Description

The CS5505/6/7/8 are a family of low power CMOS A/D converters which are ideal for measuring low-frequency signals representing physical, chemical, and biological processes.

The CS5507/8 have single-channel differential analog and reference inputs while the CS5505/6 have four pseudo-differential analog input channels. The CS5505/7 have a 16-bit output word. The CS5506/8 have a 20-bit output word.The CS5505/6/7/8 sample upon command up to 100 Sps.

The on-chip digital filter offers superior line rejection at 50 and 60 Hz when the device is operated from a 32.768 kHz clock (output word rate = 20 Sps).

The CS5505/6/7/8 include on-chip self-calibration circuitry which can be initiated at any time or temperature to ensure minimum offset and full-scale errors.

The CS5505/6/7/8 serial port offers two general-purpose modes for the direct interface to shift registers or synchronous serial ports of industry-standard microcontrollers.

Features

● Very Low Power Consumption

- Single supply +5 V operation: 1.7 mW

- Dual supply ±5 V operation: 3.2 mW

● Offers superior performance to VFCs and

multi-slope integrating ADCs

● Differential Inputs

- Single Channel (CS5507/8) and Four-Channel

(CS5505/6) pseudo-differential versions

● Either 5 V or 3.3 V Digital Interface

● Linearity Error:

- ±0.0015 FS (16-bit CS5505/7)

- ±0.0007 FS (20-bit CS5506/8)

● Output update rates up to 100 Sps

● Flexible Serial Port

● Pin-Selectable Unipolar/Bipolar Ranges