HOME＞在庫検索＞在庫情報
AD650
Voltage-to-Frequency and Frequency-to-Voltage Converter AD650 Data Sheet FUNCTIONAL BLOCK DIAGRAM V/F conversion to 1 MHz Reliable monolithic construction Very low nonlinearity 0.002% typ at 10 kHz 0.005% typ at 100 kHz 0.07% typ at 1 MHz Input offset trimmable to zero CMOS- or TTL-compatible Unipolar, bipolar, or differential V/F V/F or F/V conversion Available in surface mount MIL-STD-883 compliant versions available AD650 BIPOLAR OFFSET 4 CURRENT –VS 5 S1 1mA –VS OUT IN NC 7 +VS ANALOG GND DIGITAL GND 9 COMPARATOR INPUT FOUTPUT –0.6V –VS ONE FREQ ONE SHOT 6 SHOT OUT CAPACITOR OFFSET NULL 10 –IN 3 13 8 OP AMP +IN 2 OFFSET NULL 11 INPUT OFFSET TRIM 14 12 VOUT 1 COMP NC = NO CONNECT 00797-001 FEATURES Figure 1. PRODUCT DESCRIPTION The AD650 V/F/V (voltage-to-frequency or frequency-to-voltage converter) provides a combination of high frequency operation and low nonlinearity previously unavailable in monolithic form. The inherent monotonicity of the V/F transfer function makes the AD650 useful as a high-resolution analog-to-digital converter. A flexible input configuration allows a wide variety of input voltage and current formats to be used, and an open-collector output with separate digital ground allows simple interfacing to either standard logic families or opto-couplers. The AD650JN and AD650KN are offered in plastic 14-lead DIP packages. The AD650JP is available in a 20-lead plastic leaded chip carrier (PLCC). Both plastic packaged versions of the AD650 are specified for the commercial temperature range (0°C to 70°C). For industrial temperature range (−25°C to +85°C) applications, the AD650AD and AD650BD are offered in ceramic packages. The AD650SD is specified for the full −55°C to +125°C extended temperature range. The linearity error of the AD650 is typically 20 ppm (0.002% of full scale) and 50 ppm (0.005%) maximum at 10 kHz full scale. This corresponds to approximately 14-bit linearity in an analogto-digital converter circuit. Higher full-scale frequencies or longer count intervals can be used for higher resolution conversions. The AD650 has a useful dynamic range of six decades allowing extremely high resolution measurements. Even at 1 MHz full scale, linearity is guaranteed less than 1000 ppm (0.1%) on the AD650KN, BD, and SD grades. 1. Can operate at full-scale output frequencies up to 1 MHz (in addition to having very high linearity). 2. Can be configured to accommodate bipolar, unipolar, or differential input voltages, or unipolar input currents. 3. TTL or CMOS compatibility is achieved by using an open collector frequency output. The pull-up resistor can be connected to voltages up to 30 V. 4. The same components used for V/F conversion can also be used for F/V conversion by adding a simple logic biasing network and reconfiguring the AD650. 5. Separate analog and digital grounds prevent ground loops in real-world applications. 6. Available in versions compliant with MIL-STD-883. In addition to analog-to-digital conversion, the AD650 can be used in isolated analog signal transmission applications, phased-locked loop circuits, and precision stepper motor speed controllers. In the F/V mode, the AD650 can be used in precision tachometer and FM demodulator circuits. The input signal range and full-scale output frequency are userprogrammable with two external capacitors and one resistor. Input offset voltage can be trimmed to zero with an external potentiometer. Rev. E PRODUCT HIGHLIGHTS Document Feedback 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 that may result from its use. Specifications subject to change without notice. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Trademarks and registered trademarks are the property of their respective owners. One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 781.329.4700 ©2013 Analog Devices, Inc. All rights reserved. Technical Support www.analog.com
AD
Analog Devices
U.S.A
半導体デバイスを製造するアメリカの多国籍企業。特にADC、DAC、MEMS、DSPなどに強い。現在は 65nm から 3μm のプロセスルールの回路を設計している。
弊社からの見積回答メールの返信又はFAXにてお願いします。
