Overview
The AD7538KRZ is a 14-bit monolithic CMOS digital-to-analog converter (DAC) produced by Analog Devices Inc. This device utilizes laser-trimmed thin-film resistors to achieve excellent linearity and is manufactured using the linear-compatible CMOS (LC2MOS) process. It is designed to be speed compatible with most microprocessors and accepts TTL or CMOS logic level inputs. The AD7538KRZ features double buffering, allowing simultaneous updates in systems with multiple DACs, and exhibits low output leakage current characteristics over the specified temperature range.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Number of Bits | 14 | |
| Number of D/A Converters | 1 | |
| Package / Case | 24-SOIC (0.295", 7.50mm Width) | |
| Settling Time | 1.5µs | |
| Output Type | Current - Unbuffered | |
| Differential Output | No | |
| Data Interface | Parallel | |
| Reference Type | External | |
| Voltage - Supply, Analog | 11.4 V ~ 15.75 V | |
| Voltage - Supply, Digital | 11.4 V ~ 15.75 V | |
| INL/DNL (LSB) | ±1 (Max), ±1 (Max) | |
| Architecture | R-2R | |
| Operating Temperature | 0°C ~ 70°C | |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) |
Key Features
- Guaranteed Monotonicity: The AD7538KRZ is guaranteed monotonic to 14 bits over the full temperature range for all grades.
- Low Cost: Offers a low-cost solution for 12-bit system upgrades with its 14-bit dynamic range.
- Small Package Size: Available in a small 24-pin SOIC package.
- Low Output Leakage: Exhibits excellent output leakage current characteristics, especially when VSS is tied to a negative voltage.
- Wide Power Supply Tolerance: Operates on a +12 V to +15 V VDD with a ±5% tolerance.
- Double Buffering: Allows simultaneous updates in systems containing multiple AD7538s using the LDAC pin.
Applications
- Digital Audio: Suitable for applications requiring high precision and linearity in digital audio systems.
- Precision Servo Control: Used in precision servo control systems where accurate and stable analog outputs are necessary.
- Control and Measurement in High Temperature Environments: Operates effectively in high temperature environments, making it suitable for various industrial and automotive applications.
Q & A
- What is the resolution of the AD7538KRZ DAC?
The AD7538KRZ is a 14-bit digital-to-analog converter.
- What is the package type of the AD7538KRZ?
The AD7538KRZ is available in a 24-SOIC package.
- What is the settling time of the AD7538KRZ?
The settling time of the AD7538KRZ is 1.5µs.
- Does the AD7538KRZ support double buffering?
Yes, the AD7538KRZ supports double buffering using the LDAC pin.
- What is the operating temperature range of the AD7538KRZ?
The operating temperature range is from 0°C to 70°C.
- Is the AD7538KRZ RoHS compliant?
Yes, the AD7538KRZ is RoHS compliant.
- What is the architecture of the AD7538KRZ DAC?
The AD7538KRZ uses an R-2R architecture.
- What is the maximum INL/DNL for the AD7538KRZ?
The maximum INL/DNL is ±1 LSB.
- Can the AD7538KRZ be used in high temperature environments?
Yes, it is suitable for use in high temperature environments due to its low output leakage current characteristics.
- What is the power supply voltage range for the AD7538KRZ?
The power supply voltage range is from 11.4 V to 15.75 V for both analog and digital supplies.
