MAX1106 Datasheet, PDF (1/16 Pages) Maxim Integrated Products – Single-Supply, Low-Power, Serial 8-Bit ADCs

19-1432; Rev 0; 3/99
Single-Supply, Low-Power,
Serial 8-Bit ADCs
General Description
The MAX1106/MAX1107 low-power, 8-bit, single-channel,
analog-to-digital converters (ADCs) feature an internal
track/hold (T/H), voltage reference, clock, and serial inter-
face. The MAX1106 is specified from +2.7V to +3.6V and
consumes only 96µA. The MAX1107 is specified from
+4.5V to +5.5V and consumes only 107µA. The analog
inputs are pin-configurable, allowing unipolar and single-
ended or differential operation.
The full-scale analog input range is determined by the
internal reference of +2.048V (MAX1106) or +4.096V
(MAX1107), or by an externally applied reference rang-
ing from 1V to V_DD. The MAX1106/MAX1107 also feature
a pin-selectable power-down mode that reduces power
consumption to 0.5µA when the device is not in use. The
3-wire serial interface directly connects to SPI™, QSPI™,
and MICROWIRE™ devices without external logic.
Conversions up to 25ksps are performed using the inter-
nal clock.
The MAX1106/MAX1107 are available in a 10-pin µMAX
package with a footprint that is just 20% of an
8-pin plastic DIP.
Applications
Portable Data Logging
Hand-Held Measurement Devices
Medical Instruments
System Diagnostics
Solar-Powered Remote Systems
4–20mA-Powered Remote Systems
Receive-Signal-Strength Indicators
Pin Configuration
TOP VIEW
V_DD 1
IN+ 2
IN- 3
GND 4
REFOUT 5
MAX1106
MAX1107
µMAX
10 SCLK
9 DOUT
8 SHDN
7 CONVST
6 REFIN
SPI and QSPI are trademarks of Motorola, Inc.
MICROWIRE is a trademark of National Semiconductor Corp.
Features
o Single Supply: +2.7V to +3.6V (MAX1106)
+4.5V to +5.5V (MAX1107)
o Low Power: 96µA at +3V and 25ksps
0.5µA in Power-Down Mode
o Pin-Programmable Configuration
o 0 to V_DD Input Voltage Range
o Internal Track/Hold
o Internal Reference: +2.048V (MAX1106)
+4.096V (MAX1107)
o 1V to V_DD Reference Input Range
o SPI/QSPI/MICROWIRE-Compatible Serial Interface
o Small 10-Pin µMAX Package
PART
MAX1106CUB
MAX1106EUB
MAX1107CUB
MAX1107EUB
Ordering Information
TEMP. RANGE
0°C to +70°C
-40°C to +85°C
0°C to +70°C
-40°C to +85°C
PIN-PACKAGE
10 µMAX
10 µMAX
10 µMAX
10 µMAX
CONVST
SCLK
SHDN
Functional Diagram
V_DD
MAX1106
MAX1107
OUTPUT
SHIFT
REGISTER
DOUT
IN+
IN-
REFOUT
REFIN
CONTROL
LOGIC
ANALOG
INPUT
MUX
INTERNAL
REFERENCE
INTERNAL
OSCILLATOR
T/H
SAR
CHARGE
REDISTRIBUTION
DAC
GND
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