MAX1179/MAX1187/MAX1189
16-Bit, 135ksps, Single-Supply ADCs with
Bipolar Analog Input Range
________________________________________________________________ Maxim Integrated Products
1
19-2675; Rev 1; 1/03
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim's website at www.maxim-ic.com.
General Description
The MAX1179/MAX1187/MAX1189 16-bit, low-power,
successive-approximation analog-to-digital converters
(ADCs) feature automatic power-down, a factory-
trimmed internal clock, and a 16-bit wide parallel inter-
face. The devices operate from a single +4.75V to
+5.25V analog supply and feature a separate digital
supply input for direct interface with +2.7V to +5.25V
digital logic.
The MAX1179 accepts a bipolar input voltage range of
5V. The MAX1187 accepts an analog input voltage
range from 0 to +10V, while the MAX1189 accepts a
bipolar analog input voltage range of 10V. All devices
consume only 23mW at a sampling rate of 135ksps
when using an external reference and 29mW when
using the internal +4.096V reference. AutoShutdownTM
reduces supply current to 0.4mA at 10ksps. The
MAX1179/MAX1187/MAX1189 are ideal for high-perfor-
mance, battery-powered data-acquisition applications.
Excellent AC performance (THD = -100dB) and DC
accuracy (2LSB INL) make the MAX1179/MAX1187/
MAX1189 ideal for industrial process control, instrumen-
tation, and medical applications.
The MAX1179/MAX1187/MAX1189 are available in a
28-pin TSSOP package and are fully specified over the
-40C to +85C extended temperature range and the
0C to +70C commercial temperature range.
Applications
Temperature Sensing and Monitoring
Industrial Process Control
I/O Modules
Data-Acquisition Systems
Precision Instrumentation
Features
o Analog Input Voltage Range: 10V, 5V, or 0 to 10V
o 16-Bit Wide Parallel Interface
o Single +4.75V to +5.25V Analog Supply Voltage
o Interfaces with +2.7V to +5.25V Digital Logic
o 2LSB INL (max)
o 1LSB DNL (max)
o Low Supply Current (MAX1189)
5.3mA (External Reference)
6.2mA (Internal Reference)
5A AutoShutdown Mode
o Small Footprint
28-Pin TSSOP Package
Ordering Information
PART
TEMP RANGE
PIN-PACKAGE
INPUT VOLTAGE
RANGE
INL (LSB)
MAX1179ACUI
0C to +70C
28 TSSOP
5V
2
MAX1179BCUI
0C to +70C
28 TSSOP
5V
2
28
27
26
25
24
23
22
21
20
19
18
17
16
15
1
2
3
4
5
6
7
8
9
10
11
12
13
14
D5
D4
D7
D6
D3
D2
D1
REFADJ
D0
DV
DD
DGND
RESET
REF
AGND
AIN
AGND
AV
DD
D15
D14
D13
D12
D11
D10
D9
D8
TSSOP
TOP VIEW
MAX1179
MAX1187
MAX1189
R/C
EOC
CS
Pin Configuration
AutoShutdown is a trademark of Maxim Integrated Products, Inc.
Ordering Information continued at end of data sheet.
MAX1179/MAX1187/MAX1189
16-Bit, 135ksps, Single-Supply ADCs with
Bipolar Analog Input Range
2
_______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
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.
AV
DD
to AGND .........................................................-0.3V to +6V
DV
DD
to DGND.........................................................-0.3V to +6V
AGND to DGND.....................................................-0.3V to +0.3V
AIN to AGND .....................................................-16.5V to +16.5V
REF, REFADJ to AGND............................-0.3V to (AV
DD
+ 0.3V)
CS, R/C, RESET to DGND ........................................-0.3V to +6V
D_, EOC to DGND ...................................-0.3V to (DV
DD
+ 0.3V)
Maximum Continuous Current Into Any Pin ........................50mA
Continuous Power Dissipation (T
A
= +70C)
28-Pin TSSOP (derate 12.8mW/C above +70C) .....1026mW
Operating Temperature Range
MAX11_ _ _CUI ...................................................0C to +70C
