Overview
The ADS7816UG4, produced by Texas Instruments, is a 12-bit analog-to-digital converter (ADC) designed for high-speed and low-power applications. This ADC features a sampling rate of up to 200 kHz and operates on a single +5V power supply. It incorporates a successive approximation register (SAR) architecture based on capacitive redistribution, which includes an inherent sample/hold function. The device is fabricated on a 0.6µ CMOS process, enabling it to achieve high conversion rates while consuming minimal power.
The ADS7816UG4 is suitable for various applications, including battery-operated systems, remote data acquisition, and isolated data acquisition, due to its low power consumption and compact packaging options.
Key Specifications
| Parameter | Conditions | MIN | TYP | MAX | Units |
|---|---|---|---|---|---|
| Resolution | 12 | 12 | 12 | Bits | |
| No Missing Codes | 11 | 12 | 12 | Bits | |
| Integral Linearity Error | ±0.5 | ±2 | ±0.5 | LSB | |
| Differential Linearity Error | ±0.5 | ±1 | ±0.75 | LSB | |
| Offset Error | ±4 | ±4 | LSB | ||
| Gain Error | ±4 | ±4 | LSB | ||
| Noise | 33 | nV/√Hz | |||
| Full-Scale Input Span | +In – (–In) | 0 | VREF | 6 | V |
| Absolute Input Voltage | +In | –0.2 VCC +0.2 | 6 | 6 | V |
| Capacitance | 25 | pF | |||
| Leakage Current | ±1 | µA | |||
| Sampling Rate | 200 kHz | ||||
| Power Consumption | At 200 kHz | 1.9 mW | |||
| Power Down Current | 3 µA |
Key Features
- High-Speed Sampling: Up to 200 kHz sampling rate.
- Low Power Operation: 1.9 mW at 200 kHz and 3 µA in power down mode.
- Differential Input: Allows for differential input signals with a range limited to ±200 mV for the –In input.
- Synchronous Serial Interface: Data is clocked out serially, most significant bit first, with no pipeline delay.
- Automatic Power Down: Reduces power consumption when not in use.
- Compact Packaging: Available in 8-pin mini-DIP, SOIC, and MSOP packages.
- Flexible Reference Voltage: Can be set between 100 mV and VCC.
Applications
- Battery Operated Systems: Ideal due to low power consumption.
- Remote Data Acquisition: Suitable for remote and isolated data acquisition systems.
- Isolated Data Acquisition: Used in applications requiring isolated data acquisition.
Q & A
- What is the resolution of the ADS7816UG4?
The ADS7816UG4 has a resolution of 12 bits.
- What is the maximum sampling rate of the ADS7816UG4?
The maximum sampling rate is up to 200 kHz.
- What is the power consumption of the ADS7816UG4 at 200 kHz?
The power consumption is 1.9 mW at 200 kHz.
- What is the power down current of the ADS7816UG4?
The power down current is 3 µA.
- Does the ADS7816UG4 support differential input?
Yes, it supports differential input with a range limited to ±200 mV for the –In input.
- What types of packaging are available for the ADS7816UG4?
It is available in 8-pin mini-DIP, SOIC, and MSOP packages.
- Can the reference voltage be adjusted?
Yes, the reference voltage can be set between 100 mV and VCC.
- How is the data output from the ADS7816UG4?
Data is clocked out serially, most significant bit first, with no pipeline delay.
- What are some typical applications of the ADS7816UG4?
Typical applications include battery-operated systems, remote data acquisition, and isolated data acquisition.
- What is the operating temperature range of the ADS7816UG4?
The operating temperature range is from –40°C to +85°C.
