LT1008CH Linear Technology, LT1008CH Datasheet - Page 12

• Manufacturer Part Number: LT1008CH
• Description: IC PREC OPAMP UNIVERSAL TO-5-8
• Manufacturer: Linear Technology

Specifications of LT1008CH

• Amplifier Type: General Purpose
• Number Of Circuits: 1
• Slew Rate: 0.2 V/µs
• Current - Input Bias: 30pA
• Voltage - Input Offset: 30µV
• Current - Supply: 380µA
• Voltage - Supply, Single/dual (±): ±2 V ~ 18 V
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Through Hole
• Package / Case: TO-5-8
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Output Type: -
• Current - Output / Channel: -
• -3db Bandwidth: -
• Gain Bandwidth Product: -

LT1008
TYPICAL APPLICATIO S
12
*OPTO-MOS SWITCH
INPUT
TYPE OFM1A
THETA-J CORP
INPUT
10k*
2k
Precision, Fast Settling, Lowpass Filter
15V
1k
1.5M
15V
15k
10k
1μF
OPTO-MOS*
7
7
2N4393
×2
100Ω
–15V
–15V
2pF TO 8pF
4
8
4
2
3
10k*
15V
8
10k
LT311A
LT311A
–
+
#1
#2
LT1008
–15V
1
1000pF
1
5
1
U
+
–
–
+
2
3
2
3
10k
–
–
2
3
3
2
+
+
10k
LT318A
LT1008
1N4148 (4)
30pF
1
1
1008 TA09
8
300pF
15V
FILTER CUT
IN ADJUST
6
7
8
5
4
15V
–15V
7 6
4
6
Fast Precision Inverters
SLEW RATE = 100V/μs
SETTLING (10V STEP) = 5μs TO 0.01%
OFFSET VOLTAGE = 30μV
BIAS CURRENT DC = 30pA
*1% METAL FILM
OUTPUT
OUTPUT
INPUT
This circuit is useful where fast signal acquisition and high
precision are required, as in electronic scales.
The filter’s time constant is set by the 2k resistor and the
1μF capacitor until comparator 1 switches. The time
constant is then set by the 1.5M resistor and the 1μF
capacitor. Comparator 2 provides a quick reset.
The circuit settles to a final value three times as fast as a
simple 1.5M-1μF filter with almost no DC error.
10k*
10k
10k
2
3
–
+
1N4148 ×2
LT1008
30pF
1
300pF
15V
7
8
–15V
4
6
1000pF
10k
FULL POWER BANDWIDTH = 2MHz
SLEW RATE AT 50V/μs
SETTLING (10V STEP) = 12μs TO 0.01%
BIAS CURRENT DC = 30pA
OFFSET DRIFT = 0.3μV/°C
OFFSET VOLTAGE = 30μV
*1% METAL FILM
2
3
–
+
10pF
10k*
LT318A
–15V
15V
7
4
6
OUTPUT
1008 TA10
1008fb