Overview
The AD7846KPZ-REEL is a 16-bit Digital-to-Analog Converter (DAC) produced by Analog Devices Inc. It is constructed using the LC2MOS process and features a segmented architecture that ensures 16-bit monotonicity. The device includes VREF+ and VREF− reference inputs and an on-chip output amplifier, allowing for both unipolar and bipolar output ranges. The AD7846KPZ-REEL is available in a 28-lead PLCC package and is known for its excellent accuracy specifications and comprehensive microprocessor interface.
Key Specifications
| Parameter | Value | Unit | Test Conditions/Comments |
|---|---|---|---|
| Number of Bits | 16 | - | - |
| Output Type | Voltage - Buffered | - | - |
| Reference Type | External | - | - |
| Voltage - Supply, Analog | ±11.4 V ~ 15.75 V | V | - |
| Voltage - Supply, Digital | 5 V | V | - |
| Operating Temperature | 0°C ~ 70°C | °C | - |
| Settling Time | 9 µs | µs | - |
| INL/DNL (LSB) | ±8 (Max), ±0.5 (Max) | LSB | - |
| Package / Case | 28-PLCC (11.51x11.51) | - | - |
| Mounting Type | Surface Mount | - | - |
Key Features
- 16-Bit Monotonicity: Guaranteed monotonicity over temperature, making it ideal for closed-loop applications.
- Segmented Architecture: Uses a segmented architecture with a 16-resistor string and buffer amplifiers to ensure high resolution and linearity.
- Comprehensive Microprocessor Interface: Includes 16 data I/O pins and control lines (CS, R/W, LDAC, and CLR) for readback and simultaneous updating of DACs.
- Output Configuration: Can be configured for unipolar (0 V to +5 V, 0 V to +10 V) or bipolar (±5 V, ±10 V) output ranges.
- Reset Functionality: CLR line allows resetting the DAC output to 0 V in both unipolar and bipolar configurations.
Applications
The AD7846KPZ-REEL is suitable for various applications requiring high precision and reliability, such as:
- Automated Test Equipment (ATE)
- Medical devices for converting analog signals like blood pressure, EKG readings, and respiration rates into digital signals.
- Closed-loop control systems where monotonicity and accuracy are crucial.
- Industrial control systems that require precise analog output.
Q & A
- What is the resolution of the AD7846KPZ-REEL?
The AD7846KPZ-REEL is a 16-bit DAC. - What types of output ranges can the AD7846KPZ-REEL be configured for?
The device can be configured for unipolar (0 V to +5 V, 0 V to +10 V) or bipolar (±5 V, ±10 V) output ranges. - What is the settling time of the AD7846KPZ-REEL?
The settling time is 9 µs. - What is the operating temperature range of the AD7846KPZ-REEL?
The operating temperature range is 0°C to 70°C. - Does the AD7846KPZ-REEL support readback functionality?
Yes, it supports readback functionality through the R/W and CS control lines. - How can the DAC output be reset?
The DAC output can be reset to 0 V using the CLR line. - What package types are available for the AD7846KPZ-REEL?
The device is available in 28-lead PLCC packages. - Is the AD7846KPZ-REEL RoHS compliant?
Yes, it is lead-free and RoHS compliant. - What is the typical output resistance of the AD7846KPZ-REEL?
The typical output resistance is 0.3 Ω. - What is the maximum short circuit current of the AD7846KPZ-REEL?
The maximum short circuit current is ±25 mA.
