VCA8500_0803 Datasheet, PDF (5/40 Pages) Texas Instruments – 8-Channel, Ultralow-Power, Variable Gain Amplifier with Low-Noise Pre-Amp

VCA8500
www.ti.com
SBOS390A – JANUARY 2008 – REVISED MARCH 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, PG = 30dB, clamp disabled (CL = 1), LPF = 15MHz, and R_LOAD = 1kΩ on each output to ground, unless
otherwise noted.
PARAMETER
DIGITAL INPUTS (SDI)
V_IH, high-level input voltage
V_IL, low-level input voltage
Input current
Clock frequency (f_CLK)
Input resistance
Input capacitance
POWER SUPPLY
Supply Voltages
AVDD1, DVDD
AVDD2
Supply Currents⁽⁴⁾
IAVDD1
IDVDD
IAVDD2
Power dissipation, total
POWER-DOWN MODES
Standby Mode
IAVDD1
IDVDD
IAVDD2
Power dissipation
Power-down response time
Power-up response time⁽⁵⁾
Shut-Down Mode
IAVDD1
IDVDD
IAVDD2
Power dissipation
THERMAL CHARACTERISTICS
Temperature range
Thermal resistance, θ_JA
Thermal resistance, θ_JC
TEST CONDITIONS
(PD, DIN, DOUT, CLK, RST)
Operating
Operating
TGC mode (D5 = 1)
CW mode (D5 = 0)
TGC, CW mode
TGC mode
CW mode
All channels, TGC mode, no signal
All channels, CW mode, no signal
PD (pin 49) = high
PD to valid output (90% level)
D2 (PWR) = high
Ambient, operating
Soldered pad; four-layer PCB
with thermal vias
VCA8500
MIN
TYP
MAX
2.0
V_D
0
0.8
±10
10k
20M
1
5
UNIT
V
V
µA
Hz
MΩ
pF
TEST
LEVEL ⁽¹⁾
B
B
A
B
C
C
3.15
3.3
3.6
V
B
4.75
5
5.25
V
B
145
156
mA
A
78
84
mA
A
1.5
3
mA
A
8
10
mA
A
54
59
mA
A
522
570
mW
A
533
575
mW
A
18
mA
A
1.5
mA
A
8
mA
A
104
130
mW
A
0.2
µs
C
50
µs
C
1.5
mA
A
1.5
mA
A
2
mA
A
19
35
mW
A
–40
+85
°C
22.5
°C/W
17.0
°C/W
(4) Clamp enabled (D4 = 0).
(5) See Figure 59 of the Typical Characteristics.
Copyright © 2008, Texas Instruments Incorporated
Product Folder Link(s): VCA8500
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