MAX1274
1.8Msps, Single-Supply, Low-Power, True-Differential, 12-Bit ADCs
Part Details
- 1.8Msps Sampling Rate
- Only 45mW (typ) Power Dissipation
- Only 1µA (max) Shutdown Current
- High-Speed, SPI-Compatible, 3-Wire Serial Interface
- 70dB S/(N + D) at 525kHz Input Frequency
- Internal True-Differential Track/Hold (T/H)
- External Reference
- No Pipeline Delays
- Small 12-Pin TQFN Package
The MAX1274/MAX1275 low-power, high-speed, serial-output, 12-bit, analog-to-digital converters (ADCs) operate at up to 1.8Msps. These devices feature true-differential inputs, offering better noise immunity, distortion improvements, and a wider dynamic range over single-ended inputs. A standard SPI™/QSPI™/MICROWIRE™ interface provides the clock necessary for conversion. These devices easily interface with standard digital signal processor (DSP) synchronous serial interfaces.
The MAX1274/MAX1275 operate from a single +4.75V to +5.25V supply voltage and require an external reference. The MAX1274 has a unipolar analog input, while the MAX1275 has a bipolar analog input. These devices feature a partial power-down mode and a full power-down mode for use between conversions, which lower the supply current to 1mA (typ) and 1µA (max), respectively. Also featured is a separate power-supply input (VL), which allows direct interfacing to +1.8V to VDD digital logic. The fast conversion speed, low-power dissipation, excellent AC performance, and DC accuracy (±1 LSB INL) make the MAX1274/MAX1275 ideal for industrial process control, motor control, and base-station applications.
The MAX1274/MAX1275 come in a 12-pin TQFN package, and are available in the extended (-40°C to +85°C) temperature range.
Applications
- Bill Validation
- Communications
- Data Acquisition
- Motor Control
- Portable Instrumentation
Software Resources
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| Parts | Product Life Cycle | Description |
|---|---|---|
| Analog to Digital Converters (ADCs) 5 | ||
| MAX1072 | PRODUCTION | 1.8Msps, Single-Supply, Low-Power, True-Differential, 10-Bit ADCs |
| MAX1277 | 1.5Msps, Single-Supply, Low-Power, True-Differential, 12-Bit ADCs with Internal Reference | |
| MAX1276 | PRODUCTION | 1.8Msps, Single-Supply, Low-Power, True-Differential, 12-Bit ADCs with Internal Reference |
| MAX11108 | PRODUCTION | Tiny, 2.1mm x 1.6mm, 3Msps, Low-Power, Serial 12-Bit ADC |
| MAX11105 | PRODUCTION | 2Msps/3Msps, Low-Power, Serial 12-/10-/8-Bit ADCs |
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