Overview
The ADS8862IDRCR is a 16-bit, 680-kSPS, single-ended input, analog-to-digital converter (ADC) produced by Texas Instruments. This device is part of the microPOWER™ family and is designed for high-performance and low-power operation. It features a successive approximation register (SAR) architecture with an internal sample-and-hold (S/H) function, making it suitable for a wide range of applications requiring precise analog-to-digital conversion.
The ADS8862 operates with a 2.5-V to 5-V external reference voltage, which is independent of the analog supply voltage (AVDD), allowing for a wide selection of signal ranges without additional input signal scaling. The device supports SPI-compatible serial interface with daisy-chain option, facilitating easy interfacing with digital hosts such as microprocessors, digital signal processors (DSPs), or field-programmable gate arrays (FPGAs).
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Resolution | 16 | Bits |
| Sampling Rate | 680 | kSPS |
| Input Type | Single-Ended, Pseudo-Differential | |
| Input Range | 0 to +VREF | V |
| Reference Voltage | 2.5 to 5 | V |
| Analog Supply Voltage (AVDD) | 2.7 to 3.6 | V |
| Digital Supply Voltage (DVDD) | 1.65 to 3.6 | V |
| Operating Temperature | -40 to +85 | °C |
| Power Consumption at 680 kSPS | 4.2 | mW |
| Power Consumption at 100 kSPS | 0.6 | mW |
| Power Consumption at 10 kSPS | 60 | µW |
| Power-Down Current (AVDD) | 50 | nA |
| Conversion Time | 500 to 930 | ns |
| Acquisition Time | 540 | ns |
| Aperture Delay | 4 | ns |
| Aperture Jitter, RMS | 5 | ps |
| Package | VSSOP-10, VSON-10 |
Key Features
- High-Speed Conversion: Sample rate of up to 680 kHz.
- No Latency Output: Ensures real-time data availability.
- Unipolar, Single-Ended Input: Input range from 0 to +VREF.
- SPI-Compatible Serial Interface: Supports daisy-chain operation for cascading multiple devices.
- Excellent AC and DC Performance: SNR of 93 dB, THD of –108 dB, INL of ±1.0 LSB (typ), and DNL of ±1.0 LSB (max).
- Wide Operating Range: AVDD from 2.7 V to 3.6 V, DVDD from 1.65 V to 3.6 V, and REF from 2.5 V to 5 V.
- Low-Power Dissipation: Power consumption scales linearly with sampling speed, making it suitable for low-power applications.
- Compact Packaging: Available in VSSOP-10 and VSON-10 packages.
Applications
- Automatic Test Equipment (ATE): Ideal for high-speed data acquisition.
- Instrumentation and Process Controls: Suitable for precise measurement and control applications.
- Precision Medical Equipment: Used in medical devices requiring high accuracy and low power consumption.
- Low-Power, Battery-Operated Instruments: Optimized for devices that need to conserve power.
Q & A
- What is the resolution of the ADS8862 ADC?
The ADS8862 has a resolution of 16 bits.
- What is the maximum sampling rate of the ADS8862?
The maximum sampling rate is 680 kSPS.
- What type of input does the ADS8862 support?
The ADS8862 supports unipolar, single-ended analog inputs.
- What is the range of the external reference voltage for the ADS8862?
The external reference voltage range is from 2.5 V to 5 V.
- What are the operating temperature ranges for the ADS8862?
The operating temperature range is from -40°C to +85°C.
- How does the power consumption of the ADS8862 scale with sampling speed?
The power consumption scales linearly with the sampling speed.
- What is the power-down current of the ADS8862?
The power-down current is 50 nA.
- What is the conversion time of the ADS8862?
The conversion time ranges from 500 ns to 930 ns.
- Does the ADS8862 support daisy-chain operation?
- In what packages is the ADS8862 available?
The ADS8862 is available in VSSOP-10 and VSON-10 packages.
