LH0032C 查看數據表（PDF） - Calogic, LLC
零件编号
产品描述 (功能)
生产厂家
LH0032C Datasheet PDF : 9 Pages
| |||
LH0032 / LH0032C
LLC
capacitance to the inverting input should be compensated by
a small capacitor across the feedback resistor. The value is
strongly dependent on layout and closed loop gain, but will
typically be in the neighborhood of several picofarads.
In the non-inverting configuration, it may be advantageous to
bootstrap the case and/or a guard conductor to the inverting
input. This serves both to divert leakage currents away from
the non-inverting input and to reduce the effective input
capacitance. A unity gain follower so treated will have an
input capacitance under a picofarad.
Compensation
Two compensation schemes may be used, depending on the
designer’s specific needs.
The first technique is shown in Figure 1. It offers the best
0.1% settling time for a ±10V square wave input. The
compensation capacitors CC and CA should be selected from
Figure 2 for various closed-loop gains. Figure 3 shows how
the LH0032 frequency response is modified for different value
compensation capacitors.
Figure 1. LH0032 Frequency Compensation Circuit
Figure 2. Recommended Value of Compensation
Capacitor vs Closed-Loop Gain for Optimum
Settling Time
INPUT
+15V
R3
0.01µF
R2
12
5_
CA
4
11
LH0032
R1
6+
3
2
CC
10
-15V
0.01µF
OUTPUT
10
100
75
5
CC
50
CA
25
0
0
1
10
100
1000
CLOSED LOOP GAIN
Figure 3. The Effect of Various Compensation
Capacitors on LH0032 Open Loop Frequency
Response
80
A VOL CC = 0pF
60
CC = 1pF
0
CC = 5pF
CC = 10pF
40
-45
20 CC = 5pF
CC = 10pF PHASE
0 VS = ±15V
RL = 1k
CC = 1pF
-20 TA = 25˚C
CC = 0pF
10k 100k
1M
10M
FREQUENCY (Hz)
-90
-135
-180
100M
Figure 4. LH0032 Unity Gain Non-Inverting Large
Signal Pulse Response:
TA = 25oC, CC = 10pF, CA = 100pF
10V
10V
100nS
CALOGIC LLC, 237 Whitney Place, Fremont, California 94539, Telephone: 510-656-2900, FAX: 510-651-1076 DS047 REV A
Share Link: 