Datasheet AD215 (Analog Devices)

a
120 kHz Bandwidth, Low Distortion, Isolation Amplifier AD215 FEATURES FUNCTIONAL BLOCK DIAGRAM Isolation Voltage Rating: 1,500 V rms Wide Bandwidth: 120 kHz, Full Power (–3 dB) FB 4 Rapid Slew Rate: 6 V/
m
s AD215 UNCOMMITTED INPUT OP AMP Fast Settling Time: 9
m
s SIGNAL IN– 3 R R Low Harmonic Distortion: –80 dB @ 1 kHz 38 OUT HI IN+ 1 LOW-PASS MODULATOR DEMODULATOR FILTER Low Nonlinearity:
6
0.005% 150kHz IN COM 2 T1 OUTPUT Wide Output Range:
6
10 V, min (Buffered) BUFFER 36 TRIM Built-in Isolated Power Supply:
6
15 V dc @
6
10 mA 33k
Ω
0.01µF Performance Rated over –40
8
C to +85
8
C 37 OUT LO POWER APPLICATIONS INCLUDE +V 6 42 +15V ISO IN ISOLATED 430kHz High Speed Data Acquisition Systems DC POWER 44 –15VIN –V SUPPLY OSCILLATOR ISO 5 43 PWR RTN Power Line and Transient Monitors T2 Multichannel Muxed Input Isolation Waveform Recording Instrumentation Power Supply Controls Vibration Analysis GENERAL DESCRIPTION Flexible Input and Buffered Output Stages:
An uncommit- The AD215 is a high speed input isolation amplifier designed to ted op amp is provided on the input stage of the AD215 to isolate and amplify wide bandwidth analog signals. The innova- allow for input buffering or amplification and signal condition- tive circuit and transformer design of the AD215 ensures wide- ing. The AD215 also features a buffered output stage to drive band dynamic characteristics while preserving key dc performance low impedance loads and an output voltage trim for zeroing the specifications. output offset where needed. The AD215 provides complete galvanic isolation between the
High Accuracy:
The AD215 has a typical nonlinearity of input and output of the device including the user-available ±0.005% (B grade) of full-scale range and the total harmonic front-end isolated power supplies. The functionally complete distortion is typically –80 dB at 1 kHz. The AD215 provides design, powered by a ± 15 V dc supply, eliminates the need for a designers with complete isolation of the desired signal without user supplied isolated dc/dc converter. This permits the designer loss of signal integrity or quality. to minimize circuit overhead and reduce overall system design
Excellent Common-Mode Performance:
The AD215BY complexity and component costs. (AD215AY) provides 1,500 V rms (750 V rms) common-mode The design of the AD215 emphasizes maximum flexibility and voltage protection from its input to output. Both grades feature ease of use in a broad range of applications where fast analog a low common-mode capacitance of 4.5 pF inclusive of the signals must be measured under high common-mode voltage dc/dc power isolation. This results in a typical common-mode (CMV) conditions. The AD215 has a ± 10 V input/output rejection specification of 105 dB and a low leakage current of range, a specified gain range of 1 V/V to 10 V/V, a buffered out- 2.0 µA rms max (240 V rms, 60 Hz). put with offset trim and a user-available isolated front-end
Isolated Power:
An unregulated isolated power supply of power supply which produces ± 15 V dc at ± 10 mA. ±15 V dc @ ±10 mA is available at the isolated input port of the AD215. This permits the use of ancillary isolated front-end
PRODUCT HIGHLIGHTS
amplifiers or signal conditioning components without the need
High Speed Dynamic Characteristics:
The AD215 features for a separate dc/dc supply. Even the excitation of transducers a typical full-power bandwidth of 120 kHz (100 kHz min), rise can be accomplished in most applications. time of 3 µs and settling time of 9 µs. The high speed perfor-
Rated Performance over the –40
8
C to +85
8
C Temperature
mance of the AD215 allows for unsurpassed galvanic isolation
Range:
With an extended industrial temperature range rating, of virtually any wideband dynamic signal. the AD215 is an ideal isolation solution for use in many indus- trial environments. REV. 0 Information furnished by Analog Devices is believed to be accurate and © Analog Devices, Inc., 1996 reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other rights of third parties which may result from its use. No license is granted by implication or
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