Overview
The ADS8664IDBTR, produced by Texas Instruments, is a 12-bit successive approximation (SAR) analog-to-digital converter (ADC) integrated into a 4-channel data acquisition system. This device operates at an aggregate throughput of 500 kSPS and features integrated analog front-end circuitry for each input channel. It is designed to support a wide range of applications requiring high precision and reliability, particularly in industrial settings. The ADS8664IDBTR is housed in a 38-pin TSSOP (DBT) package and operates over an industrial temperature range of –40°C to 125°C.
Key Specifications
| Parameter | Value |
|---|---|
| Resolution | 12 bits |
| Number of Channels | 4 channels |
| Throughput | 500 kSPS |
| Analog Supply Voltage | 5 V |
| Digital Supply Voltage | 1.65 V to 5.25 V |
| Input Ranges | ±10.24 V, ±5.12 V, ±2.56 V, ±1.28 V, ±0.64 V (bipolar); 0 V to 10.24 V, 0 V to 5.12 V, 0 V to 2.56 V, 0 V to 1.28 V (unipolar) |
| Input Impedance | 1 MΩ |
| Overvoltage Protection | Up to ±20 V |
| On-Chip Reference Voltage | 4.096 V with low temperature drift |
| DNL/INL | ±0.2 LSB |
| SNR/THD | 73.8 dB / –95 dB |
| Power Consumption | 65 mW |
| Package Type | TSSOP-38 (9.7 mm × 4.4 mm) |
| Operating Temperature Range | –40°C to 125°C |
Key Features
- 12-bit SAR ADC with integrated analog front-end circuitry for each input channel.
- 4-channel multiplexer with automatic and manual scanning modes.
- Channel-independent programmable inputs with various bipolar and unipolar ranges.
- Constant resistive input impedance of 1 MΩ.
- Input overvoltage protection up to ±20 V.
- On-chip, 4.096-V reference with low temperature drift.
- Excellent performance metrics: DNL/INL ±0.2 LSB, SNR 73.8 dB, THD –95 dB.
- Low power consumption of 65 mW.
- AUX input for direct connection to ADC inputs and ALARM with high and low thresholds per channel.
- SPI-compatible interface with daisy-chain capability.
Applications
The ADS8664IDBTR is suitable for a variety of applications requiring precise and reliable analog-to-digital conversion, including:
- Industrial automation and control systems.
- Medical devices and diagnostic equipment.
- Aerospace and defense systems.
- Automotive systems, particularly those requiring high precision and reliability.
- Test and measurement instruments.
Q & A
- What is the resolution of the ADS8664IDBTR?
The ADS8664IDBTR has a resolution of 12 bits.
- How many channels does the ADS8664IDBTR support?
The ADS8664IDBTR supports 4 channels.
- What is the throughput of the ADS8664IDBTR?
The throughput of the ADS8664IDBTR is 500 kSPS.
- What are the input voltage ranges supported by the ADS8664IDBTR?
The device supports both bipolar and unipolar input ranges: ±10.24 V, ±5.12 V, ±2.56 V, ±1.28 V, ±0.64 V (bipolar); 0 V to 10.24 V, 0 V to 5.12 V, 0 V to 2.56 V, 0 V to 1.28 V (unipolar).
- What is the input impedance of the ADS8664IDBTR?
The input impedance is 1 MΩ.
- Does the ADS8664IDBTR have overvoltage protection?
- What is the on-chip reference voltage of the ADS8664IDBTR?
The on-chip reference voltage is 4.096 V with low temperature drift.
- What are the DNL and INL specifications of the ADS8664IDBTR?
The DNL and INL are ±0.2 LSB.
- What is the power consumption of the ADS8664IDBTR?
The power consumption is 65 mW.
- What type of interface does the ADS8664IDBTR use?
The device uses an SPI-compatible interface with daisy-chain capability.