MAX11_ _ _EUI ................................................-40C to +85C
Storage Temperature Range .............................-65C to +150C
Junction Temperature ......................................................+150C
Lead Temperature (soldering, 10s) .................................+300C
ELECTRICAL CHARACTERISTICS
(AV
DD
= DV
DD
= +5V 5%, external reference = +4.096V, C
REF
= 10F, C
REFADJ
= 0.1F, V
REFADJ
= AV
DD
, T
A
= T
MIN
to T
MAX
,
unless otherwise noted. Typical values are at T
A
= +25C.)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
DC ACCURACY
Resolution
RES
16
Bits
MAX11_ _A
-1
+1
MAX11_ _B
-1.0
+1.5
Differential Nonlinearity
DNL
No missing codes
over temperature
MAX11_ _C
-1
+2
LSB
MAX11_ _A
-2
+2
MAX11_ _B
-2
+2
Integral Nonlinearity
INL
MAX11_ _C
-4
+4
LSB
RMS noise, external reference
0.6
Transition Noise
Internal reference
0.75
LSB
RMS
Offset Error
-10
0
+10
mV
Gain Error
0
0.2
%FSR
Offset Drift
16
V/C
Gain Drift
1
ppm/C
AC ACCURACY (f
IN
= 1kHz, V
AIN
= full range, 135ksps)
Signal-to-Noise Plus Distortion
SINAD
86
90
dB
Signal-to-Noise Ratio
SNR
87
91
dB
Total Harmonic Distortion
THD
-100
-92
dB
Spurious-Free Dynamic Range
SFDR
92
103
dB
ANALOG INPUT
MAX1179
-5
+5
MAX1187
0
+10
Input Range
V
AIN
MAX1189
-10
+10
V
MAX1179/MAX1187
Normal operation
5.3
6.9
9.2
MAX1179
Shutdown mode
3
MAX1177
Shutdown mode
5.3
Normal operation
7.8
10
13.0
Input Resistance
R
AIN
MAX1189
Shutdown mode
6
k
MAX1179/MAX1187/MAX1189
16-Bit, 135ksps, Single-Supply ADCs with
Bipolar Analog Input Range
_______________________________________________________________________________________
3
ELECTRICAL CHARACTERISTICS (continued)
(AV
DD
= DV
DD
= +5V 5%, external reference = +4.096V, C
REF
= 10F, C
REFADJ
= 0.1F, V
REFADJ
= AV
DD
, T
A
= T
MIN
to T
MAX
,
unless otherwise noted. Typical values are at T
A
= +25C.)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
Normal operation
-1.8
+0.4
MAX1179,
-5V
V
AIN
+5V
Shutdown mode
-1.8
+1.8
MAX1187,
0
V
AIN
+10V
Normal/shutdown
mode
-0.1
+2.0
Normal operation
-1.8
+1.2
Input Current
I
AIN
MAX1189,
-10V
V
AIN
+10V
Shutdown mode
-1.8
+1.8
mA
MAX1179, V
AIN
= +5V, shutdown mode to
operating mode
1
1.4
Input Current Step at Power-Up
I
PU
MAX1189, V
AIN
= +10V, shutdown mode to
operating mode
0.5
0.7
mA
Input Capacitance
C
IN
10
pF
INTERNAL REFERENCE
REF Output Voltage
V
REF
4.056
4.096
4.136
V
REF Output Tempco
35
ppm/C
REF Short-Circuit Current
I
REF-(SC)
10
mA
EXTERNAL REFERENCE
REF and REFADJ Input Voltage
Range
3.8
4.2
V
REFADJ Buffer Disable Threshold
AV
DD
-
0.4
AV
DD
-
0.1
V
Normal mode, f
SAMPLE
= 135ksps
60
100
REF Input Current
I
REF
Shutdown mode (Note 1)
0.1
10
A
REFADJ Input Current
I
REFADJ
REFADJ = AV
DD
16
A
DIGITAL INPUTS/OUTPUTS
Output High Voltage
V
OH
I
SOURCE
= 0.5mA, DV
DD
= +2.7V to +5.25V,
AV
DD
= +5.25V
DV
DD
-
0.4
V
Output Low Voltage
V
OL
I
SINK
= 1.6mA, DV
DD
= +2.7V to +5.25V,
AV
DD
= +5.25V
0.4
V
Input High Voltage
V
IH
0.7
DV
DD
V
Input Low Voltage
V
IL
0.3
DV
DD
V
Input Leakage Current
Digital input = DV
DD
or 0V
-1
+1
A
Input Hysteresis
V
HYST
0.2
V
Input Capacitance
C
IN
15
pF
Three-State Output Leakage
I
OZ
10
A
Three-State Output Capacitance
C
OZ
15
pF
MAX1179/MAX1187/MAX1189
16-Bit, 135ksps, Single-Supply ADCs with
Bipolar Analog Input Range
4
_______________________________________________________________________________________
Note 1: Maximum specification is limited by automated test equipment.
Note 2: To ensure best performance, finish reading the data and wait t
BR
before starting a new acquisition.
