Texas Instruments ADC121S705
The ADC121S705 is a 12-bit, 500 kSPS to 1 MSPS sampling Analog-to-Digital (A/D) converter that features a fully differential, high impedance analog input and an external reference. The reference voltage can be varied from 1.0V to VA, with a corresponding resolution between 244µV and VA divided by 4096. The output serial data is binary 2's complement and is compatible with several standards, such as SPI™, QSPI™, MICROWIRE, and many common DSP serial interfaces.| Part No. | ADC121S705 |
|---|---|
| Datasheet | ADC121S705 Download |
| Manufacturer |  Texas Instruments |
| Description | Micro Power A/D Converter |
| Buy | Stock & Price |
FEATURES
1●2 True Differential Inputs
● Ensured performance from 500 kSPS to 1 MSPS
● External Reference
● Wide Input Common-Mode Voltage Range
● SPI™/QSPI™/MICROWIRE/DSP Compatible Serial Interface
APPLICATIONS
● Automotive Navigation● Portable Systems
● Medical Instruments
● Instrumentation and Control Systems
● Motor Control
● Direct Sensor Interface KEY SPECIFICATIONS
● Conversion Rate: 500 kSPS to 1 MSPS
● INL: ± 0.95 LSB (Max)
● DNL: ±0.95 LSB (Max)
● Offset Error: ±3.0 LSB (Max)
● Gain Error: ±6.5 LSB (Max)
● SINAD: 69.5 db (Min)
● Power Consumption at VA = 5V – Active, 1 MSPS: 11.5 mW (Typ) – Active, 500 kSPS: 9.0 mW (Typ) – Power-Down: 1.5 µW (Typ)
DESCRIPTION
The differential input, low power consumption, and small size make the ADC121S705 ideal for direct connection to transducers in battery operated systems or remote data acquisition applications. Operating from a single 5V supply, the supply current when operating at 1 MSPS is typically 2.3 mA. The supply current drops down to 0.3 µA typically when the ADC121S705 enters power-down mode.
