19-2675; Rev 1; 1/03
16-Bit, 135ksps, Single-Supply ADCs with
Bipolar Analog Input Range
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. AutoShutdown™
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
-40°C to +85°C extended temperature range and the
0°C to +70°C commercial temperature range.
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)
5µA AutoShutdown Mode
o
Small Footprint
28-Pin TSSOP Package
Features
o
Analog Input Voltage Range: ±10V, ±5V, or 0 to 10V
MAX1179/MAX1187/MAX1189
Pin Configuration
TOP VIEW
D8 1
D9 2
D10 3
D11 4
D12 5
D13 6
28 D7
27 D6
26 D5
25 D4
24 D3
Applications
Temperature Sensing and Monitoring
Industrial Process Control
I/O Modules
Data-Acquisition Systems
Precision Instrumentation
D14 7
D15 8
R/C 9
EOC 10
AV
DD
11
AGND 12
AIN 13
AGND 14
MAX1179
MAX1187
MAX1189
23 D2
22 D1
21 D0
20 DV
DD
19 DGND
18 CS
17 RESET
16 REF
15 REFADJ
TSSOP
AutoShutdown is a trademark of Maxim Integrated Products, Inc.
Ordering Information
PART
MAX1179ACUI
MAX1179BCUI
TEMP RANGE
0°C to +70°C
0°C to +70°C
PIN-PACKAGE
28 TSSOP
28 TSSOP
INPUT VOLTAGE
RANGE
±5V
±5V
INL (LSB)
±2
±2
Ordering Information continued at end of data sheet.
________________________________________________________________
Maxim Integrated Products
1
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.
16-Bit, 135ksps, Single-Supply ADCs with
Bipolar Analog Input Range
MAX1179/MAX1187/MAX1189
ABSOLUTE MAXIMUM RATINGS
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
= +70°C)
28-Pin TSSOP (derate 12.8mW/°C above +70°C) .....1026mW
Operating Temperature Range
MAX11_ _ _CUI ...................................................0°C to +70°C
MAX11_ _ _EUI ................................................-40°C to +85°C
Storage Temperature Range .............................-65°C to +150°C
Junction Temperature ......................................................+150°C
Lead Temperature (soldering, 10s) .................................+300°C
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.
ELECTRICAL CHARACTERISTICS
(AV
DD
= DV
DD
= +5V ±5%, external reference = +4.096V, C
REF
= 10µF, C
REFADJ
= 0.1µF, V
REFADJ
= AV
DD
, T
A
= T
MIN
to T
MAX
,
unless otherwise noted. Typical values are at T
A
= +25°C.)
PARAMETER
DC ACCURACY
Resolution
Differential Nonlinearity
RES
MAX11_ _A
DNL
No missing codes
over temperature
MAX11_ _A
Integral Nonlinearity
INL
MAX11_ _B
MAX11_ _C
Transition Noise
Offset Error
Gain Error
Offset Drift
Gain Drift
AC ACCURACY (f
IN
= 1kHz, V
AIN
= full range, 135ksps)
Signal-to-Noise Plus Distortion
Signal-to-Noise Ratio
Total Harmonic Distortion
Spurious-Free Dynamic Range
ANALOG INPUT
MAX1179
Input Range
V
AIN
MAX1187
MAX1189
MAX1179/MAX1187
MAX1179
Input Resistance
R
AIN
MAX1177
MAX1189
Normal operation
Shutdown mode
Shutdown mode
Normal operation
Shutdown mode
-5
0
-10
5.3
3
5.3
7.8
6
10
13.0
kΩ
6.9
+5
+10
+10
9.2
V
SINAD
SNR
THD
SFDR
92
86
87
90
91
-100
103
-92
dB
dB
dB
dB
RMS noise, external reference
Internal reference
-10
MAX11_ _B
MAX11_ _C
16
-1
-1.0
-1
-2
-2
-4
0.6
0.75
0
0
16
±1
+10
±0.2
+1
+1.5
+2
+2
+2
+4
LSB
RMS
mV
%FSR
µV/°C
ppm/°C
LSB
LSB
Bits
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
2
_______________________________________________________________________________________
16-Bit, 135ksps, Single-Supply ADCs with
Bipolar Analog Input Range
ELECTRICAL CHARACTERISTICS (continued)
(AV
DD
= DV
DD
= +5V ±5%, external reference = +4.096V, C
REF
= 10µF, C
REFADJ
= 0.1µF, V
REFADJ
= AV
DD
, T
A
= T
MIN
to T
MAX
,
unless otherwise noted. Typical values are at T
A
= +25°C.)
