Datasheet LT1351 (Analog Devices) - 9

LT1351
W U TYPICAL PERFORMANCE CHARACTERISTICS Small-Signal Transient Small-Signal Transient Small-Signal Transient (AV = 1) (AV = –1) (AV = –1, CL = 1000pF)
1351 G31 1351 G32 1351 G33
Large-Signal Transient Large-Signal Transient Large-Signal Transient (AV = 1) (AV = – 1) (AV = 1, CL = 10,000pF)
1351 G34 1351 G35 1351 G36
U U W U APPLICATIONS INFORMATION
The LT1351 may be inserted directly into many high
Layout and Passive Components
speed amplifier applications improving both DC and AC The LT1351 amplifier is easy to apply and tolerant of less performance, provided that the nulling circuitry is re- than ideal layouts. For maximum performance (for ex- moved. The suggested nulling circuit for the LT1351 is ample fast settling time) use a ground plane, short lead shown in Figure 1. lengths and RF-quality bypass capacitors (0.01µF to 0.1µF). For high drive current applications use low ESR bypass V+ capacitors (1µF to 10µF tantalum). For details see Design Note 50. 0.1µF 3 + 7 6 The parallel combination of the feedback resistor and gain LT1351 2 4 setting resistor on the inverting input can combine with – 8 the input capacitance to form a pole which can cause 1 0.1µF peaking or even oscillations. For feedback resistors greater 100k than 10k, a parallel capacitor of value, C V– F > (RG)(CIN/RF) 1351 F01 should be used to cancel the input pole and optimize dynamic performance. For applications where the DC
Figure 1. Offset Nulling
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