Overview
The AD7845KRZ is a high-performance, single-channel, 12-bit digital-to-analog converter (DAC) produced by Analog Devices Inc. It is the industry’s first 4-quadrant multiplying DAC with an on-chip amplifier, fabricated on the LC2MOS process. This allows for the integration of precision linear components and digital circuitry on the same chip. The device features a parallel data input and is designed for a wide range of industrial, instrumentation, and process control applications.
Key Specifications
| Parameter | Value |
|---|---|
| Resolution | 12 bits |
| Integral and Differential Nonlinearity | ±1 LSB |
| Settling Time | 5 µs to 0.01% of full scale |
| Output Voltage Range | 0 V to +10 V |
| Analog Supply Voltage | ±15 V |
| Digital Supply Voltage | Up to 5 V |
| Output Amplifier Load Capability | ±10 V into a 2 kΩ load |
| Package Type | 24-Lead SOIC (Wide) |
| Operating Temperature Range | 0°C to 70°C |
Key Features
- High-performance 12-bit DAC with 4-quadrant multiplying capability
- On-chip output amplifier with internal compensation and low input offset voltage due to laser trimming
- Parallel data input with TTL and 5 V CMOS compatibility
- R-2R ladder architecture for precise voltage output
- Matched application resistors for gain ranging and voltage offsetting
- Compact 24-SOIC package for space-constrained designs
- Proven reliability and long-term stability
Applications
- Industrial automation and control systems
- Test and measurement equipment
- Process control instrumentation
- Servo motor control
- Data acquisition systems
Q & A
- What is the resolution of the AD7845KRZ?
The AD7845KRZ has a 12-bit resolution.
- What is the output voltage range of the AD7845KRZ?
The output voltage range is 0 V to +10 V.
- What is the settling time of the AD7845KRZ?
The settling time is 5 µs to 0.01% of full scale.
- What are the analog and digital supply voltage ranges for the AD7845KRZ?
The analog supply voltage range is ±15 V, and the digital supply voltage is up to 5 V.
- What is the load capability of the output amplifier?
The output amplifier can supply ±10 V into a 2 kΩ load.
- What package types are available for the AD7845KRZ?
The AD7845KRZ is available in a 24-Lead SOIC (Wide) package.
- What is the operating temperature range of the AD7845KRZ?
The operating temperature range is 0°C to 70°C.
- Is the AD7845KRZ compatible with TTL and CMOS digital inputs?
- What are some typical applications for the AD7845KRZ?
Typical applications include industrial automation, test and measurement equipment, process control instrumentation, servo motor control, and data acquisition systems.
- Is the AD7845KRZ still in active production?
No, the AD7845KRZ is an obsolete product, but there are equivalent or alternative models available from Analog Devices.
