Overview
The ADS7822IDGKRQ1 is a 12-bit sampling analog-to-digital (A/D) converter produced by Texas Instruments. This device is designed to operate over a wide supply range of 2.7 V to 5.25 V and is known for its ultra-low power consumption, making it ideal for battery-operated systems and remote data-acquisition modules. The ADS7822IDGKRQ1 features a pseudo-differential input, a synchronous serial interface, and a high conversion rate of up to 200 kHz. Its architecture is based on a successive approximation register (SAR) with capacitive redistribution, which includes a sample/hold function, allowing for efficient and accurate analog signal conversion.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Resolution | 12 Bits | - | - | - |
| Integral Linearity Error | -2 | - | +2 | LSB |
| Differential Linearity Error | -2 | - | +2 | LSB |
| Offset Error | -3 | - | +3 | LSB |
| Gain Error | -3 | - | +3 | LSB |
| Noise | - | 33 | - | µVrms |
| Conversion Time | 12 Clk Cycles | - | - | - |
| Throughput Rate | - | - | 200 kHz | - |
| Power Supply Range | 2.7 V | - | 5.25 V | - |
| Power Dissipation (at 7.5 kHz) | - | - | 60 µW | - |
| Operating Temperature Range | -40°C | - | 85°C | - |
Key Features
- Ultra-low power consumption, with power dissipation less than 60 µW at 7.5 kHz conversion rate.
- Pseudo-differential input and synchronous serial interface.
- High conversion rate of up to 200 kHz.
- Reference voltage can be set to any level within the range of 50 mV to VCC.
- Small size, available in an MSOP-8 package.
- Sample/hold function integrated into the SAR architecture.
- External clock and single power source (VCC) required.
- Output data in straight binary format.
Applications
- Battery-operated systems.
- Remote data-acquisition modules.
- Simultaneous multichannel systems.
- Isolated data acquisition systems.
Q & A
- What is the resolution of the ADS7822IDGKRQ1?
The ADS7822IDGKRQ1 has a resolution of 12 bits.
- What is the operating supply voltage range of the ADS7822IDGKRQ1?
The device operates over a supply range of 2.7 V to 5.25 V.
- What is the maximum conversion rate of the ADS7822IDGKRQ1?
The maximum conversion rate is up to 200 kHz.
- What type of input does the ADS7822IDGKRQ1 support?
The device supports a pseudo-differential input.
- How is the output data formatted?
The output data is in straight binary format.
- What is the typical power dissipation at a 7.5 kHz conversion rate?
The typical power dissipation is less than 60 µW at 7.5 kHz.
- What is the operating temperature range of the ADS7822IDGKRQ1?
The device operates from -40°C to 85°C.
- What package type is the ADS7822IDGKRQ1 available in?
The device is available in an MSOP-8 package.
- Can the reference voltage be adjusted?
Yes, the reference voltage can be set to any level within the range of 50 mV to VCC.
- What are some typical applications of the ADS7822IDGKRQ1?
Typical applications include battery-operated systems, remote data-acquisition modules, simultaneous multichannel systems, and isolated data acquisition systems.
