THS7001 Datasheet, PDF (12/32 Pages) Texas Instruments – 70-MHz PROGRAMMABLE-GAIN AMPLIFIERS

THS7001, THS7002
70-MHz PROGRAMMABLE-GAIN AMPLIFIERS
SLOS214B – OCTOBER 1998 – REVISED AUGUST 1999
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
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}
G = +20 dB
1
10
100
1k
10k
100k
f – Frequency – Hz
Figure 31
PGA FREQUENCY RESPONSE
26
G = 1,1,1
20
14 ^{G = 1,1,0}
VCC = ±15 V
RL = 1 kΩ
VO(PP) =
0.4 V
G = 1,0,1
8
G = 1,0,0
2
G = 0,1,1
–4
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
2 ^{G = 1,0,0}
G = 0,1,1
–4
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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