0
ACTIVE
Resolution (Bits) |
12 |
Sample rate (max) (ksps) |
200 |
Number of input channels |
4 |
Interface type |
Parallel |
Architecture |
SAR |
Input type |
Single-ended |
Multichannel configuration |
Multiplexed |
Rating |
Catalog |
Reference mode |
External |
Input voltage range (max) (V) |
5.25 |
Input voltage range (min) (V) |
0 |
Operating temperature range (°C) |
-40 to 85 |
Power consumption (typ) (mW) |
1.8 |
Analog supply voltage (min) (V) |
2.7 |
Analog supply voltage (max) (V) |
5.25 |
SNR (dB) |
70 |
Digital supply (min) (V) |
2.7 |
Digital supply (max) (V) |
5.25 |
SSOP (DB)-28-79.56 mm² 10.2 x 7.8
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The ADS7842 is a complete, 4-channel, 12-bit Analog-to-Digital Converter (ADC). It contains a 12-bit, capacitorbased, Successive Approximation Register (SAR) ADC with a sample-and-hold amplifier, interface for microprocessor use, and parallel, 3-state output drivers. The ADS7842 is specified at a 200kHz sampling rate while dissipating only 2mW of power. The reference voltage can be varied from 100mV to VCC with a corresponding LSB resolution from 24µV to 1.22mV. The ADS7842 is tested down to 2.7V operation.
Low power, high speed, and an onboard multiplexer make the ADS7842 ideal for battery-operated systems such as portable, multi-channel dataloggers and measurement equipment. The ADS7842 is available in an SSOP-28 package and is tested over the -40°C to +85°C temperature range.
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