Rainbow Electronics MAX1039 - Manual

General Description
The MAX1036–MAX1039 low-power, 8-bit, multichannel,
analog-to-digital converters (ADCs) feature internal
track/hold (T/H), voltage reference, clock, and an
I
2 C™-compatible 2-wire serial interface. These devices
operate from a single supply and require only 350µA at
the maximum sampling rate of 188ksps. Auto-
Shutdown™ powers down the devices between conver-
sions reducing supply current to less than 1µA at low
throughput rates. The MAX1036/MAX1037 have four ana-
log input channels each, while the MAX1038/MAX1039
have twelve analog input channels. The analog inputs are
software configurable for unipolar or bipolar and single-
ended or pseudo-differential operation.
The full-scale analog input range is determined by the
internal reference or by an externally applied reference
voltage ranging from 1V to V
DD . The MAX1037/
MAX1039 feature a 2.048V internal reference and the
MAX1036/MAX1038 feature a 4.096V internal reference.
The MAX1036/MAX1037 are available in 8-pin SOT23
packages. The MAX1038/MAX1039 are available in 16-
pin QSOP packages. The MAX1036–MAX1039 are guar-
anteed over the extended industrial temperature range
(-40°C to +85°C). Refer to MAX1136–MAX1139 for 10-bit
devices and to the MAX1236–MAX1239 for 12-bit
devices.
Applications
Hand-Held Portable Applications
Medical Instruments
Battery-Powered Test Equipment
Solar-Powered Remote Systems
Received-Signal-Strength Indicators
System Supervision
Features
♦ High-Speed I 2 C-Compatible Serial Interface
400kHz Fast Mode
1.7MHz High-Speed Mode
♦ Single Supply
2.7V to 3.6V (MAX1037/MAX1039)
4.5V to 5.5V (MAX1036/MAX1038)
♦ Internal Reference
2.048V (MAX1037/MAX1039)
4.096V (MAX1036/MAX1038)
♦ External Reference: 1V to V
DD
♦ Internal Clock
♦ 4-Channel Single-Ended or 2-Channel Pseudo-
Differential (MAX1036/MAX1037)
♦ 12-Channel Single-Ended or 6-Channel Pseudo-
Differential (MAX1038/MAX1039)
♦ Internal FIFO with Channel-Scan Mode
♦ Low Power
350µA at 188ksps
110µA at 75ksps
8µA at 10ksps
1µA in Power-Down Mode
♦ Software Configurable Unipolar/Bipolar
♦ Small Packages
8-Pin SOT23 (MAX1036/MAX1037)
16-Pin QSOP (MAX1038/MAX1039)
MAX1036–MAX1039
2.7V to 5.5V, Low-Power, 4-/12-Channel
2-Wire Serial 8-Bit ADCs
________________________________________________________________ Maxim Integrated Products 1
Ordering Information
19-2442; Rev 0; 4/02
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.
PART TEMP RANGE PIN-PACKAGE
TUE
(LSB)
INPUT
CHANNELS
INTERNAL
REFERENCE (V)
TOP
MARK
MAX1036EKA-T -40 °C to +85°C 8 SOT23-8 ±2 4 4.096 AAJE
MAX1037EKA-T -40 °C to +85°C 8 SOT23-8 ±2 4 2.048 AAJG
MAX1038AEEE -40 °C to +85°C 16 QSOP ±1 12 4.096 —
MAX1039AEEE -40 °C to +85°C 16 QSOP ±1 12 2.048 —
I 2 C is a trademark of Philips Corp.
AutoShutdown is a trademark of Maxim Integrated Products, Inc.
Pin Configurations and Typical Operating Circuit appear
at end of data sheet.