Overview
The AD670JNZ is a comprehensive 8-bit signal conditioning analog-to-digital converter (ADC) produced by Analog Devices Inc. This device integrates an instrumentation amplifier front end, a DAC, comparator, successive approximation register (SAR), precision voltage reference, and a three-state output buffer on a single monolithic chip. It is designed to interface directly with analog systems and 8-bit data buses without requiring external components or user trims for full accuracy. The AD670JNZ operates on a single +5 V system supply, making it compatible with microprocessor systems.
Key Specifications
| Parameter | Value | Units |
|---|---|---|
| Resolution | 8 | Bits |
| Conversion Time | 10 | µs |
| Operating Temperature Range | 0 to +70 | °C |
| Input Ranges | 0 mV to 255 mV, 0 V to 2.55 V | mV, V |
| Input Types | Unipolar and Bipolar | |
| Supply Voltage | +5 V | V |
| Package Type | 20-Lead PDIP |
Key Features
- Differential instrumentation amplifier input with excellent common-mode rejection, allowing direct interface to various transducers without preamplification.
- No external components or user trims required for 8-bit accurate performance.
- Operation from a single +5 V supply, compatible with microprocessor systems.
- Four convenient input ranges: 0 mV to 255 mV (1 mV/LSB) and 0 V to 2.55 V (10 mV/LSB), configurable for both unipolar and bipolar inputs.
- Software control of the output mode, allowing selection of unipolar or bipolar inputs and binary or 2's complement output codes.
- Advanced circuit design and proven processing technology, including I2L (integrated injection logic) and thin-film SiCr resistors for stability and calibration to within ±1 LSB.
Applications
- Conversion of transducer signals superimposed on common-mode voltages.
- Industrial control systems requiring precise analog-to-digital conversion.
- Medical devices needing accurate signal conditioning and conversion.
- Aerospace and military applications where the device's robust temperature range and MIL-STD-883 compliance are beneficial.
- Automotive systems requiring reliable and accurate signal processing.
Q & A
- What is the resolution of the AD670JNZ?
The AD670JNZ has an 8-bit resolution.
- What is the conversion time of the AD670JNZ?
The conversion time is 10 µs.
- What are the input ranges of the AD670JNZ?
The input ranges are 0 mV to 255 mV and 0 V to 2.55 V, configurable for both unipolar and bipolar inputs.
- Does the AD670JNZ require external components or user trims?
No, the AD670JNZ does not require external components or user trims for full accuracy.
- What is the operating temperature range of the AD670JNZ?
The operating temperature range is 0°C to +70°C.
- What type of package does the AD670JNZ come in?
The AD670JNZ comes in a 20-Lead PDIP package.
- Can the AD670JNZ be used in military applications?
- What is the supply voltage for the AD670JNZ?
The supply voltage is +5 V.
- Does the AD670JNZ support software control of output modes?
- What technology is used in the successive approximation function of the AD670JNZ?
The successive approximation function is implemented with I2L (integrated injection logic).
