May 1997
ML6698
*
100BASE-TX Physical Layer with 5-Bit Interface
1
GENERAL DESCRIPTION
The ML6698 is a high-speed physical layer transceiver
that provides a 5-bit (or symbol) interface to unshielded
twisted pair cable media. The ML6698 is well suited for
adapter card applications using the DEC 21143, the
Macronix MX98713, or equivalent Media Access
Controllers (MACs). The ML6698 may be used in other
100BASE-TX applications requiring the 5-bit interface as
well as FDDI-over-copper applications.
The ML6698 integrates 125MHz clock recovery/
generation, receive adaptive equalization, baseline
wander correction and MLT-3/10BASE-T transmitter.
FEATURES
s
5-bit (or symbol) parallel interface
s
Compliant to IEEE 802.3u 100BASE-TX standard
s
Compliant to ANSI X3T12 TP-PMD (FDDI) standard
s
Single-jack 10BASE-T/100BASE-TX solution when used
with external 10Mbps PHY
s
125MHz receive clock recovery/generation
s
Baseline wander correction
s
Adaptive equalization and MLT-3 encoding/decoding
s
Supports full-duplex operation
*Some Packages Are End Of Life As Of August 1, 2000
BLOCK DIAGRAM
(PLCC Pin Configuration)
TXC
TPOUTP
TPOUTN
NRZ TO NRZI
AND
NRZI TO MLT-3
ENCODER
CLOCK AND DATA
RECOVERY
NRZI TO NRZ DECODER
RTSET
TSM4
10BTTXINN
TSM3
TSM2
TPINP
TPINN
CMREF
RGMSET
SDO
TSM1
TSM0
RXC
RSM4
RSM3
RSM2
RSM1
RSM0
10BTTXINP
PWRDN
LPBK
SEL100/
10
CLOCK SYTHESIZER
CONTROL LOGIC
EQUALIZER
BLW CORRECTION
MLT-3 DECODER
LOOPBACK MUX
SERIALIZER
DESERIALIZER
100BASE-TX/10BASE-T
TWISTED PAIR DRIVER
44
41
40
34
33
31
38
37
39
30
24
7
42
25
2
3
4
5
6
16
8
9
11
13
15
ML6698
2
PIN CONFIGURATION
ML6698
44-Pin PLCC (Q44)
CMREF
TPINP
TPINN
AVCC2
AGND2
TPOUTP
TPOUTN
AGND3
RTSET
RGMSET
NC
PWRDN
RSM4
RSM3
DGND1
RSM2
DVCC1
RSM1
DGND2
RSM0
RXC
DGND3
18
19
20
21
22
TSM0
TSM1
TSM2
TSM3
TSM4
AGND1
TXC
AVCC1
LPBK
10BTTXINP
10BTTXINN
DVCC2
DGND4A
DGND4B
DGND4C
DVCC5
DGND5
SDO
SEL100/
10
NC
NC
AVCC3
23
24
7
8
9
10
11
12
13
14
15
16
17
6
5
4
3
2
39
38
37
36
35
34
33
32
31
30
29
1
44
25
43
26
42
27
41
28
40
CMREF
TPINP
TPINN
AVCC2
AGND2
TPOUTP
TPOUTN
AGND3
RTSET
RGMSET
NC
PWRDN
RSM4
RSM3
DGND1
RSM2
DVCC1
RSM1
DGND2
RSM0
RXC
DGND3
12
13
14
15
16
TSM0
TSM1
TSM2
TSM3
TSM4
AGND1
TXC
AVCC1
LPBK
10BTTXINP
10BTTXINN
DVCC2
DGND4A
DGND4B
DGND4C
DVCC5
DGND5
SDO
SEL100/
10
NC
NC
AVCC3
17
18
1
2
3
4
5
6
7
8
9
10
11
44
43
42
41
40
33
32
31
30
29
28
27
26
25
24
23
39
38
19
37
20
36
21
35
22
34
ML6698
44-Pin TQFP (H44-10)
ML6698
3
PIN DESCRIPTION
(Pin numbers for TQFP package in parentheses)
PIN
NAME
DESCRIPTION
1
(39)
AGND1
Analog ground.
2-6
(40-44)
TSM<4:0>
Transmit data TTL inputs. TSM<4:0> inputs accept TX data symbols. Data
appearing at TSM<4:0> are clocked into the ML6698 on the rising edge of TXC.
