Packaging information
| Package | Pins WQFN (RTE) | 16 |
| Operating temperature range (°C) -40 to 125 |
| Package qty | Carrier 250 | SMALL T&R |
Features for the ADS7948
- Sample rate: 2 MSPS
- Pin-compatible family: 12-, 10-, 8-bit
- High resolution, high throughput:
- ADS7947: 12 bit, 2.1 MSPS
- ADS7948: 10 bit, 2.57 MSPS
- ADS7949: 8 bit, 3 MSPS
- Excellent
performance:
- No missing codes
- INL: 1 LSB (max)
- SNR: 72 dB (min)
- Low
power:
- 7.5 mW at 2-MSPS operation
- Auto power-down at
lower speeds:
- 3.8 mW at 500 kSPS
- 0.8 mW at 100 kSPS
- 0.16 mW at 20 kSPS
- Wide supply
range:
- Analog: 2.7 V to 5.5 V
- Digital: 1.65 V to AVDD
- SPI-compatible serial interface
- Extended temperature range: –40°C to +125°C
- Tiny footprint: 3-mm × 3-mm WQFN
Description for the ADS7948
The ADS7947, ADS7948, and ADS7949 are pin-compatible 12-bit, 10-bit, and 8-bit, 2-MSPS, analog-to-digital converters (ADCs), respectively. The devices operate at a 2-MSPS sample rate with a standard 16 clock data frame. In addition, the ADS7947 (12-bit) can be operated at 2.1 MSPS, the ADS7948 (10-bit) at 2.57 MSPS, and the ADS7949 (8-bit) at 3 MSPS with a short data frame optimized for the number of clocks sufficient for conversion with no drop in performance. The devices feature both outstanding dc precision and excellent dynamic performance. This family of pin-compatible devices includes a two-channel input multiplexer and a low-power successive approximation register (SAR) ADC.
The ADS7947, ADS7948, and ADS7949 support a wide analog supply range that supports the full-scale input range up to 5 V. A simple SPI digital interface, with a digital supply that can operate as low as 1.65 V, allows for easy interfacing to a wide variety of digital controllers. Automatic power-down can be enabled when operating at slower speeds to dramatically reduce power consumption.
Offered in a tiny 3-mm × 3-mm WQFN package, the ADS7947, ADS7948, and ADS7949 are fully specified over the extended temperature range of –40°C to +125°C and are suitable for a wide variety of data acquisition applications where high performance, low power, and small size are key.