ADC12138是TI公司的一款精密ADC(<=10MSPS)产品，ADC12138是具有 MUX 和采样/保持功能的自校准 12 位 + 串行 I/O A/D 转换器，本页介绍了ADC12138的产品说明、应用、特性等，并给出了与ADC12138相关的TI元器件型号供参考。
ADC12138 - 具有 MUX 和采样/保持功能的自校准 12 位 + 串行 I/O A/D 转换器 - 精密ADC(<=10MSPS) - 模数转换器 - TI公司（Texas Instruments，德州仪器）
NOTE: Some device/package combinations are obsolete and are described and shown here for reference only. See our web site for product availability.
The ADC12130, ADC12132 and ADC12138 are 12-bit plus sign successive approximation Analog-to-Digital converters with serial I/O and configurable input multiplexer. The ADC12132 and ADC12138 have a 2 and an 8 channel multiplexer, respectively. The differential multiplexer outputs and ADC inputs are available on the MUXOUT1, MUXOUT2, A/DIN1 and A/DIN2 pins. The ADC12130 has a two channel multiplexer with the multiplexer outputs and ADC inputs internally connected. The ADC12130 family is tested and specified with a 5MHz clock. On request, these ADCs go through a self calibration process that adjusts linearity, zero and full-scale errors to typically less than ±1 LSB each.
The analog inputs can be configured to operate in various combinations of single-ended, differential, or pseudo-differential modes. A fully differential unipolar analog input range (0V to +5V) can be accommodated with a single +5V supply. In the differential modes, valid outputs are obtained even when the negative inputs are greater than the positive because of the 12-bit plus sign output data format.
The serial I/O is configured to comply with NSC MICROWIRE. For voltage references, see the LM4040, LM4050 or LM4041.
- Serial I/O (MICROWIRE, SPI and QSPI Compatible)
- Power Down Mode
- Programmable Acquisition Time
- Variable Digital Output Word Length and Format
- No Zero or Full Scale Adjustment Required
- 0V to 5V Analog Input Range with Single 5V Power Supply
Key Specifications
- Resolution 12-bit plus sign
- 12-Bit plus sign conversion time 8.8 μs (max)
- 12-Bit plus sign throughput time 14 μs (max)
- Integral Linearity Error ±2 LSB (max)
- Single Supply 3.3V or 5V ±10%
- Power Consumption
- +3.3V 15 mW (max)
- +3.3V power down 40 μW (typ)
- +5V 33 mW (max)
- +5V power down 100 μW (typ)
