Overview
The AD7845JRZ is a 12-bit multiplying digital-to-analog converter (DAC) produced by Analog Devices Inc. It is notable for its integration of an on-chip output amplifier, making it a space-saving solution for various applications. Fabricated using the LC2MOS process, this DAC combines precision linear components and digital circuitry on a single chip. The device is available in several package options, including 24-lead 0.3" DIP, 28-terminal LCC and PLCC, and 24-terminal SOIC packages.
Key Specifications
| Parameter | Value | Units | Comments |
|---|---|---|---|
| Number of Bits | 12 | - | - |
| Settling Time | 5 µs | - | To 0.01% FSR (1/2 LSB) |
| Output Type | Voltage - Buffered | - | - |
| Differential Output | No | - | - |
| Data Interface | Parallel | - | - |
| Reference Type | External | - | - |
| Voltage - Supply, Analog | ±14.25 V ~ 15.75 V | V | - |
| INL/DNL (LSB) | ±1 (Max), ±1 (Max) | LSB | - |
| Architecture | R-2R | - | - |
| Operating Temperature | 0°C ~ 70°C | °C | - |
| Output Amplifier Slew Rate | Typically 11 V/µs | V/µs | - |
| Output Amplifier Load Capability | ±10 V into a 2 kΩ load | V | - |
Key Features
- 12-bit CMOS MDAC with an on-chip output amplifier
- 4-quadrant multiplication capability
- Guaranteed monotonicity over the full temperature range
- Space-saving packages: 0.3" DIP, 28-terminal LCC and PLCC, and 24-terminal SOIC
- Application resistors on chip for gain ranging
- Low power consumption using the LC2MOS process
- All digital inputs are TTL and 5 V CMOS compatible
- Internally compensated output amplifier with low input offset voltage due to laser trimming
Applications
- Automatic Test Equipment (ATE)
- Digital Attenuators
- Programmable Power Supplies
- Programmable Gain Amplifiers
- Digital-to-4–20 mA Converters
Q & A
- What is the resolution of the AD7845JRZ DAC?
The AD7845JRZ has a 12-bit resolution.
- What is the settling time of the AD7845JRZ?
The settling time is typically 5 µs to 0.01% FSR (1/2 LSB).
- What type of output does the AD7845JRZ provide?
The AD7845JRZ provides a buffered voltage output.
- Is the AD7845JRZ compatible with TTL and CMOS inputs?
- What is the maximum output voltage range of the AD7845JRZ?
The output amplifier can supply ±10 V into a 2 kΩ load.
- What is the slew rate of the output amplifier?
The slew rate of the output amplifier is typically 11 V/µs.
- What are the common applications of the AD7845JRZ?
- What is the operating temperature range of the AD7845JRZ?
- How is the output voltage range scaled in the AD7845JRZ?
- What is the architecture of the AD7845JRZ DAC?
