General Description
The MAX541/MAX542 are serial-input, voltage-output,
16-bit digital-to-analog converters (DACs) that operate
from a single +5V supply. They provide 16-bit perfor-
mance (1LSB INL and DNL) over temperature without
any adjustments. The DAC output is unbuffered, result-
ing in a low supply current of 0.3mA and a low offset
error of 1LSB.
The DAC output range is 0V to V
REF
. For bipolar opera-
tion, matched scaling resistors are provided in the
MAX542 for use with an external precision op amp
(such as the MAX400), generating a V
REF
output
swing. The MAX542 also includes Kelvin-sense con-
nections for the reference and analog ground pins to
reduce layout sensitivity.
A 16-bit serial word is used to load data into the DAC
latch. The 10MHz, 3-wire serial interface is compatible
with SPITM/QSPITM/MICROWIRETM, and it also interfaces
directly with optocouplers for applications requiring isola-
tion. A power-on reset circuit clears the DAC output to 0V
(unipolar mode) when power is initially applied.
The MAX541 is available in 8-pin plastic DIP and SO
packages. The MAX542 is available in 14-pin plastic
DIP and SO packages.
Applications
High-Resolution Offset and Gain Adjustment
Industrial Process Control
Automated Test Equipment
Data-Acquisition Systems
Features
o Full 16-Bit Performance Without Adjustments
o +5V Single-Supply Operation
o Low Power: 1.5mW
o 1s Settling Time
o Unbuffered Voltage Output Directly Drives 60k
Loads
o SPI/QSPI/MICROWIRE-Compatible Serial Interface
o Power-On Reset Circuit Clears DAC Output to 0V
(unipolar mode)
o Schmitt Trigger Inputs for Direct Optocoupler
Interface
MAX541/MAX542
+5V, Serial-Input, Voltage-Output, 16-Bit DACs
________________________________________________________________ Maxim Integrated Products
1
14
13
12
11
10
9
8
1
2
3
4
5
6
7
V
DD
INV
DGND
LDAC
AGNDS
AGNDF
OUT
RFB
TOP VIEW
MAX542
DIN
N.C.
SCLK
CS
REFF
REFS
DIP/SO
DIN
REF
SCLK
CS
1
2
8
7
V
DD
DGND
AGND
OUT
MAX541
3
4
6
5
DIP/SO
General Description
16-BIT DAC
16-BIT DATA LATCH
SERIAL INPUT REGISTER
CONTROL
LOGIC
MAX542
REFF
REFS
CS
LDAC
DIN
SCLK
AGNDS
AGNDF
OUT
INV
RFB
V
DD
DGND
R
FB
R
INV
Functional Diagrams
19-1082; Rev 2; 12/99
PART
MAX541ACPA
MAX541BCPA
MAX541ACSA
0C to +70C
0C to +70C
0C to +70C
TEMP. RANGE
PIN-PACKAGE
8 Plastic DIP
8 Plastic DIP
8 SO
Ordering Information
For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800.
For small orders, phone 1-800-835-8769.
SPI and QSPI are trademarks of Motorola, Inc.
MICROWIRE is a trademark of National Semiconductor Corp.
MAX541BCSA
0C to +70C
8 SO
INL
(LSB)
1
2
1
2
Ordering Information continued at end of data sheet.
MAX541CCPA
0C to +70C
8 Plastic DIP
4
MAX541CCSA
0C to +70C
8 SO
4
Functional Diagrams continued at end of data sheet.
MAX541/MAX542
+5V, Serial-Input, Voltage-Output, 16-Bit DACs
2
_______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS
(V
DD
= +5V 5%, V
REF
= +2.5V, AGND = DGND = 0, T
A
= T
MIN
to T
MAX
, unless otherwise noted.)
