Key facts
- Brand
- Analog Devices
- Model
- AD722
- Documents
- 11
- Languages
- EN
- Last added
- 2012-08-02
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ANALOG DEVICES AN-412 handbook
The document details how to implement a cost-effective crystal selection circuit for the AD722 chip. It explains that while the chip supports various subcarrier reference frequencies, selecting between crystals required for NTSC (3.579545 MHz) and PAL (4.433619 MHz) systems can be achieved using two low-cost diodes, resistors, a logic inverter gate, and the existing STND signal pin.
Read onlineAnalog Devices AD722 specifications
| Resolution | 8 Bits |
|---|---|
| Total Unadjusted Error | +1 LSB max |
| Differential Nonlinearity | +1 LSB max |
| Full-Scale Error | +0.5 LSB max |
| Zero Code Error | +20 mV max |
| Voltage Output Slew Rate | 2.5 V/s min |
| Digital Crosstalk | 10 nV secs typ |
| Operating Temperature (K/B Version) | -40°C to +85°C |
Source: Analog Devices AD7226 Quad 8-Bit D/A Converter Datasheet
All Analog Devices AD722 documents by type
How to use the product for one specific task, with worked examples.
Ratings, dimensions and ordering codes, for selection and design work.
- Analog Devices AD7226 Quad 8-Bit D/A Converter Datasheet 16 p
- Analog Devices AD7225 Quad 8-Bit DAC Datasheet 12 p
- Analog Devices AD7224 8-Bit DAC with Output Amplifiers Datasheet 8 p
- Analog Devices AD7224 8‑Bit DAC with Output Amplifier Datasheet 8 p
- Analog Devices AD7224 Datasheet 8 p
- Analog Devices AD7228A Octal 8‑Bit DAC Datasheet 8 p
- Analog Devices AD7226 Datasheet 16 p
- Analog Devices AD7226 Quad 8‑Bit DAC Datasheet 16 p
- Analog Devices AD7228A Datasheet 8 p
Questions answered in these manuals
What components are needed for the low-cost crystal selection circuit?
The circuit requires two crystals, two diodes, two resistors, and a logic inverter gate.
How is the NTSC crystal selected?
The STND signal drives R1 forward biasing CR1, which turns the diode on to select Y1 as the crystal.
Does the AD7226 require external trimming?
No user trims are required to achieve full specified performance for the part.
From: Analog Devices AD7226 Quad 8-Bit D/A Converter Datasheet
What is the maximum output current capability of each amplifier?
Each D/A converter includes an output buffer amplifier capable of driving up to 5 mA of output current.
From: Analog Devices AD7226 Quad 8-Bit D/A Converter Datasheet
What is the temperature range for K and L versions?
-40°C to +85°C
Can the AD7225 operate with single or dual supplies?
Yes, it operates with single or dual supplies.