| Resolution (Bits) | 12 |
| Number of input channels | 1 |
| Sample rate (Max) (kSPS) | 1000 |
| Interface type | SPI, Microwire (Serial I/O) |
| Architecture | SAR |
| Input type | Single-Ended |
| Rating | Catalog |
| Reference mode | Supply |
| Input range (Max) (V) | 5.25 |
| Input range (Min) (V) | 0 |
| Features | Small Size |
| Operating temperature range (C) | -40 to 125 |
| Power consumption (Typ) (mW) | 2 |
| Analog voltage AVDD (Min) (V) | 2.7 |
| SNR (dB) | 72.5 |
| Analog voltage AVDD (Max) (V) | 5.25 |
| INL (Max) (+/-LSB) | 1 |
| Digital supply (Min) (V) | 2.7 |
| Digital supply (Max) (V) | 5.25 |
- Variable Power Management
- Packaged in 6-Pin SOT-23
- Power Supply Used as Reference
- Single 2.7-V to 5.25-V Supply Operation
- Compatible With SPI?, QSPI?, MICROWIRE?,
and DSP - Key Specifications
- Resolution With No Missing Codes (12-Bit, 10-
Bit, and 8-Bit) - Conversion Rate: 1 MSPS
- DNL: 0.5, –0.3 LSB (Typical)
- INL: ±0.4 LSB (Typical)
- Power Consumption:
- 3-V Supply: 2 mW (Typical)
- 5-V Supply: 10 mW (Typical)
- Resolution With No Missing Codes (12-Bit, 10-
The ADCS7476, ADCS7477, and ADCS7478 devices are low power, monolithic CMOS 12-, 10-, and 8-bit analog-to-digital converters that operate at 1 MSPS. The ADCS747x devices are a drop-in replacement for Analog Device?s AD747x. Each device is based on a successive approximation register architecture with internal track-and-hold. The serial interface is compatible with several standards, such as SPI, QSPI, MICROWIRE, and many common DSP serial interfaces.
The ADCS747x uses the supply voltage as a reference, enabling the device to operate with a full-scale input range of 0 to VDD. The conversion rate is determined from the serial clock (SCLK) speed. These converters offer a shutdown mode, which can be used to trade throughput for power consumption. The ADCS747x is operated with a single supply that can range from 2.7 V to 5.25 V. Normal power consumption during continuous conversion, using a 3-V or 5-V supply, is 2 mW or 10 mW respectively. The power-down feature, which is enabled by a chip select (CS) pin, reduces the power consumption to under 5 μW using a 5-V supply. All three converters are available in a 6-pin SOT-23 package, which provides an extremely small footprint for applications where space is a critical consideration. These products are designed for operation over the automotive and extended industrial temperature range of ?40°C to 125°C.
