Rainbow Electronics MAX1089 - Manual

General Description
The MAX1086–MAX1089 are low-cost, micropower, ser-
ial output 10-bit analog-to-digital converters (ADCs)
available in a tiny 8-pin SOT23. The MAX1086/MAX1088
operate with a single +5V supply. The MAX1087/MAX1089
operate with a single +3V supply. The devices feature a
successive-approximation ADC, automatic shutdown,
fast wake-up (1.4µs), and a high-speed 3-wire inter-
face. Power consumption is only 0.5mW (V
DD = +2.7V)
at the maximum sampling rate of 150ksps.
Autoshutdown™ (0.1µA) between conversions results in
reduced power consumption at slower throughput
rates.
The MAX1086/MAX1087 provide 2-channel, single-
ended operation and accept input signals from 0 to
V
REF . The MAX1088/MAX1089 accept true-differential
inputs ranging from 0 to V REF . Data is accessed using
an external clock through the 3-wire SPI™, QSPI™, and
MICROWIRE™–compatible serial interface. Excellent
dynamic performance, low-power, ease of use, and
small package size, make these converters ideal for
portable battery-powered data acquisition applications,
and for other applications that demand low power con-
sumption and minimal space.
Applications
Low Power Data Acquisition
Portable Temperature Monitors
Flowmeters
Touch Screens
Features
♦ Single-Supply Operation
+3V(MAX1087/MAX1089)
+5V(MAX1086/MAX1088)
♦ AutoShutdown Between Conversions
♦ Low Power
200µA at 150ksps
130µA at 100ksps
65µA at 50ksps
13µA at 10ksps
1.5µA at 1ksps
0.2µA in Shutdown
♦ True-Differential Track/Hold, 150kHz Sampling Rate
♦ Software-Configurable Unipolar/Bipolar
Conversion (MAX1088/MAX1089 only)
♦ SPI, QSPI, MICROWIRE–Compatible Interface for
DSPs and Processors
♦ Internal Conversion Clock
♦ 8-Pin SOT23 Package
MAX1086–MAX1089
150ksps, 10-Bit, 2-Channel Single-Ended, and
1-Channel True-Differential ADCs in SOT23
________________________________________________________________ Maxim Integrated Products 1
CNVST
REF GND
1
2
8
7
SCLK
DOUT AIN1 (AIN+)
AIN2 (AIN-)
V DD
SOT23-8
TOP VIEW
( ) ARE FOR THE MAX1088/MAX1089
3
4
6
5
MAX1086
MAX1087
MAX1088
MAX1089
Pin Configuration
19-2036; Rev 0; 5/01
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.
Ordering Information
AutoShutdown is a trademark of Maxim Integrated Products.
SPI and QSPI are trademarks of Motorola Inc.
MICROWIRE is a trademark of National Semiconductor Corp.
PART
TEMP.
RANGE
PIN-
PACKAGE
TOP
MARK
MAX1086EKA-T -40°C to +85°C 8 SOT23 AAEZ
MAX1087EKA-T -40°C to +85°C 8 SOT23 AAEV
MAX1088EKA-T -40°C to +85°C 8 SOT23 AAFB
MAX1089EKA-T -40°C to +85°C 8 SOT23 AAEX