7
(1)
PWRDN
Device power down input. A low signal powers down all ciruits of the ML6698, and
dissipates less than 20mA.
8,9,
(2, 3,
RSM<4:0>
Receive data TTL outputs. RSM<4:0> outputs may be sampled synchronously with
11,13, 5, 7, 9)
RXC's rising edge.
15
10
(4)
DGND1
Digital ground.
12
(6)
DVCC1
Digital +5V power supply.
14
(8)
DGND2
Digital ground.
16
(10)
RXC
Recovered receive symbol clock TTL output. This 25MHz clock is phase-aligned
with the internal 125MHz bit clock recovered from the signal received at TPINP/N
when data is present. Receive data at RSM<4:0> change on the falling edges and
should be sampled on the rising edges of this clock. RXC is phase aligned to TXC
when 100BASE-TX signal is not present at TPINP/N
17
(11)
DGND3
Digital ground.
18
(12)
DVCC2
Digital +5V power supply.
19
(13)
DGND4A
Digital ground.
20
(14)
DGND4B
Digital ground.
21
(15)
DGND4C
Digital ground.
22
(16)
DVCC5
Digital +5V power supply.
23
(17)
DGND5
Digital ground.
24
(18)
SD0
Signal detect TTL output. A high output level indicates 100BASE-TX activity at
TPINP/N with an amplitude exceeding the preset threshold. The signal detect
function is always active independent of the configuration of the SEL100/10 pin.
25
(19)
SEL100/10
Speed select TTL input. Driving this pin low disables 100BASE-TX transmit and
receive functions, and enables the 10BASE-T transmit path from 10BTTXINP/N to
TPOUTP/N. A high signal on SEL100/10 disables the 10BTTXINP/N inputs and enables
100BASE-TX operation.
28
(22)
AVCC3
Analog positive power supply.
30
(24)
RGMSET
Equalizer bias resistor input. An external 9.53k, 1% resistor connected between
RGMSET and AGND3 sets internal time constants controlling the receive equalizer
transfer function.
31
(25)
RTSET
Transmit level bias resistor input. An external 2.49k, 1% resistor connected
between RTSET and AGND3 sets a precision constant bias current for the twisted
pair transmit level.
32
(26)
AGND3
Analog ground.
33,34 (27,28)
TPOUTN/P
Transmit twisted pair outputs. This differential current output pair drives MLT-3
waveforms into the network coupling transformer in 100BASE-TX mode, and
10BASE-T or FLP waveforms in 10BASE-T mode.
35
(29)
AGND2
Analog ground.
36
(30)
AVCC2
Analog +5V power supply.
37,38 (31, 32)
TPINN/P
Receive twisted pair inputs. This differential input pair receives 100BASE-TX signals
from the network.
ML6698
4
PIN DESCRIPTION
(Continued)
PIN
NAME
DESCRIPTION
39
(33)
CMREF
Receiver common-mode reference output. This pin provides a common-mode bias
point for the twisted-pair media line receiver. A typical value for CMREF is
(VCC1.26)V.
40,41 (34,35)
10BTTXINN/P 10BASE-T transmit waveform inputs. The ML6698 presents a linear copy of the input
at 10BTTXINN/P to the TPOUTN/P outputs when the ML6698 functions in 10BASE-T
mode. Signals presented to these pins must be centered at V
CC
/2 with a single ended
amplitude of
0.25V.
42
(36)
LPBK
Loopback TTL input pin. Tying this pin to ground places the part in loopback mode;
data at RSM<4:0> are serialized, MLT-3 encoded, equalized then sent to the receive
PLL for clock recovery and sent to the RSM<4:0> outputs. Floating this pin or tying it
to V
CC
places the part in its normal mode of operation.
43
(37)
AVCC1
Analog +5V power supply.
44
(38)
TXC
Transmit clock TTL input. This 25MHz clock is the frequency reference for the
internal transmit PLL clock multiplier. This pin should be driven by an external
25MHz clock at TTL or CMOS levels.
ML6698
5
ABSOLUTE MAXIMUM RATINGS
Absolute maximum ratings are those values beyond which
the device could be permanently damaged. Absolute
maximum ratings are stress ratings only and functional
device operation is not implied.
