Overview
The AD7923SRUZ-EP is a high-performance, 12-bit, 4-channel successive approximation (SAR) analog-to-digital converter (ADC) produced by Analog Devices Inc. This device is designed to operate in harsh environments, making it suitable for defense and aerospace applications that adhere to the AQEC standard. It features a wide operating temperature range of -55°C to +125°C and is packaged in a 16-lead Thin Shrink Small Outline (TSSOP) package. The AD7923-EP is known for its low power consumption and high-speed conversion capabilities, making it an ideal choice for various high-reliability applications.
Key Specifications
| Parameter | Value |
|---|---|
| Resolution | 12 bits |
| Number of Channels | 4 single-ended analog inputs |
| Throughput Rate | Up to 200 kSPS |
| Power Supply Range | 2.7 V to 5.25 V |
| Power Consumption | 1.2 mA max at 3 V, 1.5 mA max at 5 V |
| Operating Temperature Range | -55°C to +125°C |
| Package Type | 16-lead TSSOP |
| Input Frequency Range | Up to 8 MHz |
| Serial Interface | SPI-/QSPI-/MICROWIRE-/DSP-compatible |
| Shutdown Current | 0.5 μA max |
Key Features
- High-speed serial interface compatible with SPI, QSPI, MICROWIRE, and DSP.
- Low noise, wide bandwidth track-and-hold amplifier.
- Flexible power and serial clock speed management.
- No pipeline delays.
- Shutdown mode with 0.5 μA maximum current.
- Channel sequencer for preprogrammed selection of channels.
- Configuration of the control register allows selection of analog input range (0 V to REFIN or 0 V to 2 × REFIN) and output coding (straight binary or twos complement).
Applications
- Aerospace and defense.
- Milcom and avionics.
- Unmanned systems.
Q & A
- What is the resolution of the AD7923-EP ADC?
The AD7923-EP has a resolution of 12 bits. - How many analog input channels does the AD7923-EP have?
The AD7923-EP features four single-ended analog input channels. - What is the maximum throughput rate of the AD7923-EP?
The maximum throughput rate is up to 200 kSPS. - What is the operating temperature range of the AD7923-EP?
The operating temperature range is -55°C to +125°C. - What type of package does the AD7923-EP come in?
The AD7923-EP is packaged in a 16-lead TSSOP. - How much power does the AD7923-EP consume at maximum throughput rates?
At maximum throughput rates, it consumes 1.2 mA maximum with 3 V supplies and 1.5 mA maximum with 5 V supplies. - What is the input frequency range that the track-and-hold amplifier can handle?
The track-and-hold amplifier can handle input frequencies in excess of 8 MHz. - Is the AD7923-EP compatible with microprocessors or DSPs?
Yes, the AD7923-EP is designed to easily interface with microprocessors or DSPs through its serial clock and CS signals. - What is the shutdown current of the AD7923-EP?
The shutdown current is 0.5 μA maximum. - Can the analog input range be configured on the AD7923-EP?
Yes, the analog input range can be selected as 0 V to REFIN or 0 V to 2 × REFIN through the configuration of the control register.
