Overview
The AD7538KR 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. The AD7538KR is designed to be speed compatible with most microprocessors and accepts TTL or CMOS logic level inputs. It features a single DAC architecture with an R-2R resistor ladder, ensuring high-resolution performance and low noise. The device is available in a 24-pin SOIC package and supports double buffering, which allows for simultaneous updates in systems with multiple AD7538s.
Key Specifications
| Parameter | Value |
|---|---|
| Number of Bits | 14 |
| Number of D/A Converters | 1 |
| Settling Time | 1.5µs |
| Output Type | Current - Unbuffered |
| Differential Output | No |
| Data Interface | Parallel |
| Reference Type | External |
| Voltage - Supply, Analog | 11.4V ~ 15.75V |
| Voltage - Supply, Digital | 11.4V ~ 15.75V |
| INL/DNL (LSB) | ±1 (Max), ±1 (Max) |
| Architecture | R-2R |
| Operating Temperature | 0°C ~ 70°C |
| Package | 24-SOIC |
| Mounting Type | Surface Mount |
Key Features
- 14-bit resolution with R-2R resistor ladder architecture
- Single DAC architecture for high-resolution performance and low noise
- Double buffering capability using LDAC for simultaneous updates in multiple AD7538s
- Low output leakage current configuration
- Guaranteed monotonicity to 14 bits over the full temperature range
- Speed compatible with most microprocessors and accepts TTL or CMOS logic level inputs
- Wide power supply tolerance: +12 V to +15 V with ±5% tolerance
Applications
- Industrial data acquisition systems
- Medical equipment
- Automotive electronics
- Digital audio and precision servo control
- Control and measurement in high-temperature environments
Q & A
- What is the resolution of the AD7538KR DAC?
The AD7538KR has a 14-bit resolution.
- What type of architecture does the AD7538KR use?
The AD7538KR uses an R-2R resistor ladder architecture.
- What is the settling time of the AD7538KR?
The settling time of the AD7538KR is 1.5µs.
- Does the AD7538KR support double buffering?
Yes, the AD7538KR supports double buffering using the LDAC pin.
- What is the operating temperature range of the AD7538KR?
The operating temperature range is 0°C to 70°C.
- What type of package is the AD7538KR available in?
The AD7538KR is available in a 24-pin SOIC package.
- Is the AD7538KR compatible with microprocessors?
Yes, it is speed compatible with most microprocessors and accepts TTL or CMOS logic level inputs.
- What is the power supply voltage range for the AD7538KR?
The power supply voltage range is +12 V to +15 V with a ±5% tolerance.
- Does the AD7538KR have differential output?
No, the AD7538KR does not have differential output.
- What type of data interface does the AD7538KR use?
The AD7538KR uses a parallel data interface.
