THS7001_16 Datasheet, PDF (12/41 Pages) Texas Instruments – 70-MHz PROGRAMMABLE-GAIN AMPLIFIERS

THS7001, THS7002
70ĆMHz PROGRAMMABLEĆGAIN AMPLIFIERS
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SLOS214C − OCTOBER 1998 − REVISED MARCH 2007
TYPICAL CHARACTERISTICS
THS7002 PREAMP
CHANNEL-TO-CHANNEL
CROSSTALK
−40
VCC = ±15 V & ±5 V
G=2
−50
VO(PP) = 1.3 V
RL = 1 kΩ
RF = 499 Ω
−60
Preamp−1 Input
Preamp−2 Output
−70
−80
−90
100k
Preamp−2 Input
Preamp−1 Output
1M
10M
f − Frequency − Hz
Figure 29
100M
PGA CHANNEL-TO-CHANNEL
GAIN ACCURACY
vs
GAIN SETTING
0.4
VCC = 25_ C
0.3
0.2
VCC = ±5 V
0.1
0
−0.1
−0.2
VCC = ±15 V
−0.3
−0.4
−25 −20 −15 −10 −5 0 5 10 15 20
Gain Setting − dB
Figure 32
PREAMP-TO-PGA CROSSTALK
vs
FREQUENCY
−40
VCC = ±15 V & ±5 V
RL = 1 kΩ
Preamp:
−50 _{G = 2}
RF = 499 Ω
PGA:
−60 ^{G = +2 dB}
Preamp − Input
−70 PGA − Output
PGA − Input
−80
Preamp − Output
−90
100k
1M
10M
f − Frequency − Hz
Figure 30
100M
NORMALIZED PGA GAIN
ACCURACY
vs
TEMPERATURE
0.4
0.3 ^{VCC=±5 V ±15 V}
Typical For All Gains
0.2
0.1
−0.0
−0.1
−0.2
−0.3
−0.4
−40 −20 0 20 40 60 80 100
TA − Free-AiirTemperature − °C
Figure 33
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PGA INPUT REFERRED VOLTAGE
NOISE
vs
FREQUENCY
10k
G = − 22 dB
G = − 16 dB G = − 10 dB
1k
G = − 4 dB
100
10 G = + 2 dB
G = + 8 dB _{G = +14 dB}
1
10
100
G = +20 dB
1k
10k
100k
f − Frequency − Hz
Figure 31
PGA FREQUENCY RESPONSE
26
G = 1,1,1
20
G = 1,1,0
14
VCC = ±15 V
RL = 1 kΩ
VO(PP) =
0.4 V
G = 1,0,1
8
G = 1,0,0
2
−4 ^{G = 0,1,1}
G = 0,1,0
−10
G = 0,0,1
−16
G = 0,0,0
−22
−28
100k
1M
10M
100M
1G
f − Frequency − Hz
Figure 34
PGA FREQUENCY RESPONSE
26
G = 1,1,1
20
G = 1,1,0
14
VCC = ± 5 V
RL = 1 kΩ
VO(PP) =
0.4 V
G = 1,0,1
8
G = 1,0,0
2
−4 ^{G = 0,1,1}
G = 0,1,0
−10
G = 0,0,1
−16
G = 0,0,0
−22
−28
100k
1M
10M
100M
1G
f − Frequency − Hz
Figure 35
PGA LARGE AND SMALL
SIGNAL FREQUENCY
RESPONSE
18
VO(PP) = 3.2 V
12
VCC = ± 5 V
RL = 1 kΩ
G = +2 dB
VO(PP) = 1.6 V
6
VO(PP) = 0.8 V
0
VO(PP) = 0.4 V
−6
VO(PP) = 0.2 V
−12
−18
100k
1M
10M
100M
1G
f − Frequency − Hz
Figure 36
PGA LARGE AND SMALL
SIGNAL FREQUENCY
RESPONSE
18
VO(PP) = 3.2 V
12
VCC = ± 15 V
RL = 1 kΩ
G = +2 dB
VO(PP) = 1.6 V
6
VO(PP) = 0.8 V
0
VO(PP) = 0.4 V
−6
VO(PP) = 0.2 V
−12
−18
100k
1M
10M
100M
1G
f − Frequency − Hz
Figure 37
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