MAX111

Features:

Single +5V Supply (MAX111)
Two Differential Input Channels
14-Bit Resolution Plus Sign and Overrange
0.03% Linearity (MAX110)
0.05% Linearity (MAX111)
Low Power Consumption:
550A (MAX110)
640A (MAX111)
4A Shutdown Current
Up to 50 Conversions/sec
50Hz/60Hz Rejection
Auto-Calibration Mode
No External Components Required
16-Pin DIP/SO, 20-Pin SSOP


Application

Process Control
Weigh Scales
Panel Meters
Data-Acquisition Systems
Temperature Measurement


Pinout




Specifications

V_DD to GND...........................................................................+6V    16-Pin Wide SO (derate 9.52mW/ above +70) ......762mW
V_SS to GND (MAX110)..............................................+0.3V to -6V    20-Pin SSOP (derate 8.00mW/ above +70)...........640mW
AGND to DGND.....................................................-0.3V to +0.3V    16-Pin CERDIP (derate 10.00mW/ above +70)......800mW
VIN1+, VIN1-......................................(V_DD + 0.3V) to (V_SS - 0.3V)  Operating Temperature Ranges
VIN2+, VIN2-......................................(V_DD + 0.3V) to (V_SS - 0.3V) MAX11_ _C_ _......................................................0 to +70
VREF+, VREF- ....................................(V_DD + 0.3V) to (V_SS - 0.3V) MAX11_ _E_ _...................................................-40 to +85
Digital Inputs and Outputs.........................(V_DD + 0.3V) to -0.3V MAX11_BMJE.................................................-55 to +125
Continuous Power Dissipation Storage Temperature Range.............................-65 to +160
16-Pin Plastic DIP (derate 10.53mW/ above +70).....842mW Lead Temperature (soldering, 10sec).............................+300


Description

The MAX110/MAX111 analog-to-digital converters (ADCs) use an internal auto-calibration technique to achieve 14-bit resolution plus overrange, with no exter-nal components. Operating supply current is only 550A (MAX110) and reduces to 4A in power-down mode, making these ADCs ideal for high-resolution bat-tery-powered or remote-sensing applications. A fast serial interface simplifies signal routing and opto-isola-tion, saves microcontroller pins, and offers compatibility with SPI(TM), QSPI(TM), and MICROWIRE(TM). The MAX110 operates with ±5V supplies, and converts differential analog signals in the -3V to +3V range. The MAX111 operates with a single +5V supply and converts differ-ential analog signals in the ±1.5V range, or single-ended signals in the 0V to +1.5V range.Internal calibration allows for both offset and gain-error correction under microprocessor (P) control. Both devices are available in space-saving 16-pin DIP and SO packages, as well as an even smaller 20-pin SSOP package.