VCA2619 Datasheet, PDF (3/19 Pages) Burr-Brown (TI) – Dual, Variable Gain Amplifier with Input Buffer

VCA2619
www.ti.com
SBOS276A − AUGUST 2003 − REVISED AUGUST 2003
ELECTRICAL CHARACTERISTICS
At TA = +25°C, VDD = 5V, load resistance = 500Ω on each output to ground single−ended output (1Vpp), MGS = 111, VCACNTL = 2.9V and
fIN = 5MHz, unless otherwise noted.
VCA2619
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNIT
BUFFER
Input Resistance
600
kΩ
Input Capacitance
5
pF
Input Bias Current
1
nA
Maximum Input Voltage
Input Voltage Noise
Input Current Noise
Noise Figure
Bandwidth
PGA Gain = 45dB, RS = 50Ω
Independent of Gain
RF = 550Ω, PGA Gain = 45dB, RS = 75Ω
1
Vpp
5.9
nV/√Hz
350
fA/√Hz
13
dB
100
MHz
PROGRAMMABLE VARIABLE GAIN AMPLIFIER
Peak Input Voltage
1
Vpp
−3dB Bandwidth
20
MHz
Slew Rate
300
V/µs
Output Signal Range
Output Impedance
RL ≥ 500Ω Each Side to Ground
2.5 ±1
V
1
Ω
Output Short−Circuit Current
±40
mA
3rd-Harmonic Distortion
VOUT = 1Vpp, VCACNTL = 2.9V
−45
−60
dBc
2nd-Harmonic Distortion
VOUT = 1Vpp, VCACNTL = 2.9V
−42
−50
dBc
2nd-Harmonic Distortion
Differential, VOUT = 2Vpp, VCACNTL = 3.0V, MGS = 011
−50
dBc
Overload Performance (2nd-Harmonic Distortion)
Input Signal = 0.5Vpp, VCACNTL = 2V
−40 to −45
dB
Time Delay
5
ns
IMD, 2−Tone
Crosstalk
VOUT = 2Vpp, f = 9.95MHz
2Vpp Differential
−59
dBc
−60
dB
ACCURACY
Gain Slope
Gain Error(1)
Output Offset Voltage
Gain Range
GAIN CONTROL INTERFACE
Input Voltage (VCACNTL) Range
Input Resistance
Response Time
VCACNTL = 0.4V to 2.9V
VCACNTL = 0.2V to 3.0V
VCACNTL = 0.4V to 2.9V
VCACNTL = 0.2V to 3.0V
VCACNTL = 0.4V to 2.9V
45dB Gain Change
20
dB/V
±2.75
dB
±1.50
±2.0
dB
±50
mV
52
dB
48
50
dB
0 to 3.0
V
1
MΩ
0.2
µs
POWER SUPPLY
Specified Operating Range
Power Dissipation
Power−Down
(1) _{Referenced to best fit dB−linear curve.}
4.75
5.0
5.25
V
240
300
mW
9.2
mW
3