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