V
CC
Supply Voltage Range ................... GND 0.3V to 6V
Input Voltage Range
Digital Inputs ....................... GND 0.3V to V
CC
+ 0.3V
TPINP, TPINN, 10BTTXINP,
10BTTXINN ..................... GND 0.3V to V
CC
+ 0.3V
Output Current
TPOUTP, TPOUTN .............................................. 60mA
All other outputs .................................................. 10mA
Junction Temperature ............................................. 150C
Storage Temperature .............................. .. 65C to 150C
Lead Temperature (Soldering, 10 sec) ..................... 260C
OPERATING CONDITIONS
V
CC
Supply Voltage ............................................ 5V 5%
All V
CC
supply pins
must be within 0.1V of each other.
All GND pins
must be within 0.1V of each other.
T
A
, Ambient temperature ................................ 0C to 70C
RGMSET ..................................................... 9.53k 1%
RTSET .......................................................... 2.49k 1%
Receive transformer insertion loss ........................ <0.5dB
DC ELECTRICAL CHARACTERISTICS
Over full range of operating conditions unless otherwise specified (Note 1)
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
TTL Inputs (TSM<4:0>, TXC, SEL100/10, PWRDN, LPBK)
V
IL
Input Low Voltage
I
IL
= 400A
0.8
V
V
IH
Input High Voltage
I
IH
= 100A
2.0
V
I
IL
Input Low Current
V
IN
= 0.4V
200
A
I
IH
Input High Current
V
IN
= 2.7V
100
A
TTL Outputs (RSM<4:0>, RXC, SDO)
V
OL
Output Low Voltage
I
OL
= 4mA
0.4
V
V
OH
Output High Voltage
I
OH
= 4mA
2.4
V
Receiver
V
ICM
TPINP/N Input Common-Mode
100 Termination across TPINP/N
V
CC
1.26
V
Voltage
V
ID
TPINP-TPINN Differential Input
3.0
3.0
V
Voltage Range
R
IDR
TPINP-TPINN Differential
10.0k
Input Resistance
I
ICM
TPINP/N Common-Mode Input
+10
A
Current
I
RGM
RGMSET Input Current
RGMSET = 9.53k
130
A
I
RT
RTSET Input Current
RTSET = 2.49k
500
A
Transmitter
I
TD100
TPOUTP/N 100BASE-TX Mode
Note 2, 3
19
21
mA
Differential Output Current
I
TD10
TPOUTP/N 10BASE-T
55
60
65
mA
Mode Differential Output Current
I
TOFF
TPOUTP/N Off-State Output
R
L
= 200, 1%
0
1.5
mA
I
TXI
TPOUTP/N Differential Output
Current Imbalance
R
L
= 200, 1%
500
A
ML6698
6
DC ELECTRICAL CHARACTERISTICS
(Continued)
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Transmitter (Continued)
X
ERR
TPOUTP/N Differential Output
V
OUT
= V
CC
; Note 3
5.0
+5.0
%
Current Error
X
CMP100
TPOUTP/N 100BASE-X Output
V
OUT
= V
CC
2.2V; referred to
Current Compliance Error
I
OUT
at V
CC
2.0
+2.0
%
V
OCM10
TPOUTP/N 10BASE-T Output
I
TD10
remains within specified
V
CC
2.7
V
CC
+ 2.7
V
Voltage Compliance Range
values
V
ICM10
10BTTXNN/P Input
V
CC
/2
0.3
V
CC
/2
+ 0.3
V
Common-Mode Voltage Range
Power Supply Current
I
CC100
Supply Current, 100BASE-TX
Current into all V
CC
pins,
195
260
mA
Operation, Transmitting
V
CC
= 5.25V (Note 2)
I
CC10
Supply Current, 10BASE-T Mode
155
175
mA
I
CCOFF
Supply Current
PWRDN
20
mA
Power Down Mode
AC ELECTRICAL CHARACTERISTICS
Over full range of operating conditions unless otherwise specified
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
t
TR/F
TPOUTP-TPOUTN Differential
Notes 5, 6; for any legal
3.0
5.0
ns
Rise/Fall Time
code sequence
t
TM
TPOUTP-TPOUTN Differential
Notes 5, 6; for any legal
0.5
0.5
ns
Rise/Fall Time Mismatch
code sequence
t
TDC
TPOUTP-TPOUTN Differential
Notes 4, 6
0.5
0.5
ns
Output Duty Cycle Distortion
t
TJT
TPOUTP-TPOUTN Differential
Note 6
300
1400
ps
Output Peak-to-Peak Jitter
X
OST
TPOUTP-TPOUTN Differential
Notes 6, 7
5
%
Output Voltage Overshoot
t
TXP
Transmit Bit Delay
Note 8
10.5
Bit Times
t
RXDC
Receive Bit Delay
Note 9
15.5
Bit Times
ML6698
7
AC ELECTRICAL CHARACTERISTICS
(Continued)
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
MII (Media-Independent Interface)
X
BTOL
TX Output Clock Frequency
25MHz frequency
100
+100
ppm
Tolerance
t
TPWH
TXC pulse width HIGH
14
ns
t
TPWL
TXC pulse width LOW
14
ns
t
RPWH
RXC pulse width HIGH
14
ns
t
RPWL
RXC pulse width LOW
14
ns
t
TPS
Setup time, TSM<4:0> Data Valid
12
ns
to TXC Rising Edge (1.4V point)
t
TPH
Hold Time, TSM<4:0> Data
3
ns
Valid After TXC Rising Edge
(1.4V point)
t
RCS
Time that RSM<4:0> Data are
10
ns
Valid Before RXC Rising Edge
(1.4V point)
t
RCH
Time that RSM<4:0> Data are
10
ns
Valid After RXC Rising Edge
(1.4V point)
t
RPCR
RXC 10% 90% Rise Time
6
ns
t
RPCF
RXC 90%-10% Fall Time
6
ns
Note 1.
