MAX1275：1.8Msps, Single-Supply, Low-Power, True-Differential, 12-Bit ADCs
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.
Key Features
| MAX1274, MAX1275: Typical Operating Circuit Applications/Uses
|
DataSheet
| title | Download file |
|---|---|
| MAX1274-MAX1275 Data Sheet | MAX1274-MAX1275.pdf |
Parametrics
| Part Number | Resolution (bits) | Input Chan. | Conv. Rate (ksps) | ADC Architecture | Data Bus | Diff/S.E. Input | External VREF (V) | External VREF (V) | Unipolar VIN (V) | Bipolar VIN (±V) | THD (dB) | INL (±LSB) | Package/Pins | Budgetary Price |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| ADC | max | min | max | max | max | See Notes | ||||||||
| MAX1274 | 12 | 1 | 1800 | SAR | SPI | Diff. Only | 1 | 5.25 | 4.096 | 2.048 | -80 | 1.75 | TQFN/12 | $4.66 @1k |
| MAX1275 | TQFN/12 | $7.53 @1k | ||||||||||||
Related Products
- MAX11108：Tiny, 2.1mm x 1.6mm, 3Msps, Low-Power, Serial 12-Bit ADC
- MAX11105：2Msps/3Msps, Low-Power, Serial 12-/10-/8-Bit ADCs
- MAX1277：1.5Msps, Single-Supply, Low-Power, True-Differential, 12-Bit ADCs with Internal Reference
- MAX1276：1.8Msps, Single-Supply, Low-Power, True-Differential, 12-Bit ADCs with Internal Reference
- MAX1072：1.8Msps, Single-Supply, Low-Power, True-Differential, 10-Bit ADCs
Ordering Information
| Part Number | Status | Recommended Replacement | Package | Temp | RoHS |
|---|---|---|---|---|---|
| MAX1275AETC+ | Active | TQFN,;12 pin;16.8 mm² | -40°C to +85°C | Lead Free | |
| MAX1275AETC+T | Active | TQFN,;12 pin;16.8 mm² | -40°C to +85°C | Lead Free | |
| MAX1275BCTC | No Longer Available | MAX1275BETC+ | TQFN,;12 pin;16.8 mm² | 0°C to +70°C | No |
| MAX1275BCTC-T | No Longer Available | MAX1275BETC+ | QFN; | 0°C to +70°C | See data sheet |
| MAX1275BETC+ | Active | TQFN,;12 pin;16.8 mm² | -40°C to +85°C | Lead Free | |
| MAX1275BETC+T | Active | QFN; | -40°C to +85°C | See data sheet | |
| MAX1275CTC | No Longer Available | THNQFN; | 0°C to +70°C | See data sheet | |
| MAX1275ETC | No Longer Available | THNQFN; | -40°C to +85°C | See data sheet |
- MAX1274-MAX1275.pdf MAX1275
- MAX1274-MAX1275_cn.pdf MAX1275
- MAX1274-MAX1275_cn.pdf MAX1275