PARAMETER
SYMBOL
CONDITIONS
MAX1179,
-5V
≤
V
AIN
≤
+5V
Input Current
I
AIN
MAX1187,
0
≤
V
AIN
≤
+10V
MAX1189,
-10V
≤
V
AIN
≤
+10V
Normal operation
Shutdown mode
Normal/shutdown
mode
Normal operation
Shutdown mode
MIN
-1.8
-1.8
-0.1
-1.8
-1.8
1
0.5
10
4.056
4.096
±35
I
REF-(SC)
±10
4.136
TYP
MAX
+0.4
+1.8
+2.0
+1.2
+1.8
1.4
mA
MAX1189, V
AIN
= +10V, shutdown mode to
operating mode
0.7
pF
V
ppm/°C
mA
mA
UNITS
MAX1179/MAX1187/MAX1189
MAX1179, V
AIN
= +5V, shutdown mode to
operating mode
Input Current Step at Power-Up
I
PU
Input Capacitance
INTERNAL REFERENCE
REF Output Voltage
REF Output Tempco
REF Short-Circuit Current
EXTERNAL REFERENCE
REF and REFADJ Input Voltage
Range
REFADJ Buffer Disable Threshold
REF Input Current
REFADJ Input Current
DIGITAL INPUTS/OUTPUTS
Output High Voltage
Output Low Voltage
Input High Voltage
Input Low Voltage
Input Leakage Current
Input Hysteresis
Input Capacitance
Three-State Output Leakage
Three-State Output Capacitance
C
IN
V
REF
3.8
AV
DD
-
0.4
I
REF
I
REFADJ
Normal mode, f
SAMPLE
= 135ksps
Shutdown mode (Note 1)
REFADJ = AV
DD
I
SOURCE
= 0.5mA, DV
DD
= +2.7V to +5.25V, DV
DD
-
AV
DD
= +5.25V
0.4
I
SINK
= 1.6mA, DV
DD
= +2.7V to +5.25V,
AV
DD
= +5.25V
0.7
×
DV
DD
60
±0.1
16
4.2
AV
DD
-
0.1
100
±10
V
V
µA
µA
V
OH
V
OL
V
IH
V
IL
V
0.4
V
V
0.3
×
DV
DD
V
µA
V
pF
±10
15
µA
pF
Digital input = DV
DD
or 0V
V
HYST
C
IN
I
OZ
C
OZ
-1
0.2
15
+1
_______________________________________________________________________________________
3
16-Bit, 135ksps, Single-Supply ADCs with
Bipolar Analog Input Range
MAX1179/MAX1187/MAX1189
ELECTRICAL CHARACTERISTICS (continued)
(AV
DD
= DV
DD
= +5V ±5%, external reference = +4.096V, C
REF
= 10µF, C
REFADJ
= 0.1µF, V
REFADJ
= AV
DD
, T
A
= T
MIN
to T
MAX
,
unless otherwise noted. Typical values are at T
A
= +25°C.)
PARAMETER
POWER SUPPLIES
Analog Supply Voltage
Digital Supply Voltage
AV
DD
DV
DD
External reference,
135ksps
Analog Supply Current
I
AVDD
Internal reference,
135ksps
MAX1187
MAX1179/MAX1189
MAX1187
MAX1179/MAX1189
5.2
0.5
3.7
0.75
AV
DD
= DV
DD
= +4.75V to +5.25V
3.5
4.0
4.75
2.70
5.25
5.25
2.9
5.3
3.8
6.2
5
µA
mA
mA
LSB
mA
V
V
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
Shutdown Supply Current
Digital Supply Current
Power-Supply Rejection
I
SHDN
I
DVDD
Shutdown mode, I
AVDD
+ I
DVDD
(Note 1),
digital input = DV
DD
or 0V
Standby mode
TIMING CHARACTERISTICS (Figures 1 and 2)
(AV
DD
= +5V ±5V, DV
DD
= +2.7V to AV
DD
, external reference = +4.096V, C
REF
= 10µF, C
REFADJ
= 0.1µF, V
REFADJ
= AV
DD
, C
LOAD
= 20pF, TA = T
MIN
to T
MAX
.)
