General Description
The AS1520/AS1521 are low-power, 8/4-channel, 400/300ksps, 10-bit analog-to-digital (A/D) converters specifically designed to operate with single-supply devices. Superior AC characteristics, very low power consumption, and highly-reliable packaging make these ultra small devices perfect for battery-powered remote-sensor and data-acquisition devices.

2 Key Features
Single-Supply Operation:
  - +4.5 to +5.5V (AS1520)
  - +2.7 to +3.6V (AS1521)
Sampling Rate:
  - 400ksps (AS1520)
  - 300ksps (AS1521)
Software-Configurable Analog Input Types:
  - 8-Channel Single-Ended
  - 8-Channel Pseudo Differential Referenced to COM
  - 4-Channel Pseudo Differential
  - 4-Channel Fully Differential
Software-Configurable Input Range
Internal +2.5V Reference
Low-Current Operation:
  - 2.8mA @ 400ksps (AS1520)
  - 2.2mA @ 300ksps (AS1521)
  - 0.4mA in Reduced-Power Mode
  - 0.5µA in Full Power-Down Mode
SPI/QSPI/Microwire/TMS320-Compatible
20-pin TSSOP 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.