VCA8500 Datasheet, PDF (5/15 Pages) Texas Instruments – 8-Channel, Ultra-Low Power Variable Gain Amplifier with Low-Noise Pre-Amp

VCA8500
www.ti.com
SBOS390 – JANUARY 2008
ELECTRICAL 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, VCA output is 2V_PP differential, R_LOAD = 1kΩ on each output to ground, unless otherwise noted.
PARAMETER
TEST CONDITIONS
VCA8500
MIN
TYP
MAX
UNIT
TEST
LEVEL ⁽¹⁾
POWER SUPPLY
AVDD1 Analog aupply voltage
Specified
3.14
3.3
3.47
V
Operating
3.0
3.3
3.6
V
DVDD
Digital supply voltage
Specified
3.14
3.3
3.47
V
Operating
3.0
3.3
3.6
V
AVDD1 + DVDD quiescent current
TBD
mA
AVDD2 Analog supply voltage (VCA, CW)
4.75
5.0
5.25
V
AVDD2 quiescent current
8
mA
I_Q
P_Dtot
Total quiescent current
Total power dissipation
All channels, no signal
TGC-mode
CW-mode
148
mA
504
TBD
mW
450
mW
PDT
Power-down dissipation, total
PD to Valid output (90% level)
5
10
mW
I_PD
Total power-down current
Power-up response time
1.5
mA
50
µs
Power-down response time
10
µs
PDF
Power-down dissipation, fast-mode
Power-down and power-up;
PD to Valid output (90% level)
18
mW
Power-down, fast-mode
TBD
5
µs
PSRR
Power-supply ripple rejection
Gain < max (TBD), f < 10kHz
TBD
dB
THERMAL CHARACTERISTICS
Temperature range
Ambient, operating
–40
+85
°C
Thermal resistance, θ_JA
Thermal resistance, θ_JC
Soldered pad; four-layer PCB
with thermal vias
22.5
°C/W
17.0
°C/W
Copyright © 2008, Texas Instruments Incorporated
Product Folder Link(s): VCA8500
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