ADS7825: 4 Channel, 16-Bit SPI/Parallel Analog to digital converter, dip-28

Description

The ADS7825 can acquire and convert 16 bits to within ±2.0 LSB in 25µs max while consuming only 50mW max. Laser-trimmed scaling resistors provide the standard industrial ±10V input range and channel-to-channel matching of ±0.1%. The ADS7825 is a low-power 16-bit sampling A/D with a four channel input multiplexer, S/H, clock, reference, and a parallel/serial microprocessor interface. It can be configured in a continuous conversion mode to sequentially digitize all four channels. The 28-pin ADS7825 is available in a plastic 0.3" DIP and in a SOIC, both fully specified for operation over the industrial –40°C to +85°C range.

Features

• 25µs max SAMPLING AND CONVERSION

• SINGLE +5V SUPPLY OPERATION

• PIN-COMPATIBLE WITH 12-BIT ADS7824

• PARALLEL AND SERIAL DATA OUTPUT

• 28-PIN 0.3" PLASTIC DIP AND SOIC

• ±2.0 LSB max INL

• 50mW max POWER DISSIPATION

• 50µW POWER DOWN MODE

• ±10V INPUT RANGE, FOUR CHANNEL MULTIPLEXER

• CONTINUOUS CONVERSION MODE

Parameters

• Resolution (Bits): 16

• Sample rate (max) (ksps): 40

• Number of input channels: 4

• Interface type: Parallel, SPI

• Architecture: SAR

• Input type: Single-ended

• Multichannel configuration: Multiplexed

• Rating: Catalog

• Reference mode: External, Internal

• Input voltage range (max) (V): 10

• Input voltage range (min) (V): -10

• Features: Over-Voltage Protection

• Operating temperature range (°C): -40 to 85

• Power consumption (typ) (mW): 50

• Analog supply voltage (min) (V): 4.75

• Analog supply voltage (max) (V): 5.25

• SNR (dB): 86

• Digital supply (min) (V): 4.75

• Digital supply (max) (V): 5.25

External Links:

• Arduino interfacing driver code, https://github.com/freespace/arduino-ADS7825