MAX1286 Datasheet, PDF (1/15 Pages) Maxim Integrated Products – 150ksps, 12-Bit, 2-Channel Single-Ended, and 1-Channel True-Differential ADCs in SOT23

19-2231; Rev 0; 10/01
EVALUATION ^KIT
AVAILABLE
150ksps, 12-Bit, 2-Channel Single-Ended, and
1-Channel True-Differential ADCs in SOT23
General Description
The MAX1286–MAX1289 are low-cost, micropower, seri-
al output 12-bit analog-to-digital converters (ADCs)
available in a tiny 8-pin SOT23. The MAX1286/MAX1288
operate with a single +5V supply. The MAX1287/
MAX1289 operate with a single +3V supply. The
devices feature a successive-approximation ADC, auto-
matic shutdown, fast wakeup (1.4µs), and a high-speed
3-wire interface. Power consumption is only 0.5mW
(V_DD = +2.7V) at the maximum sampling rate of
150ksps. AutoShutdown™ (0.2µA) between conversions
results in reduced power consumption at slower
throughput rates. The MAX1286/MAX1287 provide
2-channel, single-ended operations and accept input
signals from 0 to V_REF. The MAX1288/MAX1289 accept
true-differential inputs ranging from 0 to V_REF. Data is
accessed using an external clock through the 3-wire
SPI™/QSPI™/MICROWIRE™–compatible serial inter-
face. 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 consumption and minimal space.
Features
o Single-Supply Operation
+3V (MAX1287/MAX1289)
+5V (MAX1286/MAX1288)
o Autoshutdown Between Conversions
o Low Power
245µA at 150ksps
150µA at 100ksps
15µA at 10ksps
2µA at 1ksps
0.2µA in Shutdown
o True-Differential Track/Hold, 150kHz Sampling Rate
o Software-Configurable Unipolar/Bipolar
Conversion (MAX1288/MAX1289 Only)
o SPI/QSPI/MICROWIRE–Compatible Interface for
DSPs and Processors
o Internal Conversion Clock
o 8-Pin SOT23 Package
Applications
Low-Power Data Acquisition
Portable Temperature Monitors
Flowmeters
Touch Screens
Ordering Information
PART
MAX1286EKA-T
MAX1287EKA-T
MAX1288EKA-T
MAX1289EKA-T
TEMP.
RANGE
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
PIN-
PACKAGE
8 SOT23-8
8 SOT23-8
8 SOT23-8
8 SOT23-8
TOP
MARK
AAFA
AAEW
AAFC
AAEY
Pin Configuration
TOP VIEW
AutoShutdown is a trademark of Maxim Integrated Products, Inc.
SPI and QSPI are trademarks of Motorola, Inc.
MICROWIRE is a trademark of National Semiconductor Corp.
V_DD 1
AIN1 (AIN+) 2
AIN2 (AIN-) 3
GND 4
MAX1286
MAX1287
MAX1288
MAX1289
8 SCLK
7 DOUT
6 CNVST
5 REF
SOT23
( ) ARE FOR THE MAX1288/MAX1289
________________________________________________________________ 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.