Stresses beyond those listed under "Absolute Maximum Ratings" may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
V
DD
to DGND ...........................................................-0.3V to +6V
CS, SCLK, DIN, LDAC to DGND ..............................-0.3V to +6V
REF, REFF, REFS to AGND ........................-0.3V to (V
DD
+ 0.3V)
AGND, AGNDF, AGNDS to DGND........................-0.3V to +0.3V
OUT, INV to AGND, DGND ......................................-0.3V to V
DD
RFB to AGND, DGND..................................................-6V to +6V
Maximum Current into Any Pin............................................50mA
Continuous Power Dissipation (T
A
= +70C)
8-Pin Plastic DIP (derate 9.09mW/C above +70C) .....727mW
8-Pin SO (derate 5.88mW/C above +70C) .................471mW
14-Pin Plastic DIP (derate 10.00mW/C above +70C) ...800mW
14-Pin SO (derate 8.33mW/C above +70C) ...............667mW
14-Pin Ceramic SB (derate 10.00mW/C above +70C ..800mW
Operating Temperature Ranges
MAX541 _C_ A/MAX542_C_D. .............................0C to +70C
MAX541 _E_ A/MAX542_E_D............................-40C to +85C
MAX542CMJD .................................................-55C to +125C
Storage Temperature Range .............................-65C to +150C
Lead Temperature (soldering, 10s) .................................+300C
MAX542, bipolar mode
Unipolar mode
(Note 3)
4.75V
V
DD
5.25V
MAX542
T
A
= T
MIN
to T
MAX
T
A
= +25C
Ratio error
T
A
= +25C
T
A
= T
MIN
to T
MAX
V
DD
= 5V
T
A
= +25C
R
FB
/R
INV
T
A
= T
MIN
to T
MAX
(Note 2)
CONDITIONS
k
9.0
R
REF
Reference Input Resistance
(Note 4)
11.5
V
2.0
3.0
V
REF
Reference Input Range
PSR
Power-Supply Rejection
LSB
1.0
ppm/C
0.5
BZS
TC
Bipolar Zero Tempco
LSB
10
0.015
Bipolar Resistor Matching
1.0
R
OUT
DAC Output Resistance
k
6.25
0.5
1.0
Bits
16
N
Resolution
ppm/C
0.1
Gain-Error Tempco
LSB
10
Gain Error (Note 1)
5
ppm/C
0.05
ZS
TC
Zero-Code Tempco
LSB
0.5
2.0
INL
Integral Nonlinearity
0.5
4.0
1
2
Zero-Code Offset Error
UNITS
MIN
TYP
MAX
SYMBOL
PARAMETER
ZSE
LSB
MAX54_A
MAX54_B
T
A
= T
MIN
to T
MAX
20
Bipolar Zero Offset Error
C
L
= 10pF (Note 5)
25
V/s
SR
Voltage-Output Slew Rate
DYNAMIC PERFORMANCE--ANALOG SECTION (R
L
=
, unipolar mode)
to
1
/
2
LSB of FS, C
L
= 10pF
1
s
Output Settling Time
Guaranteed monotonic
LSB
0.5
1.0
DNL
Differential Nonlinearity
MAX54_C
STATIC PERFORMANCE--ANALOG SECTION (R
L
=
)
REFERENCE INPUT
MAX542
MAX542
%
MAX541/MAX542
+5V, Serial-Input, Voltage-Output, 16-Bit DACs
_______________________________________________________________________________________
3
ELECTRICAL CHARACTERISTICS (continued)
(V
DD
= +5V 5%, V
REF
= +2.5V, AGND = DGND = 0, T
A
= T
MIN
to T
MAX
, unless otherwise noted.)
TIMING CHARACTERISTICS
(V
DD
= +5V 5%, V
REF
= +2.5V, AGND = DGND = 0, CMOS inputs, T
A
= T
MIN
to T
MAX
, unless otherwise noted.)
Note 1: Gain Error tested at V
REF
= 2.0V, 2.5V, and 3.0V.
Note 2: R
OUT
tolerance is typically 20%.
Note 3: Min/max range guaranteed by gain-error test. Operation outside min/max limits will result in degraded performance.
Note 4: Reference input resistance is code dependent, minimum at 8555 hex.
Note 5: Slew-rate value is measured from 0% to 63%.
Note 6: Guaranteed by design. Not production tested.
Code = 0000 hex; CS = V
DD;
LDAC = 0;
SCLK, DIN = 0 to V
DD
levels
Major-carry transition
V
IN
= 0
Code = 0000 hex, V
REF
= 1Vp-p at 100kHz
Code = 0000 hex
Code = FFFF hex
(Note 6)
CONDITIONS
mW
1.5
PD
Power Dissipation
mA
0.3
1.1
I
DD
Positive Supply Current
V
4.75
5.25
V
DD
Positive Supply Range
V
0.40
V
H
Hysteresis Voltage
pF
10
C
IN
Input Capacitance
mVp-p
1
nVs
10
nVs
10
DAC Glitch Impulse
Digital Feedthrough
A
1
I
IN
Input Current
V
0.8
V
IL
Input Low Voltage
V
2.4
V
IH
Input High Voltage
Reference Feedthrough
dB
92
SNR
Signal-to-Noise Ratio
75
pF
120
C
IN
Reference Input Capacitance
UNITS
MIN
TYP
MAX
SYMBOL
PARAMETER
MAX542 (Note 6)
MAX542
(Note 6)
CONDITIONS
s
20
V
DD
High to CS Low
(power-up delay)
ns
45
t
CL
SCLK Pulse Width Low
ns
45
t
CH
MHz
10
f
CLK
SCLK Frequency
SCLK Pulse Width High
ns
50
t
LDACS
CS High to LDAC Low Setup
ns
50
t
LDAC
LDAC Pulse Width
ns
0
t
DH
DIN to SCLK High Hold
ns
40
t
DS
DIN to SCLK High Setup
ns
45
t
CSS0
CS Low to SCLK High Setup
ns
45
t
CSS1
CS High to SCLK High Setup
ns
30
t
CSH0
SCLK High to CS Low Hold
ns
45
t
CSH1
SCLK High to CS High Hold
UNITS
MIN
TYP
MAX
SYMBOL
PARAMETER
Code = FFFF hex
MHz
1
BW
Reference -3dB Bandwidth
DYNAMIC PERFORMANCE--REFERENCE SECTION
STATIC PERFORMANCE--DIGITAL INPUTS
POWER SUPPLY
MAX541/MAX542
+5V, Serial-Input, Voltage-Output, 16-Bit DACs
4
_______________________________________________________________________________________
__________________________________________Typical Operating Characteristics
(V
DD
= 5V, V
REF
= +2.5V, T
A
= +25C, unless otherwise noted.)
