Datasheet AD827 (Analog Devices) - 6

AD827
Figure 19. Crosstalk vs. Frequency Figure 20. Crosstalk Test Circuit
INPUT PROTECTION PRECAUTIONS
For high performance circuits, it is recommended that a second An input resistor (resistor RIN of Figure 21a) is recommended in resistor (RB in Figures 21a and 22a) be used to reduce bias- circuits where the input common-mode voltage to the AD827 current errors by matching the impedance at each input. This may exceed (on a transient basis) the positive supply voltage. resistor reduces the error caused by offset voltages by more than This resistor provides protection for the input transistors by an order of magnitude. limiting the maximum current that can be forced into their bases. Figure 21b. Follower Large Figure 21c. Follower Small Figure 21a. Follower Connection Signal Pulse Response Signal Pulse Response Figure 22b. Inverter Large Figure 22c. Inverter Small Figure 22a. Inverter Connection Signal Pulse Response Signal Pulse Response –6– REV. C Document Outline FEATURES CONNECTION DIAGRAMS PRODUCT DESCRIPTION APPLICATION HIGHLIGHTS SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS ORDERING GUIDE METALLIZATION PHOTOGRAPH Typical Performance Characteristics INPUT PROTECTION PRECAUTIONS VIDEO LINE DRIVER A HIGH SPEED THREE OP AMP INSTRUMENTATION AMPLIFIER CIRCUIT A TWO-CHIP VOLTAGE-CONTROLLED AMPLIFIER (VCA) WITH EXPONENTIAL RESPONSE Guidelines for Grounding and Bypassing OUTLINE DIMENSIONS Revision History