
M
14-Bit, 135ksps, Single-Supply ADCs with
Bipolar Analog Input Range
________________________________________________________________
Maxim Integrated Products
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.
1
19-2653; Rev 0; 10/02
General Description
The MAX1157/MAX1159/MAX1175 14-bit, low-power,
successive-approximation analog-to-digital converters
(ADCs) feature automatic power-down, factory-trimmed
internal clock, and 14-bit wide parallel interface. 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 MAX1157 accepts an analog input voltage range
from 0 to +10V while the MAX1159 accepts a bipolar
analog input voltage range of ±10V. The MAX1175
accepts a bipolar analog input voltage range of ±5V.
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 MAX1157/MAX1159/MAX1175 are ideal for
high-performance, battery-powered data-acquisition
applications. Excellent AC performance (THD = -100dB)
and DC accuracy (±1LSB INL) make the MAX1157/
MAX1159/MAX1175 ideal for industrial process control,
instrumentation, and medical applications.
The MAX1157/MAX1159/MAX1175 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.
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
14-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
±1LSB INL (max)
o
±1LSB DNL (max)
o
Low Supply Current (MAX1159)
5.3mA (External Reference)
6.2mA (Internal Reference)
5μA AutoShutdown Mode
o
Small Footprint
28-Pin TSSOP Package
Ordering Information
INPUT VOLTAGE
RANGE
PART
TEMP RANGE
PIN-PACKAGE
INL (LSB)
MAX1157
ACUI*
MAX1157BCUI*
Ordering Information continued at end of data sheet.
*
Future product—contact factory for availability.
0
°
C to +70
°
C
0
°
C to +70
°
C
28 TSSOP
28 TSSOP
0 to +10V
0 to +10V
±1
±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
D3
D2
D1
D0
REFADJ
N.C.
N.C.
DV
DD
DGND
CS
RESET
REF
AGND
AIN
AGND
AV
DD
EOC
R/C
D13
D12
D11
D10
D9
D8
D7
D6
TSSOP
TOP VIEW
MAX1157
MAX1159
MAX1175
Pin Configuration
AutoShutdown is a trademark of Maxim Integrated Products, Inc.