Limits are guaranteed by 100% testing, sampling, or correlation with worst case test conditions.
Note 2.
Measured using the test circuit shown in Fig. 1, under the following conditions:
R
LP
= 200, R
LS
= 49.9, R
TSET
= 2.49k.
All resistors are 1% tolerance.
Note 3.
Output current amplitude is I
OUT
= 40 3 1.25V/RTSET.
Note 4.
Measured relative to ideal negative and positive signal 50% points, using the four successive MLT-3 transitions for the 01010101 bit sequence.
Note 5.
Time difference between 10% and 90% levels of the transition from the baseline voltage (nominally zero) to either the positive or negative peak signal voltage. The
times specified here correlate to the transition times defined in the ANSI X3T9.5 TP-PMD Rev 2.0 working draft, section 9.1.6, which include the effects of the
external network coupling transformer and EMI/RFI emissions filter.
Note 6.
Differential test load is shown in fig. 1 (see note 3).
Note 7.
Defined as the percentage excursion of the differential signal transition beyond its final adjusted value during the symbol interval following the transition. The
adjusted value is obtained by doing a straight line best-fit to an output waveform containing 14 bit-times of no transition preceded by a transition from zero to
either a positive or negative signal peak; the adjusted value is the point at which the straight line fit meets the rising or falling signal edge.
Note 8.
Symbol /J/ at TSM <4:0> sampled by TXC to first bit of /J/ at MDI.
Note 9.
First bit of /J/ at MDI to first rising edge of RXC after the last part of the /J/ appears at RSM <4:0>.
R
LS
49.9
R
LP
200
V
CC
R
LP
200
2:1
R
LS
49.9
TPOUTP
TPOUTN
1
2
Figure 1. Test Circuit
ML6698
8
TXC
TSM<4:0>
t
TPS
t
TPH
t
TPWH
t
TPWL
RXC
RSM<4:0>
t
RCS
t
RCM
t
TPWH
t
TPWL
t
RPCR
t
RPCF
Figure 2.
Figure 3.
ML6698
9
FUNCTIONAL DESCRIPTION
TRANSMIT SECTION
100BASE-TX Operation
The transmitter accepts scrambled 5-bit symbols clocked in
at 25MHz and outputs MLT-3 signals onto the twisted-pair
media at 100Mbps. The on-chip transmit PLL converts a
25MHz TTL-level clock at TXC to an internal 125MHz bit
clock. TXC from the ML6698 clocks scrambled transmit
symbols from the MAC into the ML6698's TSM<4:0> input
pins. Symbols from the TSM<4:0> inputs are converted
from parallel to serial form at the 125MHz clock rate. The
serial transmit data is converted to MLT-3 3-level code and
driven differentialy out of the TPOUTP and TPOUTN pins
at nominal 2V levels with the proper loads. The
transmitter is designed to drive a center-tapped transformer
with a 2:1 winding ratio, so a differential 400 ohm load is
used on the transformer primary to properly terminate the
100 ohm cable and termination on the secondary. The
transformer's center tap must be tied to V
CC
. A 2:1
transformer allows using a 20mA output current in
100BASE-TX mode. Using a 1:1 transformer would have
required twice the output current and increased the on-chip
power dissipation. An external 2.49k
W, 1% resistor at the
RTSET pin creates the correct output levels at TPOUP/N.
