Single-Supply / Low-Power / Serial 8-Bit ADCs - Maxim
Description
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 interface.
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 singleended 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 ranging from 1V to VDD.
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 internal 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.
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 VDD Input Voltage Range o Internal Track/Hold o Internal Reference: +2.
048V (MAX1106) +4.
096V (MAX1107) o 1V to VDD Reference Input Range o SPI/QSPI/MICROWIRE-Compatible Serial Interface o Small 10-Pin µMAX Package
MAX1106/MAX1107
Ordering Information
PART MAX1106CUB MAX1106EUB MAX1107CUB MAX1107EUB 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
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
Functional Diagram
VDD CONVST SCLK OUTPUT SHIFT REGISTER
Pin Configuration
TOP VIEW
VDD 1 IN+ IN...
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