Overview
The AD7940BRJZ-REEL7 is a 14-bit, fast, and low-power successive approximation analog-to-digital converter (ADC) produced by Analog Devices Inc. This component is notable for its high throughput rate and low power consumption, making it suitable for a variety of applications requiring precise and efficient data conversion. The AD7940 operates from a single 2.50 V to 5.5 V power supply and features a throughput rate of up to 100 kSPS. It is housed in a compact 6-lead SOT-23 package, offering significant space-saving advantages.
Key Specifications
| Parameter | Value |
|---|---|
| Resolution | 14 bits |
| Throughput Rate | Up to 100 kSPS |
| Power Supply | 2.50 V to 5.5 V |
| Power Consumption | Typically 3 mW at 100 kSPS |
| Package Type | 6-Lead SOT-23 |
| Operating Temperature Range | -40°C to +85°C |
| Analog Input Range | 0 V to VDD |
| Serial Clock Frequency | Up to 2.5 MHz |
| Full Power-Down Mode Current | 0.5 µA max at VDD = 5.5 V, 0.3 µA max at VDD = 3.6 V |
Key Features
- High throughput rate of up to 100 kSPS with low power consumption.
- Compact 6-lead SOT-23 package, offering significant space-saving advantages.
- Single-supply operation from 2.50 V to 5.5 V.
- On-chip track-and-hold amplifier capable of handling input frequencies in excess of 7 MHz.
- Serial interface for easy integration with microprocessors or DSPs.
- No pipelined delays associated with the conversion process.
- Internal reference taken from VDD, allowing the widest dynamic input range.
Applications
- Industrial automation and control systems.
- Medical devices requiring precise data conversion.
- Aerospace and defense applications where space and power efficiency are critical.
- Automotive systems, including sensor interfaces and data acquisition.
- Consumer electronics, such as audio and video processing.
Q & A
- What is the resolution of the AD7940 ADC?
The AD7940 has a resolution of 14 bits.
- What is the maximum throughput rate of the AD7940?
The maximum throughput rate is up to 100 kSPS.
- What is the power supply range for the AD7940?
The AD7940 operates from a single 2.50 V to 5.5 V power supply.
- What type of package does the AD7940 come in?
The AD7940 is housed in a 6-lead SOT-23 package.
- What is the operating temperature range of the AD7940?
The operating temperature range is -40°C to +85°C.
- How is the analog input range defined for the AD7940?
The analog input range is from 0 V to VDD.
- What is the maximum serial clock frequency for the AD7940?
The maximum serial clock frequency is up to 2.5 MHz.
- Does the AD7940 have any pipelined delays?
No, there are no pipelined delays associated with the AD7940.
- How does the AD7940 manage power consumption in full power-down mode?
In full power-down mode, the current consumption is 0.5 µA max at VDD = 5.5 V and 0.3 µA max at VDD = 3.6 V.
- What kind of amplifier does the AD7940 contain?
The AD7940 contains a low noise, wide bandwidth track-and-hold amplifier.
