Overview
The AD7923SRU-EP is a high-performance, 12-bit, successive approximation (SAR) analog-to-digital converter (ADC) manufactured by Analog Devices Inc. This device is designed for applications requiring low power consumption and high throughput rates. It operates from a single 2.7 V to 5.25 V power supply and features four single-ended analog input channels with a channel sequencer, allowing for preprogrammed selection of channels to be converted sequentially. The AD7923SRU-EP is particularly suited for defense and aerospace applications due to its compliance with AQEC standards and its military temperature range of −55°C to +125°C.
Key Specifications
| Parameter | Value |
|---|---|
| Number of Bits | 12 |
| Number of Inputs | 4 |
| Input Type | Single Ended |
| Sampling Rate (Per Second) | 200 kSPS |
| Voltage - Supply, Analog/Digital | 2.7 V ~ 5.25 V |
| Package/Case | 16-TSSOP (0.173", 4.40mm Width) |
| Operating Temperature | −55°C to +125°C |
| Data Interface | SPI, DSP |
| Architecture | SAR (Successive Approximation) |
| Reference Type | External |
| Power Consumption (Max) | 1.2 mA @ 3 V, 1.5 mA @ 5 V |
| Shutdown Current | 0.5 μA (Max) |
Key Features
- High throughput rates up to 200 kSPS with low power consumption.
- Four single-ended analog input channels with a channel sequencer for sequential conversion.
- Single-supply operation with VDRIVE function, allowing direct connection to 3 V or 5 V processor systems.
- Flexible power and serial clock speed management, reducing conversion time through increased serial clock speed.
- Shutdown mode with maximum current consumption of 0.5 μA.
- Supports SPI, DSP, QSPI, and MICROWIRE serial interfaces.
- No pipeline delays and high-speed serial interface.
- Low noise, wide bandwidth track-and-hold amplifier capable of handling input frequencies over 8 MHz.
Applications
- Aerospace and defense applications.
- Milcom and avionics systems.
- Unmanned systems.
- Any application requiring high-speed, low-power analog-to-digital conversion with robust temperature stability.
Q & A
- What is the AD7923SRU-EP?
The AD7923SRU-EP is a 12-bit, successive approximation (SAR) analog-to-digital converter (ADC) with four single-ended analog input channels and a channel sequencer.
- What is the operating voltage range of the AD7923SRU-EP?
The device operates from a single 2.7 V to 5.25 V power supply.
- What is the maximum sampling rate of the AD7923SRU-EP?
The maximum sampling rate is up to 200 kSPS.
- What type of package does the AD7923SRU-EP come in?
The device is packaged in a 16-TSSOP (0.173", 4.40mm Width).
- What are the key features of the AD7923SRU-EP's serial interface?
The device supports SPI, DSP, QSPI, and MICROWIRE serial interfaces and has no pipeline delays.
- What is the power consumption of the AD7923SRU-EP 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 shutdown current of the AD7923SRU-EP?
The shutdown current is 0.5 μA maximum.
- What are the typical applications of the AD7923SRU-EP?
The device is typically used in aerospace, defense, milcom, avionics, and unmanned systems.
- Is the AD7923SRU-EP RoHS compliant?
No, the AD7923SRU-EP is not RoHS compliant.
- What is the operating temperature range of the AD7923SRU-EP?
The operating temperature range is −55°C to +125°C.
