(China (Mainland))
Product Summary
The ADS7844N 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 1μW. The ADS7844N is guaranteed down to 2.7V operation.Low power, high speed, and on-board multiplexer make the ADS7844N 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. The ADS7844N is available in a 20-lead QSOP package and the MAX147 equivalent 20-lead SSOP package and is guaranteed over the –40℃ to +85℃ temperature range.
Parametrics
ADS7844N absolute maxium ratings:(1)Conversion Time:12Clk Cycles; (2)Throughput Rate: 200kHz; (3)Input Current: 100μA; (4)V(IH), 5.5V; V(L), 0.8V; V(OL), 0.4V; (5)Power Dissipation, 4.5mW; (6)Specified Performance, 85℃.
Features
ADS7844N features:(1) single supply: 2.7v to 5v; (2) 8-channel single-ended or; (3)4-channel differential input; (4)up to 200khz conversion rate; (5) ±1 lsb max inl and dnl; (6) guaranteed no missing codes; (7) 72db sinad; (8) serial interface; (9) 20-lead qsop and; (10)20-lead ssop packages; (11) alternate source for max147.
Diagrams
| Image | Part No | Mfg | Description |  |
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 ADS7844N |
Texas Instruments |
ADC (A/D Converters) 12-Bit 8-Ch Serial Output Sampling |
Data Sheet |
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ADS7844N/1K |
Texas Instruments |
ADC (A/D Converters) 12-Bit 8-Ch Serial Output Sampling |
Data Sheet |
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ADS7844NB |
Texas Instruments |
ADC (A/D Converters) 12-Bit 8-Ch Serial Output Sampling |
Data Sheet |
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ADS7844N/1KG4 |
Texas Instruments |
ADC (A/D Converters) 12-Bit 8-Ch Serial Output Sampling |
Data Sheet |
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ADS7844NB/1KG4 |
Texas Instruments |
ADC (A/D Converters) 12-Bit 8-Ch Serial Output Sampling |
Data Sheet |
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ADS7844NB/1K |
Texas Instruments |
ADC (A/D Converters) 12-Bit 8-Ch Serial Output Sampling |
Data Sheet |
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ADS7844NBG4 |
Texas Instruments |
ADC (A/D Converters) 12-Bit 8-Ch Serial Output Sampling |
Data Sheet |
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ADS7844NG4 |
Texas Instruments |
ADC (A/D Converters) 12-Bit 8-Ch Serial Output Sampling |
Data Sheet |
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