19-2442; Rev 1; 10/02
2.7V to 5.5V, Low-Power, 4-/12-Channel
2-Wire Serial 8-Bit ADCs
General Description
Features
o High-Speed I2C-Compatible Serial Interface
The MAX1036–MAX1039 low-power, 8-bit, multichannel,
analog-to-digital converters (ADCs) feature internal
track/hold (T/H), voltage reference, clock, and an
I2C-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.
400kHz Fast Mode
1.7MHz High-Speed Mode
o Single Supply
2.7V to 3.6V (MAX1037/MAX1039)
4.5V to 5.5V (MAX1036/MAX1038)
o Internal Reference
2.048V (MAX1037/MAX1039)
4.096V (MAX1036/MAX1038)
o External Reference: 1V to V
DD
o Internal Clock
The full-scale analog input range is determined by the
internal reference or by an externally applied reference
voltage ranging from 1V to V . The MAX1037/
DD
MAX1039 feature a 2.048V internal reference and the
MAX1036/MAX1038 feature a 4.096V internal reference.
o 4-Channel Single-Ended or 2-Channel Pseudo-
Differential (MAX1036/MAX1037)
o 12-Channel Single-Ended or 6-Channel Pseudo-
Differential (MAX1038/MAX1039)
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.
o Internal FIFO with Channel-Scan Mode
o Low Power
350µA at 188ksps
110µA at 75ksps
8µA at 10ksps
1µA in Power-Down Mode
Applications
o Software Configurable Unipolar/Bipolar
Hand-Held Portable Applications
o Small Packages
Medical Instruments
8-Pin SOT23 (MAX1036/MAX1037)
16-Pin QSOP (MAX1038/MAX1039)
Battery-Powered Test Equipment
Solar-Powered Remote Systems
Received-Signal-Strength Indicators
System Supervision
Pin Configurations and Typical Operating Circuit appear
at end of data sheet.
Ordering Information
TUE
(LSB)
INPUT
CHANNELS
INTERNAL
REFERENCE (V)
TOP
MARK
PART
TEMP RANGE
PIN-PACKAGE
MAX1036EKA-T
MAX1037EKA-T
MAX1038AEEE
MAX1039AEEE
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
8 SOT23-8
8 SOT23-8
16 QSOP
16 QSOP
±2
±2
±1
±1
4
4
4.096
2.048
4.096
2.048
AAJE
AAJG
—
12
12
—
AutoShutdown is a trademark of Maxim Integrated Products, Inc.
________________________________________________________________ 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.