10BASE-T
In 10BASE-T mode, the transmitter acts as a linear buffer
with a gain of 10. 10BASE-T inputs (Manchester data and
normal link pulses) at 10BTTXINP/N appear as full-swing
signals at TPOUTP/N in this mode. Inputs to the
10BTTXINP/N pins should have a nominal 0.25V
differential amplitude and a common-mode voltage of
V
CC
/2, and should also be waveshaped or filtered to meet
the 10BASE-T harmonic content requirements. The ML6698
does not provide any 10BASE-T transmit filtering.
RECEIVE SECTION
The receiver converts 3-level MLT-3 signals from the
twisted-pair media to 5-bit scrambled symbols at
RSM<4:0> with extracted clock at RXC. The adaptive
equalizer compensates for the distortion of up to 140m of
cable and attenuates cable-induced jitter, corrects for DC
baseline wander, and converts the MLT-3 signal to 2-level
NRZ. The receive PLL extracts clock from the equalized
signal, providing additional jitter attenuation, and clocks
the signal through the serial to parallel converter. The
resulting 5-bit symbols appear at RSM<4:0>. The
extracted clock appears at RXC. Resistor RGMSET sets
internal time constants controlling the adaptive equalizer's
transfer function. RGMSET must be set to 9.53k (1%).
LOOPBACK
Tying LPBK pin low places the part in loopback mode.
Data at TXD<4:0> are serialized, MLT-3 encoded,
equalized, then sent to receive PLL for clock recovery and
sent to the RXD<4:0> outputs.
In this mode, data at TXD<4:0> has to be valid 5-bit
symbol data.
ML6698 SCHEMATIC
Figure 2 shows a general design where the 5-bit and other
control signals interface to the controller. TXC is
connected to a 25MHz, 100ppm clock oscillator.
Inductors L1 and L2 are for the purpose of improving
return loss.
Capacitor C7 is recommended. It decouples some noise at
the inputs of the ML6698 and improves the Bit Error Rate
(BER) performance of the board.
It is recommended having a 0.1F capacitor on every V
CC
pin as indicated by C3, 4, 9-12. Also, it is recommended
to split the A
VCC
and D
VCC
, AGND and DGND. It is
recommended that AGND and DGND planes are large
enough for low inductance. If splitting the two grounds
and keeping the ground planes large enough is not
possible due to board space, you could join them into one
larger ground plane.
DIFFERENCES BETWEEN THE ML6694 AND ML6698
Both parts are pin to pin compatible and perform the same
functions. The only differences are:
1. SDO: The ML6694 has SDO (Signal Detect Output)
active in 100BASE-TX mode only, while the ML6698
has it active in both 10BASE-T and 100BASE-TX
modes.
2. SEL10/100 or SEL100/10: The ML6694 has the
100BASE-TX mode active low and the 10BASE-T
mode active high (SEL10/100). The ML6698 has the
opposite polarity where the 100BASE-TX mode is
active high and the 10BASE-T mode is active low
(SEL100/10).
