AD582SD

ADI (ADI)

Amplifier, Buffer

product description

Sample & Hold Amplifier IC SAMPLE/HOLD AMP

Product Details

The AD582 is a sample-and-hold amplifier consisting of a high performance operational amplifier, a low leakage analog switch and_a JFET integrating amplifier – all fabricated on a single monolithic chip. An external holding capacitor, connected to the device, completes the sample- and-hold function.

With the analog switch closed, the AD582 functions like a standard op amp;_any feedback network may be connected around the device to control gain and_frequency response. With the switch open, the capacitor holds the output at its last level, regardless of input voltage.

Typical applications for the AD582 include sampled data systems, D/A deglitchers, analog de-multiplexers, auto null systems, strobed measurement systems and_A/D speed enhancement.

The device is available in two versions: the K specified for operation over the 0 to +70° commercial temperature range and_the S specified over the extended temperature range, -55°C to +125°C. All versions may be obtained in either the hermetic sealed, TO-100 can or the TO-116 DIP.

**Product Highlights**_

1. The specially designed input stage presents a high impedance to the signal source in both sample and_hold modes (up to ±12V). Even with signal levels up to ±VS, no undesirable signal inversion, peaking or loss of hold voltage occurs.

2. The AD582 may be connected in any standard op amp configuration to control gain or frequency response and_provide signal inversion, etc.

3. The AD582 offers a high, sample-to-hold current ratio: 107. The ratio of the available charging current to the holding leakage current is often used as a figure of merit for a sample and_hold circuit.

4. The AD582 has a typical charge transfer less than 2pC. A low charge transfer produces less offset error and_permits the use of smaller hold capacitors for faster signal acquisition.

5. The AD582 provides separate analaog and_digital grounds, thus improving the devices immunity to ground and_switching transients.

6. The AD582 is available in versions compliant with MIL-STD-883. Refer to the Analog Devices Military Products Databook or current AD582/883B data sheet for detailed specifications.

### Features and_Benefits

.Suitable for 12-bit applications.High sample/hold currrent ratio: 107.Low acquisition time:

6μ to 0.1%_

.Low charge transfer: <2pC.High input impedence in sample-and-hold modes.Connect in any op amp configuration.Differential logic inputs.MIL-STD-883 compliant versions available