19-2755; Rev 0; 1/03
16-Bit, 135ksps, Single-Supply ADCs with
Bipolar Analog Input Range
General Description
The MAX1177/MAX1178/MAX1188 16-bit, low-power,
successive-approximation analog-to-digital converters
(ADCs) feature automatic power-down, a factory-
trimmed internal clock, and a byte-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 MAX1177 accepts an analog input voltage range
from 0 to +10V. The MAX1188 accepts a bipolar analog
input voltage range of 卤10V, while the MAX1178
accepts a bipolar analog input voltage range of 卤5V.
All devices consume no more than 26.5mW at a sam-
pling rate of 135ksps when using an external reference
and 31mW when using the internal +4.096V reference.
AutoShutdown鈩?reduces supply current to 0.4mA at
10ksps.
The MAX1177/MAX1178/MAX1188 are ideal for high-
performance, battery-powered, data-acquisition appli-
cations. Excellent AC performance (THD = -100dB) and
DC accuracy (卤2 LSB INL) make the MAX1177/
MAX1178/MAX1188 ideal for industrial process control,
instrumentation, and medical applications.
The MAX1177/MAX1178/MAX1188 are available in a
20-pin TSSOP package and are fully specified over the
-40掳C to +85掳C extended temperature range and the
0掳C to +70掳C commercial temperature range.
o
Byte-Wide Parallel Interface
o
Analog Input Voltage Range: 卤10V, 卤5V, 0 to 10V
o
Single +4.75V to +5.25V Analog Supply Voltage
o
Interfaces with +2.7V to +5.25V Digital Logic
o
卤2 LSB INL (max)
o
卤1 LSB DNL (max)
o
Low Supply Current (max)
2.9mA (External Reference)
3.8mA (Internal Reference)
5碌A AutoShutdown Mode
o
Small Footprint
o
20-Pin TSSOP Package
Features
MAX1177/MAX1178/MAX1188
Ordering Information
PART
MAX1177ACUP*
MAX1177BCUP*
MAX1177CCUP*
MAX1177AEUP*
MAX1177BEUP*
TEMP RANGE
0掳C to +70掳C
0掳C to +70掳C
0掳C to +70掳C
-40掳C to +85掳C
-40掳C to +85掳C
INPUT
PIN-
VOLTAGE
PACKAGE
RANGE (V)
20 TSSOP
20 TSSOP
20 TSSOP
20 TSSOP
20 TSSOP
20 TSSOP
0 to +10
0 to +10
0 to +10
0 to +10
0 to +10
0 to +10
MAX1177CEUP* -40掳C to +85掳C
*Future
product鈥攃ontact factory for availability.
Ordering Information continued at end of data sheet.
Applications
Temperature Sensing and Monitoring
Industrial Process Control
I/O Modules
Data-Acquisition Systems
Precision Instrumentation
Typical Operating Circuit
+5V ANALOG
0.1碌F
+5V DIGITAL
0.1碌F
AV
DD
ANALOG INPUT
AIN
DV
DD
碌P
DATA
D0鈥揇7 BUS
OR
D8鈥揇15
EOC
REF
REFADJ
R/C
CS
HBEN
HIGH
BYTE
LOW
BYTE
MAX1177
MAX1178
MAX1188
Pin Configuration and Functional Diagram appear at end of
data sheet.
AutoShutdown is a trademark of Maxim Integrated Products, Inc.
AGND DGND
0.1碌F
10碌F
________________________________________________________________
Maxim Integrated Products
1
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim鈥檚 website at www.maxim-ic.com.
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