General Description
The AS1543/44 is a 12-bit high-speed, low-power, 8/4-channel, successive-approximation ADC that operates from a single 2.7 to 5.25V supply. The device features high throughput rates (1Msps) and a low-noise, wide bandwidth track-and-hold amplifier that can handle input frequencies in excess of 1 MHz.

2 Key Features
Single Supply Operation with VDRIVE Function: 2.7 to 5.25V
Fast Throughput Rate: 1 Msps
Sequencer & Channel Counter
Software-Configurable Analog Input Types:
  - 8/4-Channel Single-Ended
  - 4/2-Channel Fully-Differential
Software-Configurable Input Range
Low Power Consumption at Max Throughput Rates:
  - 10.1mW @ 1Msps (3.6V Supply)
  - 18.4mW @ 1Msps (5.25V Supply)
Shutdown Mode Current: 0.5µA
Flexible Power/Serial Clock Speed Management
Wide Input Bandwidth: 71dB SNR @ 50 kHz Input Frequency
No Pipeline Delays
High Speed SPI/QSPI/Microwire/DSP Interface
TQFN(4x4)-20 Package

APPLICATIONs
The devices are ideal for remote sensors, data-acquisition and data-logging devices, pen-digitizers, process control, or any other space-limited A/D application with low power-consumption requirements.