| ADS7844 | |
| Resolution(Bits) | 12 |
| Sample Rate (max) | 200kSPS |
| Architecture | SAR |
| Power Consumption(Typ)(mW) | 0.84 |
| SINAD(dB) | 72 |
| SNR(dB) | 72 |
| SFDR(dB) | 78 |
| DNL(Max)(+/-LSB) | 1 |
| INL(Max)(+/-LSB) | 1 |
| No Missing Codes(Bits) | 12 |
| No. of Supplies | 1 |
| Analog Voltage AV/DD(Min)(V) | 2.7 |
| Analog Voltage AV/DD(Max)(V) | 5.25 |
| Logic Voltage DV/DD(Min)(V) | 2.7 |
| Logic Voltage DV/DD(Max)(V) | 5.25 |
| Input Configuration Range | Vref |
| Reference Mode | Ext |
| Rating | Catalog |
| Pin/Package | 20SSOP, 20SSOP/QSOP |
| # Input Channels | 8 |
| Operating Temperature Range(°C) | -40 to 85 |
The ADS7844 is an 8-channel, 12-bit sampling analog-to-digital converter (ADC) with a synchronous serial interface. Typical power dissipation is 3mW at a 200kHz throughput rate and a +5V supply. The reference voltage (VREF) can be varied between 100mV and VCC, providing a corresponding input voltage range of 0V to VREF. The device includes a shutdown mode which reduces power dissipation to under 1uW. The ADS7844 is guaranteed down to 2.7V operation.
Low power, high speed, and on-board multiplexer make the ADS7844 ideal for battery- operated systems such as personal digital assistants, portable multichannel data loggers, and measurement equipment. The serial interface also provides low-cost isolation for remote data acquisition.
| 器件 | 状态 | 温度 (oC) | 价格（美元） | 封装 | 引脚 |
| ADS7844E | ACTIVE | 3.20 | 1ku | SSOP/QSOP (DBQ) | 20 | |
| ADS7844E/2K5 | ACTIVE | -40 to 85 | 2.90 | 1ku | SSOP/QSOP (DBQ) | 20 |
| ADS7844E/2K5G4 | ACTIVE | -40 to 85 | 2.90 | 1ku | SSOP/QSOP (DBQ) | 20 |
| ADS7844EB | ACTIVE | 3.75 | 1ku | SSOP/QSOP (DBQ) | 20 | |
| ADS7844EB/2K5 | ACTIVE | 3.50 | 1ku | SSOP/QSOP (DBQ) | 20 | |
| ADS7844EB/2K5G4 | ACTIVE | 3.50 | 1ku | SSOP/QSOP (DBQ) | 20 | |
| ADS7844EBG4 | ACTIVE | 3.75 | 1ku | SSOP/QSOP (DBQ) | 20 | |
| ADS7844EG4 | ACTIVE | 3.20 | 1ku | SSOP/QSOP (DBQ) | 20 | |
| ADS7844N | ACTIVE | 3.20 | 1ku | SSOP (DB) | 20 | |
| ADS7844N/1K | ACTIVE | -40 to 85 | 2.90 | 1ku | SSOP (DB) | 20 |
| ADS7844N/1KG4 | ACTIVE | -40 to 85 | 2.90 | 1ku | SSOP (DB) | 20 |
| ADS7844NB | ACTIVE | 3.75 | 1ku | SSOP (DB) | 20 | |
| ADS7844NB/1K | ACTIVE | 3.50 | 1ku | SSOP (DB) | 20 | |
| ADS7844NB/1KG4 | ACTIVE | 3.50 | 1ku | SSOP (DB) | 20 | |
| ADS7844NBG4 | ACTIVE | 3.75 | 1ku | SSOP (DB) | 20 | |
| ADS7844NG4 | ACTIVE | 3.20 | 1ku | SSOP (DB) | 20 |