Datasheet

VCA820
www.ti.com ............................................................................................................................................ SBOS395C –OCTOBER 2007–REVISED OCTOBER 2009
ELECTRICAL CHARACTERISTICS: V
S
= ±5V
At A
VMAX
= 20dB, R
F
= 1kΩ, R
G
= 200Ω, and R
L
= 100Ω, unless otherwise noted.
VCA820
MIN/MAX OVER
TYP TEMPERATURE
0°C to –40°C to MIN/ TEST
PARAMETER CONDITIONS +25°C +25°C
(2)
+70°C
(3)
+85°C
(3)
UNITS MAX LEVEL
(1)
AC PERFORMANCE
Small-signal bandwidth (SO-14 package) A
VMAX
= 6dB, V
O
= 1V
PP
, V
G
= +2V 168 MHz typ C
A
VMAX
= 20dB, V
O
= 1V
PP
, V
G
= +2V 150 MHz typ C
A
VMAX
= 40dB, V
O
= 1V
PP
, V
G
= +2V 118 MHz typ C
Large-signal bandwidth A
VMAX
= 20dB, V
O
= 5V
PP
, V
G
= +2V 137 MHz typ C
Gain control bandwidth V
G
= 1V
DC
+ 10mV
PP
200 170 170 165 MHz min B
Bandwidth for 0.1dB flatness A
VMAX
= 20dB, V
O
= 1V
PP
, V
G
= +2V 28 MHz typ C
Slew rate A
VMAX
= 20dB, V
O
= 5V step, V
G
= +2V 1700 1500 1500 1450 V/μs min B
Rise-and-fall time A
VMAX
= 20dB, V
O
= 5V step, V
G
= +2V 2.5 3.1 3.2 3.2 ns max B
Settling time to 0.01% A
VMAX
= 20dB, V
O
= 5V step, V
G
= +2V 11 ns typ C
Harmonic distortion
2nd-harmonic V
O
= 2V
PP
, f = 20MHz –62 –60 –60 –60 dBc min B
3rd-harmonic V
O
= 2V
PP
, f = 20MHz –68 –66 –66 –66 dBc min B
Input voltage noise f > 100kHz 8.2 nV/√Hz typ C
Input current noise f > 100kHz 2.6 pA/√Hz typ C
GAIN CONTROL
Absolute gain error A
VMAX
= 20dB, V
G
= 2V ±0.1 ±0.4 ±0.5 ±0.6 dB max A
V
CTRL0
0.85 V typ C
V
SLOPE
0.09 V typ C
Absolute gain error A
VMAX
= 20dB, V
G
= 1V, (G = 18.06dB) ±0.3 ±0.4 ±0.5 ±0.6 dB max A
Gain at V
G
= 0.2V Relative to maximum gain –26 –24 –24 –23 dB max A
Gain control bias current 10 16 16.6 16.7 μA max A
Average gain control bias current drift ±12 ±12 nA/°C max B
Gain control input impedance 70 || 1 kΩ || pF typ C
DC PERFORMANCE
Input offset voltage A
VMAX
= 20dB, V
CM
= 0V, V
G
= 1V ±4 ±17 ±17.8 ±19 mV max A
Average input offset voltage drift A
VMAX
= 20dB, V
CM
= 0V, V
G
= 1V 30 30 μV/°C max B
Input bias current A
VMAX
= 20dB, V
CM
= 0V, V
G
= 1V 19 25 29 31 μA max A
Average input bias current drift A
VMAX
= 20dB, V
CM
= 0V, V
G
= 1V 90 90 nA/°C max B
Input offset current A
VMAX
= 20dB, V
CM
= 0V, V
G
= 1V ±0.5 ±2.5 ±3.2 ±3.5 μA max A
Average input offset current drift A
VMAX
= 20dB, V
CM
= 0V, V
G
= 1V ±16 ±16 nA/°C max B
Maximum current through gain resistance ±2.6 ±2.55 ±2.55 ±2.5 mA max B
INPUT
Most positive common-mode input voltage R
L
= 100Ω +1.6 +1.6 +1.6 +1.6 V min A
Most negative common-mode input voltage R
L
= 100Ω –2.1 –2.1 –2.1 –2.1 V max A
Common-mode rejection ratio V
CM
= ±0.5V 80 65 60 60 dB min A
Input impedance
Differential 0.5 || 1 MΩ || pF typ C
Common-mode 0.5 || 2 MΩ || pF typ C
(1) Test levels: (A) 100% tested at +25°C. Over temperature limits set by characterization and simulation. (B) Limits set by characterization
and simulation. (C) Typical value only for information.
(2) Junction temperature = ambient for +25°C tested specifications.
(3) Junction temperature = ambient at low temperature limit; junction temperature = ambient +23°C at high temperature limit for over
temperature specifications.
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