PARAMETER
Maximum Sampling Rate
Acquisition Time
Conversion Time
CS
Pulse Width High
CS
Pulse Width Low
R/C to
CS
Fall Setup Time
R/C to
CS
Fall Hold Time
CS
to Output Data Valid
EOC
Fall to
CS
Fall
CS
Rise to
EOC
Rise
Bus Relinquish Time
SYMBOL
f
SAMPLE(MAX)
t
ACQ
t
CONV
t
CSH
t
CSL
t
DS
t
DH
t
DO
t
DV
t
EOC
t
BR
DV
DD
= +4.75V to +5.25V
DV
DD
= +2.7V to +5.25V
DV
DD
= +4.75V to +5.25V
DV
DD
= +2.7V to +5.25V
DV
DD
= +4.75V to +5.25V
DV
DD
= +2.7V to +5.25V
DV
DD
= +4.75V to +5.25V
DV
DD
= +2.7V to +5.25V
0
40
80
40
80
(Note 2)
(Note 2)
DV
DD
= +4.75V to +5.25V
DV
DD
= +2.7V to +5.25V
40
40
60
0
40
60
40
80
2
4.7
CONDITIONS
MIN
TYP
MAX
135
UNITS
ksps
µs
µs
ns
ns
ns
ns
ns
ns
ns
ns
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.
4
_______________________________________________________________________________________
16-Bit, 135ksps, Single-Supply ADCs with
Bipolar Analog Input Range
MAX1179/MAX1187/MAX1189
Typical Operating Characteristics
(AV
DD
= DV
DD
= +5V, external reference = +4.096V, C
REF
= 10µF, C
REFADJ
= 0.1µF, V
REFADJ
= AV
DD
, C
LOAD
= 20pF, T
A
= T
MIN
to
T
MAX
, unless otherwise noted. Typical values are at T
A
= +25°C.) (Typical
Application Circuit)
INL vs. CODE
MAX1179/87/89 toc01
DNL vs. CODE
2.0
1.5
1.0
DNL (LSB)
0.5
0
-0.5
-1.0
-1.5
-2.0
-2.5
4.45
4.40
0
10000 20000 30000 40000 50000 60000
CODE
-40
MAX1179/87/89 toc02
SUPPLY CURRENT (AV
DD
+ DV
DD
)
vs. TEMPERATURE
4.75
SUPPLY CURRENT (mA)
4.70
4.65
4.60
4.55
4.50
f
SAMPLE
= 135ksps
SHUTDOWN MODE BETWEEN
CONVERSIONS
-20
0
20
40
60
80
4.75V
5.0V
MAX1179/87/89 toc03
2.5
2.0
1.5
1.0
INL (LSB)
0.5
0
-0.5
-1.0
-1.5
-2.0
-2.5
0
10000 20000 30000 40000 50000 60000
CODE
2.5
4.80
5.25V
TEMPERATURE (°C)
SUPPLY CURRENT (AV
DD
+ DV
DD
)
vs. SAMPLE RATE
MAX1179/87/89 toc04
SHUTDOWN CURRENT (AV
DD
+ DV
DD
)
vs. TEMPERATURE
MAX1179/87/89 toc05
OFFSET ERROR vs. TEMPERATURE
8
6
OFFSET ERROR (mV)
4
2
0
-2
-4
-6
-8
-10
MAX1189
MAX1179/87/89 toc06
10
STANDBY MODE
5.0
SHUTDOWN SUPPLY CURRENT (µA)
4.5
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
NO CONVERSIONS
10
1
SUPPLY CURRENT (mA)
0.1
SHUTDOWN MODE
0.01
0.001
0.0001
0.01
0.1
1
10
100
1000
SAMPLE RATE (ksps)
0
-40
-20
0
20
40
60
80
TEMPERATURE (°C)
-40
-20
0
20
40
60
80
TEMPERATURE (°C)
GAIN ERROR
vs. TEMPERATURE
MAX1179/87/89 toc07
INTERNAL REFERENCE
vs. TEMPERATURE
MAX1179/87/89 toc08
FFT AT 1kHz
f
SAMPLE
= 135ksps
-20
-40
MAGNITUDE (dB)
-60
-80
-100
-120
-140
-160
-180
MAX 1179/87/89 toc09
0.20
0.15
GAIN ERROR (%FSR)
0.10
0.05
0
-0.05
-0.10
-0.15
-0.20
-40
-20
0
20
40
60
80
TEMPERATURE (°C)
4.136
4.126
INTERNAL REFERENCE (V)
4.116
4.106
4.096
4.086
4.076
4.066
4.056
-40
-20
0
20
40
60
80
TEMPERATURE (°C)
0
0
20
40
60
FREQUENCY (kHz)
_______________________________________________________________________________________
5
ARM技术
京公网安备 11010802033920号
Copyright © 2005-2026 EEWORLD.com.cn, Inc. All rights reserved
电子工程世界
