| Resolution (Bits) | 12 |
| Number of input channels | 4 |
| Sample rate (Max) (kSPS) | 200 |
| Interface type | Parallel |
| Architecture | SAR |
| Input type | Single-Ended |
| Multi-channel configuration | Multiplexed |
| Rating | Catalog |
| Reference mode | Ext |
| Input range (Max) (V) | 5.25 |
| Input range (Min) (V) | 0 |
| Operating temperature range (C) | -40 to 85 |
| Power consumption (Typ) (mW) | 1.8 |
| Analog voltage AVDD (Min) (V) | 2.7 |
| SNR (dB) | 70 |
| Analog voltage AVDD (Max) (V) | 5.25 |
| INL (Max) (+/-LSB) | 1 |
| Digital supply (Min) (V) | 2.7 |
| Digital supply (Max) (V) | 5.25 |
- SINGLE SUPPLY: 2.7V to 5V
- 4-CHANNEL INPUT MULTIPLEXER
- UP TO 200kHz SAMPLING RATE
- FULL 12-BIT PARALLEL INTERFACE
- ±1LSB INL AND DNL
- NO MISSING CODES
- 72dB SINAD
- LOW POWER:2mW
- SSOP-28 PACKAGE
- APPLICATIONS
- DATA ACQUISITION
- TEST AND MEASUREMENT
- INDUSTRIAL PROCESS CONTROL
- MEDICAL INSTRUMENTS
- LABORATORY EQUIPMENT
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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.