MAX1178 Datasheet, PDF (1/14 Pages) Maxim Integrated Products – 16-Bit, 135ksps, Single-Supply ADCs with Bipolar Analog Input Range

19-2755; Rev 1; 8/03
16-Bit, 135ksps, Single-Supply ADCs with
Bipolar Analog Input Range
General Description
The MAX1178/MAX1188 16-bit, low-power, successive-
approximation analog-to-digital converters (ADCs) fea-
ture automatic power-down, a factory-trimmed internal
clock, and a byte-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 a +2.7V to +5.25V digital logic.
The MAX1188 accepts a bipolar analog input voltage
range of ±10V, while the MAX1178 accepts a bipolar
analog input voltage range of ±5V. All devices consume
no more than 26.5mW at a sampling rate of 135ksps
when using an external reference, and 31mW when using
the internal +4.096V reference. AutoShutdown™ reduces
supply current to 0.4mA at 10ksps.
The MAX1178/MAX1188 are ideal for high-perfor-
mance, battery-powered, data-acquisition applications.
Excellent AC performance (THD = -100dB) and DC
accuracy (±2 LSB INL) make the MAX1178/MAX1188
ideal for industrial process control, instrumentation, and
medical applications.
The MAX1178/MAX1188 are available in a 20-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.
Features
o Byte-Wide Parallel Interface
o Analog Input Voltage Range: ±10V, ±5V
o Single +4.75V to +5.25V Analog Supply Voltage
o Interface with +2.7V to +5.25V Digital Logic
o ±2 LSB INL
o ±1 LSB DNL
o Low Supply Current (max)
2.9mA (External Reference)
3.8mA (Internal Reference)
5µA AutoShutdown Mode
o Small Footprint
o 20-Pin TSSOP Package
Ordering Information
PART
TEMP RANGE
PIN-
PACKAGE
INPUT
VOLTAGE
RANGE (V)
MAX1178ACUP 0°C to +70°C 20 TSSOP
±5
MAX1178BCUP 0°C to +70°C 20 TSSOP
±5
MAX1178CCUP 0°C to +70°C 20 TSSOP
±5
MAX1178AEUP -40°C to +85°C 20 TSSOP
±5
MAX1178BEUP -40°C to +85°C 20 TSSOP
±5
MAX1178CEUP -40°C to +85°C 20 TSSOP
±5
Ordering Information continued at end of data sheet.
Applications
Temperature Sensing and Monitoring
Industrial Process Control
I/O Modules
Data-Acquisition Systems
Precision Instrumentation
Pin Configuration and Functional Diagram appear at end of
data sheet.
AutoShutdown is a trademark of Maxim Integrated Products, Inc.
Typical Operating Circuit
+5V ANALOG +5V DIGITAL
0.1µF
0.1µF
ANALOG INPUT
HIGH
BYTE
LOW
BYTE
AV_DD
AIN
DV_DD
D0–D7
OR
D8–D15
µP DATA
BUS
R/C
CS
HBEN
MAX1178
MAX1188 ^EOC
REF
REFADJ
AGND DGND
0.1µF 10µF
________________________________________________________________ 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.