Overview
The ADS7809U/1KG4, produced by Texas Instruments, is a complete 16-bit sampling Analog-to-Digital (A/D) converter. It utilizes state-of-the-art CMOS structures and features a 16-bit capacitor-based Successive Approximation Register (SAR) A/D converter. This device includes a sample-and-hold circuit, reference, clock, and a serial data interface. It is designed to operate from a single +5V supply, with a maximum power dissipation of 100mW, and is fully specified for operation over the industrial temperature range of –40°C to +85°C.
Key Specifications
| Parameter | Value | Units |
|---|---|---|
| Resolution | 16 | Bits |
| Sampling Rate | 100kHz | |
| Analog Input Voltage Ranges | ±10V, 0V to 5V, etc. | |
| Integral Linearity Error (INL) | ±3 LSB (ADS7809U), ±2 LSB (ADS7809UB) | |
| Differential Linearity Error (DNL) | +3, –2 LSB (ADS7809U), ±1 LSB (ADS7809UB) | |
| No Missing Codes | 15 Bits (ADS7809U), 16 Bits (ADS7809UB) | |
| Signal-to-(Noise + Distortion) Ratio (SINAD) | 83 dB (ADS7809U), 86 dB (ADS7809UB) | dB |
| Full-Power Bandwidth | 250 kHz | |
| Aperture Delay | 40 ns | |
| Power Supply | +5V | |
| Power Dissipation | 100 mW | |
| Package Type | SO-20 | |
| Operating Temperature Range | –40°C to +85°C | °C |
Key Features
- 16-bit capacitor-based SAR A/D converter with sample-and-hold circuit.
- Single +5V supply operation with low power dissipation (100mW).
- Six specified input ranges, including ±10V and 0V to 5V.
- Serial output with selectable internal or external data clock.
- Output synchronization pulse for ease of use with standard DSP processors.
- Internal or external reference voltage option.
- High accuracy with ±2 LSB INL and ±1 LSB DNL for the ADS7809UB model.
- Full-power bandwidth of 250 kHz.
- Aperture delay of 40 ns.
- Pin-compatible with the 12-bit ADS7808.
Applications
- Data acquisition systems.
- Industrial control and automation.
- Medical devices requiring high precision analog-to-digital conversion.
- Aerospace and defense applications where high accuracy and reliability are crucial.
- Test and measurement equipment.
- Digital signal processing (DSP) systems.
Q & A
- What is the resolution of the ADS7809U/1KG4?
The resolution of the ADS7809U/1KG4 is 16 bits.
- What is the sampling rate of the ADS7809U/1KG4?
The sampling rate of the ADS7809U/1KG4 is 100 kHz.
- What are the available analog input voltage ranges for the ADS7809U/1KG4?
The available analog input voltage ranges include ±10V, 0V to 5V, and others as specified in the datasheet.
- Can the ADS7809U/1KG4 use an external reference voltage?
- What is the power supply requirement for the ADS7809U/1KG4?
The ADS7809U/1KG4 operates from a single +5V supply.
- What is the maximum power dissipation of the ADS7809U/1KG4?
The maximum power dissipation is 100 mW.
- What is the operating temperature range for the ADS7809U/1KG4?
The operating temperature range is –40°C to +85°C.
- What type of package does the ADS7809U/1KG4 come in?
The ADS7809U/1KG4 comes in a SO-20 package.
- Is the ADS7809U/1KG4 compatible with other Texas Instruments A/D converters?
- What is the full-power bandwidth of the ADS7809U/1KG4?
The full-power bandwidth is 250 kHz.
