Overview
The AD670JPZ is a comprehensive 8-bit signal conditioning analog-to-digital converter (ADC) manufactured by Analog Devices Inc. This device integrates an instrumentation amplifier front end, a digital-to-analog converter (DAC), a comparator, a successive approximation register (SAR), a precision voltage reference, and a three-state output buffer on a single monolithic chip. It is designed to interface directly with analog systems to an 8-bit data bus without requiring external components or user trims for full accuracy. The AD670JPZ operates on a +5 V system supply and is available in a 20-lead PLCC (J-Lead) package.
Key Specifications
| Specification | Value |
|---|---|
| Manufacturer | Analog Devices Inc. |
| Part Number | AD670JPZ |
| Package | 20-LCC (J-Lead) |
| Number of Bits | 8 |
| Number of Inputs | 2 |
| Input Type | Differential |
| Data Interface | Parallel |
| Architecture | Successive Approximation (SAR) |
| Reference Type | Internal |
| Supply Voltage | 5 V |
| Operating Temperature | 0°C to +70°C |
| Integral Nonlinearity (INL) | ±0.5 LSB |
| Conversion Time | 10 µs |
Key Features
- Complete Signal Conditioning: The AD670JPZ includes an instrumentation amplifier, DAC, comparator, SAR, precision voltage reference, and a three-state output buffer on a single chip.
- No External Components Required: No user trims or external components are needed for full accuracy, simplifying system design.
- Differential Inputs: Provides differential inputs with excellent common-mode rejection, suitable for converting transducer signals superimposed on common-mode voltages.
- Input Scaling: Configurable for two input ranges: 0 mV to 255 mV (1 mV/LSB) and 0 to 2.55 V (10 mV/LSB), with both unipolar and bipolar input options.
- High Accuracy: Laser wafer trimming of the resistor ladder ensures calibration within ±1 LSB, eliminating the need for user trims.
- True Bipolar Operation: Supports true bipolar operation, enhancing its versatility in various applications.
Applications
- Transducer Signal Conversion: Ideal for converting signals from transducers that are superimposed on common-mode voltages due to its differential inputs and common-mode rejection.
- Industrial Automation: Suitable for use in industrial automation systems where precise and reliable analog-to-digital conversion is required.
- Medical Devices: Can be used in medical devices that require accurate signal conditioning and conversion.
- Test and Measurement Equipment: Applicable in test and measurement equipment where high accuracy and reliability are crucial.
Q & A
- What is the AD670JPZ and what does it do?
The AD670JPZ is an 8-bit signal conditioning analog-to-digital converter that integrates various components like an instrumentation amplifier, DAC, comparator, SAR, and a precision voltage reference on a single chip. It converts analog signals to digital signals and operates on a +5 V supply.
- What package type is the AD670JPZ available in?
The AD670JPZ is available in a 20-lead PLCC (J-Lead) package.
- What are the input ranges of the AD670JPZ?
The AD670JPZ can be configured for two input ranges: 0 mV to 255 mV (1 mV/LSB) and 0 to 2.55 V (10 mV/LSB), with both unipolar and bipolar input options).
- Does the AD670JPZ require external components or user trims?
No, the AD670JPZ does not require external components or user trims for full accuracy).
- What is the conversion time of the AD670JPZ?
The conversion time of the AD670JPZ is 10 µs).
- What is the operating temperature range of the AD670JPZ?
The operating temperature range of the AD670JPZ is 0°C to +70°C).
- Is the AD670JPZ suitable for true bipolar operation?
Yes, the AD670JPZ supports true bipolar operation).
- What type of architecture does the AD670JPZ use?
The AD670JPZ uses a Successive Approximation (SAR) architecture).
- What is the integral nonlinearity (INL) of the AD670JPZ?
The integral nonlinearity (INL) of the AD670JPZ is ±0.5 LSB).
- Is the AD670JPZ still in production?
No, the AD670JPZ is obsolete and no longer manufactured).