ML6698
10
R1
2.49k
W 1%, 1/8W Surface Mount
R2
9.53k
W 1%, 1/8W Surface Mount
R8, R9,
200
W 1%, 1/8W Surface Mount
R23
R10, R11
100
W 1%, 1/8W Surface Mount
R15-R20
49.9
W 5%, 1/8W Surface Mount
R21-R22
75
W 5%, 1/8W Surface Mount
C1, C3,
0.1F Ceramic Chip Cap
C4, C8-C12
C5, C6
10F Tantalum Cap
Figure 2. ML6698 Typical Applications Circuit
R22
AVCC
AVCC
DVCC
CMREF
TPINP
TPINN
AVCC2
AGND2
TPOUTP
TPOUTN
AGND3
RTSET
RGMSET
NC
PWRDN
RSM4
RSM3
DGND1
RSM2
DVCC1
RSM1
DGND2
RSM0
RXC
DGND3
18 19
20
21
22
TSM0
TSM1
TSM2
TSM3
TSM4
AGND1
TXC
AVCC1
LPBK
10BTTXINP
10BTTXINN
DVCC2
DGND4A
DGND4B
DGND4C
DVCC5
DGND5
SDO
SEL100/
10
NC
NC
AVCC3
23
24
7
8
9
10
11
12
13
14
15
16
17
6
5
4
3
2
39
38
37
36
35
34
33
32
31
30
29
1
44
25
43
26
42
27
41
28
40
ML6698
U1
U2
U5
1
NC
4
2
3
C1
L2
L1
R9
R8
R17
RJ45
SHIELD
GROUNDED
R18
R21
R19
R20
R16
R15
1
2
3
4
5
6
7
8
TXTP+
TXTP
RXTP+
RXTP
R2
R1
R11
R10
1:1
2:1
C2
C8
CONTROLLER INTERFACE
OUTPUTS TO A
10BASE-T PHY
INPUT FROM A CONTROLLER,
OTHERWISE FLOAT
INPUT FROM A
10BASE-T PHY
AVCC
C3
C9
C10
C6
FB1
FB2
C4
C11
C12
C5
+
+
DVCC
R23
C7
C7
10pF Cap
C2
Board Layer Cap (2kV rated)
U1
ML6698 44-PLCC Surface Mount
U2
Clock Oscillator, 25MHz 4-Pin Surface Mount
U5
Bel Transformer Module S558-1287-02,
XFMRS Inc. XF6692TX, or Valor ST6129
(not pin compatible)
FB1, FB2
Fair-Rite SM Bead P/N 2775019447
L1, L2
130nH Inductors rated at 50MHz
ML6698
11
PHYSICAL DIMENSIONS
inches (millimeters)
0.100 - 0.112
(2.54 - 2.84)
PIN 1 ID
SEATING PLANE
0.685 - 0.695
(17.40 - 17.65)
0.650 - 0.656
(16.51 - 16.66)
0.013 - 0.021
(0.33 - 0.53)
0.165 - 0.180
(4.06 - 4.57)
1
0.650 - 0.656
(16.51 - 16.66)
0.685 - 0.695
(17.40 - 17.65)
12
23
34
0.590 - 0.630
(14.99 - 16.00)
0.025 - 0.045
(0.63 - 1.14)
(RADIUS)
0.050 BSC
(1.27 BSC)
0.009 - 0.011
(0.23 - 0.28)
0.042 - 0.056
(1.07 - 1.42)
0.042 - 0.048
(1.07 - 1.22)
0.026 - 0.032
(0.66 - 0.81)
0.500 BSC
(12.70 BSC)
Package: Q44
44-Pin PLCC
0.148 - 0.156
(3.76 - 3.96)
0.048 MAX
(1.20 MAX)
SEATING PLANE
0.472 BSC
(12.00 BSC)
0.394 BSC
(10.00 BSC)
1
0.394 BSC
(10.00 BSC)
0.472 BSC
(12.00 BSC)
12
34
23
0.032 BSC
(0.80 BSC)
PIN 1 ID
0.012 - 0.018
(0.29 - 0.45)
0.037 - 0.041
(0.95 - 1.05)
0.018 - 0.030
(0.45 - 0.75)
0.003 - 0.008
(0.09 - 0.20)
0 - 8
Package: H44-10
44-Pin (10 x 10 x 1mm) TQFP
ML6698
12
Ds6698-01
2092 Concourse Drive
San Jose, CA 95131
Tel: 408/433-5200
Fax: 408/432-0295
Micro Linear reserves the right to make changes to any product herein to improve reliability, function or design.
Micro Linear does not assume any liability arising out of the application or use of any product described herein,
neither does it convey any license under its patent right nor the rights of others. The circuits contained in this
data sheet are offered as possible applications only. Micro Linear makes no warranties or representations as to
whether the illustrated circuits infringe any intellectual property rights of others, and will accept no responsibility
or liability for use of any application herein. The customer is urged to consult with appropriate legal counsel
before deciding on a particular application.
ORDERING INFORMATION
PART NUMBER
TEMPERATURE RANGE
PACKAGE
ML6698CQ (End Of Life)
0C to 70C
44-PIN PLCC (Q44)
ML6698CH
0C to 70C
44-PIN TQFP (H44-10)
Micro Linear 1997
is a registered trademark of Micro Linear Corporation
Products described in this document may be covered by one or more of the following patents, U.S.: 4,897,611; 4,964,026; 5,027,116; 5,281,862; 5,283,483; 5,418,502; 5,508,570; 5,510,727; 5,523,940;
5,546,017; 5,559,470; 5,565,761; 5,592,128; 5,594,376; Japan: 2598946; 2619299. Other patents are pending.
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