2-Channel, Low-Cost A/D Converter for Electronic Weigh-Scale Applications
The CS5550 is an easy-to-design, value-priced, highly integrated solution with a small footprint. The CS5550 enables weigh-scale manufacturers to provide accurate, cost-effective solutions for their customers. This IC from Cirrus Logic is an integrated device that combines two Delta Sigma analog-to-digital (A/D) converters, two amplifiers and a serial interface on a single chip. For communication with a microcontroller, the IC features a bi-directional serial interface, which is initialized and fully functional upon reset. The device also offers excellent temperature stability for long-life operation. The CS5550 delivers precise measurements and is ideal for electronic weigh-scale applications.
CIRRUS ROCKS® CIRRUS® ENGINEERED TO ROCK® INNOVATION THAT ROCKS®
Features
- Output word rate: 2.44 kSPS to 4.88 kSPS
- 24-bit A/D registers on both channels
- Channel 1: 13 ENOBs
- Channel 2: 10 ENOBs
- Power consumption: <12 mW
- Adjustable input range on channel 1
- Ground-referenced signals with single supply
- On-chip 2.5 V reference (25 ppm/°C typ.)
- Simple 3-wire digital serial interface
- Power supply configurations
- VA+ = +5 V
- AGND = 0 V
- VD+ = +3.3 V to +5 V
- Offset and gain calibrations on both channels
- Package: 24-pin SSOP; lead-free assembly
Parametric Specifications
| Resolution (bits) | 24 |
| Throughput (Sps) | 4883 |
| Integral Linearity (%FS) | 0.01 |
| Differential Linearity (±LSB) | NMC |
| Channels | 2 |
| Power Consumption (mW) | 11.6 (VD+ = 3.3 V); 21 (VD+ = 5 V) |
| Package | 24 SSOP |
