Overview
The ADS8332IPWR from Texas Instruments is a low-power, 16-bit, 500-k samples-per-second (SPS) analog-to-digital converter (ADC) designed for high-performance applications. This device features an 8-channel multiplexer and is part of the ADS833x series, which includes the ADS8331 with a 4-channel multiplexer. The ADS8332 is powered by a flexible supply range of 2.7V to 5.5V and is known for its excellent DC and AC performance, making it suitable for a wide range of industrial and precision measurement applications.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Analog Supply Voltage | 2.7 to 5.5 | V |
| Sampling Rate | Up to 500 kSPS | |
| Resolution | 16 Bits | |
| Integral Linearity (INL) | ±1.2 LSB (Typical), ±2 LSB (Maximum) | LSB |
| Differential Linearity (DNL) | ±0.6 LSB (Typical), –1/1.5 LSB (Maximum) | LSB |
| Signal-to-Noise Ratio (SNR) | 91.5 dB at fIN = 1 kHz | dB |
| Spurious-Free Dynamic Range (SFDR) | 101 dB at fIN = 1 kHz | dB |
| Total Harmonic Distortion (THD) | –100 dB at fIN = 1 kHz | dB |
| Power Consumption | 8.7 mW (250 kSPS in Auto-NAP Mode), 14.2 mW (500 kSPS) | mW |
| Operating Temperature Range | –40°C to 85°C | °C |
| Package Types | 24-Pin 4-mm × 4-mm VQFN, 24-Pin TSSOP |
Key Features
- Low-power operation with flexible supply range (2.7V to 5.5V)
- High-speed serial interface compatible with SPI™/DSP, up to 40 MHz SCLK
- On-chip 8-channel multiplexer with breakout and auto/manual channel select and trigger
- On-chip conversion clock (CCLK) and software/hardware reset
- Programmable status/polarity EOC/INT and daisy-chain mode
- Deep, Nap, and Auto-NAP powerdown modes for power efficiency
- Separate I/O supply: 1.65 V to VA
- Excellent DC and AC performance, including high SNR, SFDR, and low THD
Applications
- Industrial automation and control systems
- Precision measurement instruments
- Medical devices requiring high accuracy and low power consumption
- Aerospace and defense applications where reliability and performance are critical
- Automotive systems, including sensor interfaces and data acquisition
- Test and measurement equipment
Q & A
- What is the sampling rate of the ADS8332?
The ADS8332 has a sampling rate of up to 500 kSPS.
- What is the resolution of the ADS8332?
The ADS8332 has a resolution of 16 bits.
- What is the power consumption of the ADS8332 at different sampling rates?
The power consumption is 8.7 mW at 250 kSPS in Auto-NAP mode and 14.2 mW at 500 kSPS.
- What are the package types available for the ADS8332?
The ADS8332 is available in 24-Pin 4-mm × 4-mm VQFN and 24-Pin TSSOP packages.
- What is the operating temperature range of the ADS8332?
The operating temperature range is –40°C to 85°C.
- Does the ADS8332 support daisy-chain operation?
Yes, the ADS8332 supports daisy-chain operation when multiple converters are used.
- What is the signal-to-noise ratio (SNR) of the ADS8332 at 1 kHz input frequency?
The SNR is 91.5 dB at fIN = 1 kHz.
- What are the powerdown modes available on the ADS8332?
The ADS8332 has Deep, Nap, and Auto-NAP powerdown modes for power efficiency.
- Is the ADS8332 compatible with SPI™/DSP interfaces?
Yes, the ADS8332 is compatible with SPI™/DSP interfaces and supports up to 40 MHz SCLK.
- What is the typical integral linearity (INL) of the ADS8332?
The typical INL is ±1.2 LSB.
