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AD215 Dataheets PDF



Part Number AD215
Manufacturers Analog Devices
Logo Analog Devices
Description 120 kHz Bandwidth/ Low Distortion/ Isolation Amplifier
Datasheet AD215 DatasheetAD215 Datasheet (PDF)

a FEATURES Isolation Voltage Rating: 1,500 V rms Wide Bandwidth: 120 kHz, Full Power (–3 dB) Rapid Slew Rate: 6 V/␮ s Fast Settling Time: 9 ␮s Low Harmonic Distortion: –80 dB @ 1 kHz Low Nonlinearity: ؎0.005% Wide Output Range: ؎10 V, min (Buffered) Built-in Isolated Power Supply: ؎ 15 V dc @ ؎10 mA Performance Rated over –40؇C to +85 ؇C APPLICATIONS INCLUDE High Speed Data Acquisition Systems Power Line and Transient Monitors Multichannel Muxed Input Isolation Waveform Recording Instrumentation.

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a FEATURES Isolation Voltage Rating: 1,500 V rms Wide Bandwidth: 120 kHz, Full Power (–3 dB) Rapid Slew Rate: 6 V/␮ s Fast Settling Time: 9 ␮s Low Harmonic Distortion: –80 dB @ 1 kHz Low Nonlinearity: ؎0.005% Wide Output Range: ؎10 V, min (Buffered) Built-in Isolated Power Supply: ؎ 15 V dc @ ؎10 mA Performance Rated over –40؇C to +85 ؇C APPLICATIONS INCLUDE High Speed Data Acquisition Systems Power Line and Transient Monitors Multichannel Muxed Input Isolation Waveform Recording Instrumentation Power Supply Controls Vibration Analysis 120 kHz Bandwidth, Low Distortion, Isolation Amplifier AD215 FUNCTIONAL BLOCK DIAGRAM FB 4 UNCOMMITTED INPUT OP AMP IN– 3 IN+ 1 IN COM 2 MODULATOR T1 33kΩ POWER +VISO 6 –VISO 5 ISOLATED DC SUPPLY T2 430kHz POWER OSCILLATOR 42 +15VIN 44 –15VIN 43 PWR RTN DEMODULATOR LOW-PASS FILTER 150kHz OUTPUT BUFFER 36 TRIM 0.01µF 37 OUT LO SIGNAL R R 38 OUT HI AD215 GENERAL DESCRIPTION The AD215 is a high speed input isolation amplifier designed to isolate and amplify wide bandwidth analog signals. The innovative circuit and transformer design of the AD215 ensures wideband dynamic characteristics while preserving key dc performance specifications. The AD215 provides complete galvanic isolation between the input and output of the device including the user-available front-end isolated power supplies. The functionally complete design, powered by a ± 15 V dc supply, eliminates the need for a user supplied isolated dc/dc converter. This permits the designer to minimize circuit overhead and reduce overall system design complexity and component costs. The design of the AD215 emphasizes maximum flexibility and ease of use in a broad range of applications where fast analog signals must be measured under high common-mode voltage (CMV) conditions. The AD215 has a ± 10 V input/output range, a specified gain range of 1 V/V to 10 V/V, a buffered output with offset trim and a user-available isolated front-end power supply which produces ± 15 V dc at ± 10 mA. PRODUCT HIGHLIGHTS Flexible Input and Buffered Output Stages: An uncommitted op amp is provided on the input stage of the AD215 to allow for input buffering or amplification and signal conditioning. The AD215 also features a buffered output stage to drive low impedance loads and an output voltage trim for zeroing the output offset where needed. High Accuracy: The AD215 has a typical nonlinearity of ± 0.005% (B grade) of full-scale range and the total harmonic distortion is typically –80 dB at 1 kHz. The AD215 provides designers with complete isolation of the desired signal without loss of signal integrity or quality. Excellent Common-Mode Performance: The AD215BY (AD215AY) provides 1,500 V rms (750 V rms) common-mode voltage protection from its input to output. Both grades feature a low common-mode capacitance of 4.5 pF inclusive of the dc/dc power isolation. This results in a typical common-mode rejection specification of 105 dB and a low leakage current of 2.0 µA rms max (240 V rms, 60 Hz). Isolated Power: An unregulated isolated power supply of ± 15 V dc @ ± 10 mA is available at the isolated input port of the AD215. This permits the use of ancillary isolated front-end amplifiers or signal conditioning components without the need for a separate dc/dc supply. Even the excitation of transducers can be accomplished in most applications. Rated Performance over the –40؇C to +85؇C Temperature Range: With an extended industrial temperature range rating, the AD215 is an ideal isolation solution for use in many industrial environments. High Speed Dynamic Characteristics: The AD215 features a typical full-power bandwidth of 120 kHz (100 kHz min), rise time of 3 µs and settling time of 9 µs. The high speed performance of the AD215 allows for unsurpassed galvanic isolation of virtually any wideband dynamic signal. REV. 0 Information furnished by Analog Devices is believed to be accurate and 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 otherwise under any patent or patent rights of Analog Devices. © Analog Devices, Inc., 1996 One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 617/329-4700 Fax: 617/326-8703 AD215–SPECIFICATIONS (Typical @ +25؇C, V = ؎15 V dc, 2 k⍀ output load, unless otherwise noted.) S Parameter GAIN Range1 Error vs. Temperature vs. Supply Voltage vs. Isolated Supply Load2 Nonlinearity3 AD215BY Grade AD215AY Grade INPUT VOLTAGE RATINGS Input Voltage Rating Maximum Safe Differential Range CMRR of Input Op Amp Isolation Voltage Rating4 AD215BY Grade AD215AY Grade IMRR (Isolation Mode Rejection Ratio) Conditions Min 1 AD215AY/BY Typ Max 10 ±2 Units V/V % ppm/°C ppm/°C ppm/V ppm/mA % % % % V V dB V rms V rms dB dB dB dB dB dB µA rms MΩ GΩʈpF G = 1 V/V, No Load on VISO 0°C to +85°C –40°C to 0°C ± (14.5 V dc to 16.5 V dc) ± 10 V Output Swing, G.


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