VCA8500_0803 Datasheet, PDF (14/40 Pages) Texas Instruments – 8-Channel, Ultralow-Power, Variable Gain Amplifier with Low-Noise Pre-Amp

VCA8500
SBOS390A – JANUARY 2008 – REVISED MARCH 2008
www.ti.com
TYPICAL CHARACTERISTICS (continued)
All specifications at T_A = +25°C, AVDD2 = 5.0V, AVDD1 = DVDD = 3.3V; single-ended, ac-coupled (1µF) input configuration
to the preamp (LNA), f_IN = 5MHz, V_CNTL = 1.0V, clamp disabled (CL = 1), LPF = 15MHz, and R_LOAD = 1kΩ on each output to
ground, unless otherwise noted.
3000
2500
GAIN MATCH AT V_CNTRL = 0.1V
Channel-to-Channel
2000
1500
1000
500
0
3000
2500
GAIN MATCH AT V_CNTRL = 0.6V
Channel-to-Channel
2000
1500
1000
500
0
D Gain (dB)
Figure 8.
2000
1800
1600
1400
1200
1000
800
600
400
200
0
GAIN MATCH AT V_CNTRL = 1.2V
Channel-to-Channel
D Gain (dB)
Figure 10.
TRANSCONDUCTANCE vs TEMPERATURE
16.75
16.50
16.25
16.00
15.75
15.50
-40
-15
10
35
60
85
Temperature (°C)
Figure 12.
2500
2000
1500
1000
500
0
D Gain (dB)
Figure 9.
CW ACCURACY
Transconductance (mA/V)
Figure 11.
OUTPUT OFFSET vs TEMPERATURE
0
-0.1 Differential
-0.2
-0.3
-0.4
-0.5
-0.6
-0.7
-0.8
-0.9
-1.0
-1.1
-1.2
-1.3
-1.4
-40
-15
10
35
60
85
Temperature (°C)
Figure 13.
14
Submit Documentation Feedback
Product Folder Link(s): VCA8500
Copyright © 2008, Texas Instruments Incorporated