The ADS7891 is a 14-bit 3-MSPS A-to-D converter with 2.5-V internal reference. The device includes a capacitor based SAR A/D converter with inherent sample and hold. The device offers a 14-bit parallel interface with an additional byte mode that provides easy interface with 8-bit processors. The device has a pseudo-differential input stage.
The IN swing of ±200 mV is useful to compensate for ground voltage mismatch between the ADC and sensor and also to cancel common-mode noise. With nap mode enabled, the device operates at lower power when used at lower conversion rates. The device is available in a 48-pin TQFP package.
Part number | オーダー・オプション | Resolution (Bits) | Sample rate (Max) (kSPS) | Number of input channels | Interface | Operating temperature range (C) | Package Group | Approx. price (US$) | Power consumption (Typ) (mW) | Package size: mm2:W x L (PKG) | Architecture | Input type | Multi-channel configuration | Reference mode | Features | Input range (Max) (V) | Input range (Min) (V) | Analog voltage AVDD (Min) (V) | Analog voltage AVDD (Max) (V) | Digital supply (Min) (V) | Digital supply (Max) (V) | INL (Max) (+/-LSB) | SNR (dB) | THD (Typ) (dB) | Rating |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
ADS7891 |
|
14 | 3000 | 1 | Parallel | -40 to 85 | TQFP | 48 | 13.81 | 1ku | 85 | 48TQFP: 81 mm2: 9 x 9 (TQFP | 48) | SAR |
Pseudo-Differential
Single-Ended |
Ext
Int |
Oscillator | 2.5 | 0 | 4.75 | 5.25 | 2.7 | 5.25 | 1.5 | 78.5 | -93 | Catalog | |
ADS7056 |
|
14 | 2500 | 1 | SPI | -40 to 125 | X2QFN | 8 | 2.00 | 1ku | 3.5 | 8X2QFN: 2 mm2: 1.5 x 1.5 (X2QFN | 8) | SAR | Single-Ended | Supply | Small Size | 3.6 | 0 | 2.35 | 3.6 | 1.65 | 3.6 | 3 | 74.9 | -85 | Catalog | |
ADS7279 |
|
14 | 1000 | 1 | Serial | -40 to 85 |
QFN | 16
TSSOP | 16 |
4.20 | 1ku | 13.7 |
16QFN: 16 mm2: 4 x 4 (QFN | 16)
16TSSOP: 22 mm2: 4.4 x 5 (TSSOP | 16) |
SAR | Single-Ended | Ext |
Daisy-Chainable
Oscillator |
5.5 | 0 | 2.7 | 5.5 | 1.65 | 5.5 | 1 | 85.9 | -100.1 | Catalog | |
ADS7890 | サンプルは利用できません。 | 14 | 1250 | 1 | SPI | -40 to 85 |