Overview
The AD7846JP-REEL is a 16-bit Digital-to-Analog Converter (DAC) manufactured by Analog Devices, Inc. It is constructed using the LC2MOS process and features VREF+ and VREF− reference inputs along with an on-chip output amplifier. This DAC is designed to provide high accuracy and reliability, making it suitable for various precision applications. The AD7846JP-REEL can be configured for both unipolar and bipolar output ranges, including 0 V to +5 V, 0 V to +10 V, ±5 V, and ±10 V. It is available in a 28-lead PLCC package and is lead-free and RoHS compliant.
Key Specifications
| Parameter | Value | Unit | Test Conditions/Comments |
|---|---|---|---|
| Number of Bits | 16 | ||
| Output Type | Voltage - Buffered | ||
| Output Range | 0 V to +5 V, 0 V to +10 V, ±5 V, ±10 V | V | Configurable |
| Settling Time | 9 µs | µs | |
| Integral Linearity (INL) | ±8 LSB (max) | LSB | |
| Differential Linearity (DNL) | ±0.5 LSB (max) | LSB | |
| Operating Temperature | 0°C to 70°C | °C | |
| Package Type | 28-Lead PLCC | ||
| Supply Voltage (Digital) | 5 V | V | |
| Supply Voltage (Analog) | ±11.4 V to ±15.75 V | V | |
| Input High Voltage (VIH) | 2.4 V (min) | V | |
| Input Low Voltage (VIL) | 0.8 V (max) | V |
Key Features
- 16-Bit Monotonicity: Guaranteed 16-bit monotonicity over temperature, making it ideal for closed-loop applications.
- Readback Function: Ability to read back the DAC register contents, useful in Automated Test Equipment (ATE) applications.
- Segmented Architecture: Uses a segmented architecture with a 16-resistor string and 12-bit DAC for high resolution and linearity.
- Comprehensive Microprocessor Interface: Includes 16 data I/O pins and control lines (CS, R/W, LDAC, and CLR) for flexible control.
- Simultaneous Updating: LDAC allows simultaneous updating of DACs in multi-DAC systems.
- Reset Function: CLR line resets the DAC latch to zero volts in both unipolar and bipolar configurations.
- Lead-Free and RoHS Compliant: Available in lead-free and RoHS compliant packages.
Applications
- Closed-Loop Systems: Ideal for applications requiring high accuracy and monotonicity, such as control systems and feedback loops.
- Automated Test Equipment (ATE): The readback function is particularly useful in ATE applications for verifying DAC settings.
- Industrial Control Systems: Suitable for precision control in industrial environments.
- Medical Devices: Can be used in medical equipment where high accuracy and reliability are critical.
- Aerospace and Defense: Applicable in various aerospace and defense systems requiring precise analog output.
Q & A
- What is the resolution of the AD7846JP-REEL DAC?
The AD7846JP-REEL is a 16-bit DAC.
- What are the possible output ranges for the AD7846JP-REEL?
The output ranges can be configured to 0 V to +5 V, 0 V to +10 V, ±5 V, or ±10 V.
- What is the settling time of the AD7846JP-REEL?
The settling time is 9 µs.
- What is the operating temperature range of the AD7846JP-REEL?
The operating temperature range is 0°C to 70°C.
- What type of package is the AD7846JP-REEL available in?
The AD7846JP-REEL is available in a 28-Lead PLCC package.
- Is the AD7846JP-REEL lead-free and RoHS compliant?
Yes, it is lead-free and RoHS compliant.
- What is the purpose of the readback function in the AD7846JP-REEL?
The readback function allows reading back the DAC register contents, which is useful in ATE applications.
- How does the LDAC line function in the AD7846JP-REEL?
The LDAC line allows for simultaneous updating of DACs in multi-DAC systems.
- What is the effect of the CLR line in the AD7846JP-REEL?
The CLR line resets the DAC latch to zero volts in both unipolar and bipolar configurations.
- What are some typical applications of the AD7846JP-REEL?
Typical applications include closed-loop systems, ATE, industrial control systems, medical devices, and aerospace and defense systems.
