Datasheet AD652 (Analog Devices) - 6

AD652 ABSOLUTE MAXIMUM RATINGS Table 2.
Stresses above those listed under Absolute Maximum Ratings
Parameter Ratings
may cause permanent damage to the device. This is a stress Total Supply Voltage +VS to −VS 36 V rating only; functional operation of the device at these or any Maximum Input Voltage (Figure 6) 36 V other conditions above those indicated in the operational Maximum Output Current 50 mA section of this specification is not implied. Exposure to absolute (Open Collector Output) maximum rating conditions for extended periods may affect Amplifier Short-Circuit to Ground Indefinite device reliability. Storage Temperature Range: CERDIP −65°C to +150°C Storage Temperature Range: PLCC −65°C to +150°C
ESD CAUTION
ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000 V readily accumulate on the human body and test equipment and can discharge without detection. Although this product features proprietary ESD protection circuitry, permanent damage may occur on devices subjected to high energy electrostatic discharges. Therefore, proper ESD precautions are recommended to avoid performance degradation or loss of functionality.
DEFINITIONS OF SPECIFICATIONS Table 3. Pin Configurations Pin No. Q-16 Package P-20A Package Gain Error
1 +VS NC The gain of a voltage-to-frequency converter is the scale factor 2 TRIM +VS setting that provides the nominal conversion relationship, e.g., 3 TRIM NC 1 MHz full scale. The gain error is the difference in slope 4 OP AMP OUT OP AMP OUT between the actual and ideal transfer functions for the V-F 5 OP AMP “−“ OP AMP “−“ converter. 6 OP AMP “+” OP AMP “+” 7 10 VOLT INPUT 5 VOLT INPUT 8 −V
Linearity Error
S 10 VOLT INPUT 9 COS 8 VOLT INPUT The linearity error of a V-F is the deviation of the actual 10 CLOCK INPUT OPTIONAL 10 V INPUT transfer function from a straight line passing through the 11 FREQ OUT −VS endpoints of the transfer function. 12 DIGITAL GND COS 13 ANALOG GND CLOCK INPUT
Gain Temperature Coefficient
14 COMP “−“ FREQ OUT The gain temperature coefficient is the rate of change in full- 15 COMP “+” DIGITAL GND scale frequency as a function of the temperature from +25°C to 16 COMP REF ANALOG GND T 17 COMP “−“ MIN or TMAX. 18 COMP “+” 19 NC 20 COMP REF Rev. C | Page 5 of 28 Document Outline FEATURES PRODUCT DESCRIPTION PRODUCT HIGHLIGHTS FUNCTIONAL BLOCK DIAGRAM SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS ESD CAUTION DEFINITIONS OF SPECIFICATIONS THEORY OF OPERATION OVERRANGE SVFC CONNECTION FOR DUAL SUPPLY, POSITIVE INPUT VOLTAGES SVFC CONNECTIONS FOR NEGATIVE INPUT VOLTAGES SVFC CONNECTION FOR BIPOLAR INPUT VOLTAGES PLCC CONNECTIONS GAIN AND OFFSET CALIBRATION GAIN PERFORMANCE REFERENCE NOISE DIGITAL INTERFACING CONSIDERATIONS COMPONENT SELECTION DIGITAL GROUND SINGLE-SUPPLY OPERATION FREQUENCY-TO-VOLTAGE CONVERTER DECOUPLING AND GROUNDING FREQUENCY OUTPUT MULTIPLIER SINGLE-LINE MULTIPLEXED DATA TRANSMISSION Multiplexer Transmitter SVFC Demultiplexer Analog Signal Reconstruction ISOLATED FRONT END A-TO-D CONVERSION DELTA MODULATOR BRIDGE TRANSDUCER INTERFACE OUTLINE DIMENSIONS ORDERING GUIDE