1.5Msps, Single-Supply, Low-Power, True-Differential, 12-Bit ADCs
DescriptionThe MAX1224/MAX1225 low-power, high-speed, serial-output, 12-bit, analog-to-digital converters (ADCs) operate at up to 1.5Msps. 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 MAX1224/MAX1225 operate from a single +2.7V to +3.6V supply voltage and require an external reference. The MAX1224 has a unipolar analog input, while the MAX1225 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, good AC performance, and DC accuracy (±1.5 LSB INL) make the MAX1224/MAX1225 ideal for industrial process control, motor control, and base-station applications.
The MAX1224/MAX1225 come in a 12-pin TQFN package, and are available in the extended (-40°C to +85°C) temperature range.
- 1.5Msps Sampling Rate
- Only 18mW (typ) Power Dissipation
- Only 1µA (max) Shutdown Current
- High-Speed, SPI-Compatible, 3-Wire Serial Interface
- 69dB S/(N + D) at 525kHz Input Frequency
- Internal True-Differential Track/Hold (T/H)
- External Reference
- No Pipeline Delays
- Small 12-Pin TQFN Package
- Bill Validation
- Data Acquisition
- Motor Control
- Portable Instrumentation
|Input Chan.||Conv. Rate|
|ADC Architecture||Data Bus||Diff/S.E. Input||External VREF|
|Device||Fab Process||Technology||Sample size||Rejects||FIT at 25°C||FIT at 55°C||Material Composition|