AD7883
AD7883 is LC2MOS 12-Bit 3.3 V Sampling ADC manufactured by Analog Devices.
FEATURES
Battery-patible Supply Voltage: Guaranteed Specs for VDD of 3 V to 3.6 V 12-Bit Monolithic A/D Converter 50 k Hz Throughput Rate
15 s Conversion Time 5 s On-Chip Track/Hold Amplifier Low Power Power Save Mode: 1 m W typ Normal Operation: 8 m W typ 70 d B SNR Small 24-Lead SOIC and 0.3" DIP Packages
APPLICATIONS Battery Powered Portable Systems Laptop puters
VINA
VINB
VREF AGND
CS CLKIN CONVST
RD BUSY
FUNCTIONAL BLOCK DIAGRAM
SAMPLING PARATOR
+
- LOW POWER CONTROL CIRCUIT
12-BIT DAC
CONTROL LOGIC
SAR + COUNTER
THREE STATE BUFFERS
MODE
GENERAL DESCRIPTION
The AD7883 is a high speed, low power, 12-bit A/D converter which operates from a single +3 V to +3.6 V supply. It consists of a 5 µs track/hold amplifier, a 15 µs successive-approximation ADC, versatile interface logic and a multiple-input-range circuit. The part also includes a power save feature
.
Fast bus access times and standard control...