ELECTRICAL CHARACTERISTICS (continued)
(AV
DD
= DV
DD
= +5V 5%, external reference = +4.096V, C
REF
= 10F, C
REFADJ
= 0.1F, V
REFADJ
= AV
DD
, T
A
= T
MIN
to T
MAX
,
unless otherwise noted. Typical values are at T
A
= +25C.)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
POWER SUPPLIES
Analog Supply Voltage
AV
DD
4.75
5.25
V
Digital Supply Voltage
DV
DD
2.70
5.25
V
MAX1187
2.9
External reference,
135ksps
MAX1179/MAX1189
4.0
5.3
MAX1187
3.8
Analog Supply Current
I
AVDD
Internal reference,
135ksps
MAX1179/MAX1189
5.2
6.2
mA
Shutdown mode, I
AVDD
+ I
DVDD
(Note 1),
digital input = DV
DD
or 0V
0.5
5
A
Shutdown Supply Current
I
SHDN
Standby mode
3.7
mA
Digital Supply Current
I
DVDD
0.75
mA
Power-Supply Rejection
AV
DD
= DV
DD
= +4.75V to +5.25V
3.5
LSB
TIMING CHARACTERISTICS (Figures 1 and 2)
(AV
DD
= +5V 5V, DV
DD
= +2.7V to AV
DD
, external reference = +4.096V, C
REF
= 10F, C
REFADJ
= 0.1F, V
REFADJ
= AV
DD
, C
LOAD
= 20pF, TA = T
MIN
to T
MAX
.)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
Maximum Sampling Rate
f
S AM P LE ( M A X )
135
ksps
Acquisition Time
t
ACQ
2
s
Conversion Time
t
CONV
4.7
s
CS Pulse Width High
t
CSH
(Note 2)
40
ns
DV
DD
= +4.75V to +5.25V
40
CS Pulse Width Low
t
CSL
(Note 2)
DV
DD
= +2.7V to +5.25V
60
ns
R/C to CS Fall Setup Time
t
DS
0
ns
DV
DD
= +4.75V to +5.25V
40
R/C to CS Fall Hold Time
t
DH
DV
DD
= +2.7V to +5.25V
60
ns
DV
DD
= +4.75V to +5.25V
40
CS to Output Data Valid
t
DO
DV
DD
= +2.7V to +5.25V
80
ns
EOC Fall to CS Fall
t
DV
0
ns
DV
DD
= +4.75V to +5.25V
40
CS Rise to EOC Rise
t
EOC
DV
DD
= +2.7V to +5.25V
80
ns
DV
DD
= +4.75V to +5.25V
40
Bus Relinquish Time
t
BR
DV
DD
= +2.7V to +5.25V
80
ns
MAX1179/MAX1187/MAX1189
16-Bit, 135ksps, Single-Supply ADCs with
Bipolar Analog Input Range
_______________________________________________________________________________________
5
INL vs. CODE
MAX1179/87/89 toc01
CODE
INL (LSB)
60000
20000
10000
30000
50000
40000
-2.0
-1.5
-1.0
-0.5
0
0.5
1.0
1.5
2.0
2.5
-2.5
0
DNL vs. CODE
MAX1179/87/89 toc02
CODE
DNL (LSB)
-2.0
-1.5
-1.0
-0.5
0
0.5
1.0
1.5
2.0
2.5
-2.5
60000
20000
10000
30000
50000
40000
0
SUPPLY CURRENT (AV
DD
+ DV
DD
)
vs. TEMPERATURE
MAX1179/87/89 toc03
TEMPERATURE (
C)
SUPPLY CURRENT (mA)
60
40
-20
0
20
4.45
4.50
4.55
4.60
4.65
4.70
4.75
4.80
4.40
-40
80
5.25V
5.0V
4.75V
f
SAMPLE
= 135ksps
SHUTDOWN MODE BETWEEN
CONVERSIONS
SUPPLY CURRENT (AV
DD
+ DV
DD
)
vs. SAMPLE RATE
MAX1179/87/89 toc04
SAMPLE RATE (ksps)
SUPPLY CURRENT (mA)
100
10
1
0.1
0.001
0.01
0.1
1
10
0.0001
0.01
1000
STANDBY MODE
SHUTDOWN MODE
-0.20
-0.10
-0.15
0
-0.05
0.15
0.10
0.05
0.20
-40
0
-20
20
40
60
80
GAIN ERROR
vs. TEMPERATURE
MAX1179/87/89 toc07
TEMPERATURE (
C)
GAIN ERROR (%FSR)
SHUTDOWN CURRENT (AV
DD
+ DV
DD
)
vs. TEMPERATURE
MAX1179/87/89 toc05
TEMPERATURE (
C)
SHUTDOWN SUPPLY CURRENT (
A)
60
40
-20
0
20
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.5
4.0
5.0
0
-40
80
NO CONVERSIONS
OFFSET ERROR vs. TEMPERATURE
MAX1179/87/89 toc06
TEMPERATURE (
C)
OFFSET ERROR (mV)
60
40
-20
0
20
-8
-6
-4
-2
0
2
4
8
6
10
-10
-40
80
MAX1189
4.056
4.076
4.066
4.096
4.086
4.126
4.116
4.106
4.136
-40
0
-20
20
40
60
80
INTERNAL REFERENCE
vs. TEMPERATURE
MAX1179/87/89 toc08
TEMPERATURE (
C)
INTERNAL REFERENCE (V)
FFT AT 1kHz
MAX
1179/87/89 toc09
FREQUENCY (kHz)
MAGNITUDE (dB)
40
20
-160
-140
-120
-100
-80
-60
-40
-20
0
-180
0
60
f
SAMPLE
= 135ksps
Typical Operating Characteristics
(AV
DD
= DV
DD
= +5V, external reference = +4.096V, C
REF
= 10F, C
REFADJ
= 0.1F, V
REFADJ
= AV
DD
, C
LOAD
= 20pF, T
A
= T
MIN
to
T
MAX
, unless otherwise noted. Typical values are at T
A
= +25C.) (Typical Application Circuit)
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