Overview
The AD7871KPZ is a 14-bit analog-to-digital converter (ADC) produced by Analog Devices Inc. This device is part of the AD7871 series, which includes fast, complete, sampling ADCs. The AD7871KPZ features a track-and-hold amplifier, a successive approximation ADC, a 3 V buried Zener reference, and versatile interface logic. It operates from ±5 V power supplies and can accept bipolar input signals of ±3 V, converting full power signals up to 41.5 kHz. The device is fabricated in Analog Devices' LC2MOS mixed technology process and is available in a 28-pin PLCC package.
Key Specifications
| Parameter | Value |
|---|---|
| Number of Bits | 14 |
| Input Signal Range | ±3 V |
| Power Supplies | ±5 V ± 5% |
| Conversion Rate | Up to 41.5 kHz |
| Package Type | 28-pin PLCC |
| Operating Temperature Range | 0°C to +70°C |
| Data Output Formats | Single 14-bit word, two 8-bit bytes, or 14-bit serial data stream |
| Internal Reference | 3 V buried Zener reference |
| Track-and-Hold Amplifier Acquisition Time | Less than 2 μs |
| Throughput Time | Maximum 12 μs |
Key Features
- Self-contained, laser-trimmed internal clock, eliminating the need for external clock timing components.
- Option to override the internal clock to synchronize ADC operation with the digital system for minimal noise.
- Three data output formats: single 14-bit word, two 8-bit bytes, or a 14-bit serial data stream.
- High-speed track-and-hold amplifier with an input bandwidth greater than the Nyquist rate of the ADC.
- Internal 3 V buried Zener reference, factory-trimmed for accuracy.
- Dynamic performance specifications including distortion and signal-to-noise ratio.
- Compatibility with all modern microprocessors and digital signal processors.
Applications
- Data acquisition systems requiring high accuracy and speed.
- Industrial control systems where precise analog-to-digital conversion is necessary.
- Medical devices that require accurate signal processing.
- Aerospace and defense applications where reliability and performance are critical.
- Automotive systems that need robust and accurate ADCs.
Q & A
- What is the resolution of the AD7871KPZ ADC?
The AD7871KPZ is a 14-bit analog-to-digital converter.
- What are the power supply requirements for the AD7871KPZ?
The device operates from ±5 V power supplies.
- What are the available data output formats for the AD7871KPZ?
The device offers three data output formats: a single 14-bit word, two 8-bit bytes, or a 14-bit serial data stream.
- What is the maximum conversion rate of the AD7871KPZ?
The device can convert full power signals up to 41.5 kHz.
- What type of package is the AD7871KPZ available in?
The device is available in a 28-pin PLCC package.
- Does the AD7871KPZ have an internal clock?
Yes, the device has a self-contained, laser-trimmed internal clock.
- Can the internal clock be overridden?
Yes, the internal clock can be overridden to synchronize ADC operation with the digital system.
- What is the operating temperature range of the AD7871KPZ?
The device operates from 0°C to +70°C.
- What is the input signal range for the AD7871KPZ?
The device accepts bipolar input signals of ±3 V.
- How long does the track-and-hold amplifier take to acquire an input signal?
The track-and-hold amplifier acquires an input signal to 14-bit accuracy in less than 2 μs.
- What is the maximum throughput time for the AD7871KPZ?
The maximum throughput time is 12 μs.
