Overview
The AD7921ARMZ-REEL7, produced by Analog Devices Inc., is a 12-bit, high-speed, low-power, 2-channel successive approximation analog-to-digital converter (ADC). This component operates from a single power supply ranging from 2.35 V to 5.25 V and features throughput rates of up to 250 kSPS. It is designed for applications requiring high speed and low power consumption, making it suitable for a variety of electronic systems.
Key Specifications
| Parameter | Value | Unit | Test Conditions/Comments |
|---|---|---|---|
| Conversion Rate | 250 kSPS | - | Maximum throughput rate |
| Conversion Time | 3.2 μs | - | 16 SCLK cycles with SCLK at 5 MHz |
| Track-and-Hold Acquisition Time | 290 ns | - | Maximum |
| Power Supply (VDD) | 2.35 V to 5.25 V | V | Minimum to maximum operating voltage |
| Power Consumption (Normal Mode) | 4 mA (typ) at 3 V, 13.5 mA (typ) at 5 V | mA | At fSAMPLE = 250 kSPS |
| Power Consumption (Full Power-Down Mode) | 1 μA (max) | μA | Static mode |
| Input Bandwidth | Exceeds 6 MHz | - | - |
| Package Type | 8-Lead MSOP | - | - |
| Operating Temperature | -40°C to +85°C | °C | - |
Key Features
- Fast throughput rate of up to 250 kSPS
- Low power consumption: 4 mW typical at 250 kSPS with 3 V supplies and 13.5 mW typical at 250 kSPS with 5 V supplies
- Wide input bandwidth: exceeds 6 MHz
- No pipeline delays
- High-speed serial interface compatible with SPI, QSPI, MICROWIRE, and DSP
- Flexible power and serial clock speed management
- Standby mode with a maximum current of 1 μA
Applications
- Battery-powered systems
- Personal digital assistants
- Medical instruments
- Mobile communications
- Instrumentation and control systems
- Data acquisition systems
- High-speed modems
- Optical sensors
Q & A
- What is the maximum throughput rate of the AD7921ARMZ-REEL7?
The maximum throughput rate is 250 kSPS. - What is the operating voltage range for the AD7921ARMZ-REEL7?
The operating voltage range is from 2.35 V to 5.25 V. - What is the typical power consumption of the AD7921ARMZ-REEL7 at 250 kSPS with a 3 V supply?
The typical power consumption is 4 mW. - Does the AD7921ARMZ-REEL7 have pipeline delays?
No, there are no pipeline delays associated with this part. - What types of interfaces is the AD7921ARMZ-REEL7 compatible with?
The AD7921ARMZ-REEL7 is compatible with SPI, QSPI, MICROWIRE, and DSP interfaces. - What is the maximum current in standby mode?
The maximum current in standby mode is 1 μA. - What is the input bandwidth of the AD7921ARMZ-REEL7?
The input bandwidth exceeds 6 MHz. - In what package types is the AD7921ARMZ-REEL7 available?
The AD7921ARMZ-REEL7 is available in 8-Lead MSOP and 8-Lead TSOT packages. - What is the operating temperature range for the AD7921ARMZ-REEL7?
The operating temperature range is from -40°C to +85°C. - How is the conversion process controlled in the AD7921ARMZ-REEL7?
The conversion process is controlled using the CS and the serial clock, allowing the device to interface with microprocessors or DSPs.
