Key facts
- Brand
- Analog Devices
- Model
- AD7821
- Industry
- Industrial
- Documents
- 2
- Languages
- EN
- Last added
- 2012-08-02
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Analog Devices AD7821 High-Speed 8-Bit ADC Datasheet
The AD7821 is a high-speed, 8-bit, sampling analog-to-digital converter that offers improved performance over the popular AD7820. It features a conversion time of 660 ns and a 100 kHz signal bandwidth. The device utilizes a half-flash conversion technique, which eliminates the need for an external clock signal, and includes a built-in track-and-hold function capable of digitizing full-scale signals up to 100 kHz.
Read onlineAnalog Devices AD7821 specifications
| Resolution | 8 Bits |
|---|---|
| Total Unadjusted Error | ±1 LSB max |
| Conversion Time (WR-RD Mode) | 660 ns |
| Signal Bandwidth | 100 kHz |
| Sample Rate | 1 MHz |
| Power Dissipation | 50 mW typ |
| Input Leakage Current | ±3 µA max |
| Operating Temperature (K/B Version) | –40 °C to +85 °C |
| Operating Temperature (T Version) | –55 °C to +125 °C |
Source: Analog Devices AD7821 High-Speed 8-Bit ADC Datasheet
All Analog Devices AD7821 documents by type
Ratings, dimensions and ordering codes, for selection and design work.
Questions answered in these manuals
What is the conversion time of the AD7821?
The conversion time for the WR-RD mode is 660 ns, with 700 ns for the RD mode.
Does the AD7821 require an external clock signal?
No, it uses a half-flash conversion technique that eliminates the need to generate a CLK signal.
What is the conversion time of the AD7821?
The AD7821 converts an input in a maximum of 660 ns.
What input voltage ranges does the AD7821 support?
It supports a unipolar range of 0 V to +5 V and a bipolar range of –2.5 V to +2.5 V.