0.50
0.45
0.40
0.35
0.30
0.25
0.20
-40
-20
0
20
40
60
80
100
MAX542-01
SUPPLY CURRENT (mA)
SUPPLY CURRENT
vs. TEMPERATURE
TEMPERATURE (C)
0.35
0.34
0.33
0.32
0.31
0.30
0.29
0.28
0
1
2
3
4
5
6
MAX542-02
SUPPLY CURRENT (mA)
SUPPLY CURRENT
vs. REFERENCE VOLTAGE
REFERENCE VOLTAGE (V)
1.0
0.6
0.2
0
-0.2
-0.6
0.8
0.4
-0.4
-0.8
-1.0
-60
-20
20
60
100
140
MAX542-03
ZERO-CODE OFFSET ERROR (LSB)
ZERO-CODE OFFSET ERROR
vs. TEMPERATURE
TEMPERATURE (C)
1.0
0.6
0.2
0
-0.2
-0.6
0.8
0.4
-0.4
-0.8
-1.0
-60
-20
20
60
100
140
MAX542-04
INL (LSB)
INTEGRAL NONLINEARITY
vs. TEMPERATURE
TEMPERATURE (C)
+INL
-INL
1.00
0.50
0.25
0.75
0
-0.25
-0.50
-0.75
-1.00
0
10k
20k
30k
40k
50k
60k
70k
MAX542-07
INL (LSB)
INTEGRAL NONLINEARITY
vs. CODE
DAC CODE
1.0
0.6
0.2
0
-0.2
-0.6
0.8
0.4
-0.4
-0.8
-1.0
-60
-20
20
60
100
140
MAX542-05
DNL (LSB)
DIFFERENTIAL NONLINEARITY
vs. TEMPERATURE
TEMPERATURE (C)
+DNL
-DNL
1.0
0.8
0.6
0.4
0.2
0
-0.2
-0.4
-0.6
-0.8
-1.0
-60
-20
20
60
100
140
MAX542-06
GAIN ERROR (LSB)
GAIN ERROR
vs. TEMPERATURE
TEMPERATURE (C)
0.25
0.75
0.50
1.00
0
-0.25
-0.50
-0.75
-1.00
0
10k
20k
30k
40k
50k
60k
70k
MAX542-08
DNL (LSB)
DIFFERENTIAL NONLINEARITY
vs. CODE
DAC CODE
200
160
120
80
40
0
0
10k
20k
30k
40k
50k
60k
70k
MAX542-09
REFERENCE CURRENT (A)
REFERENCE CURRENT
vs. CODE
DAC CODE
MAX541/MAX542
+5V, Serial-Input, Voltage-Output, 16-Bit DACs
_______________________________________________________________________________________
5
MAX542-10
FULL-SCALE STEP RESPONSE
(f
SCLK
= 10MHz)
2
s/div
OUT
500mV/div
C
L
= 10pF
R
L
=
1
s/div
MAX542-10A
FULL-SCALE STEP RESPONSE
(f
SCLK
= 20MHz)
2
s/div
OUT
500mV/div
400ns/div
C
L
= 10pF
R
L
=
MAX542-11
MAJOR-CARRY OUTPUT GLITCH
2
s/div
CS
(5V/div)
OUT
(AC-COUPLED,
100mV/div)
MAX542-12
DIGITAL FEEDTHROUGH
2
s/div
SCLK
5V/div
OUT
(AC-COUPLED,
50mV/div)
CODE = 0000 hex
Typical Operating Characteristics (continued)
(V
DD
= +5V, V
REF
= +2.5V, T
A
= +25C, unless otherwise noted.)
Pin Descriptions
+5V Supply Voltage
V
DD
8
Digital Ground
DGND
7
Serial Data Input
DIN
6
Serial Clock Input. Duty cycle must be between 40% and 60%.
SCLK
5
Chip-Select Input
CS
4
Voltage Reference Input. Connect to external +2.5V reference.
REF
3
Analog Ground
AGND
2
DAC Output Voltage
OUT
1
FUNCTION
NAME
PIN
MAX541
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