Datasheet

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VCA8500
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 (1 µ F) input configuration to the preamp
(LNA), f
IN
= 5MHz, V
CNTL
= 1.0V, PG = 30dB, clamp disabled (CL = 1), LPF = 15MHz, and R
LOAD
= 1k Ω on each output to ground, unless
otherwise noted.
VCA8500
TEST
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT LEVEL
(1)
DIGITAL INPUTS (SDI) (PD, DIN, DOUT, CLK, RST)
V
IH
, high-level input voltage 2.0 V
D
V B
V
IL
, low-level input voltage 0 0.8 V B
Input current ± 10 µ A A
Clock frequency (f
CLK
) 10k 20M Hz B
Input resistance 1 M Ω C
Input capacitance 5 pF C
POWER SUPPLY
Supply Voltages
AVDD1, DVDD Operating 3.15 3.3 3.6 V B
AVDD2 Operating 4.75 5 5.25 V B
Supply Currents
(4)
IAVDD1 TGC mode (D5 = 1) 145 156 mA A
CW mode (D5 = 0) 78 84 mA A
IDVDD TGC, CW mode 1.5 3 mA A
IAVDD2 TGC mode 8 10 mA A
CW mode 54 59 mA A
Power dissipation, total All channels, TGC mode, no signal 522 570 mW A
All channels, CW mode, no signal 533 575 mW A
POWER-DOWN MODES
Standby Mode PD (pin 49) = high
IAVDD1 18 mA A
IDVDD 1.5 mA A
IAVDD2 8 mA A
Power dissipation 104 130 mW A
Power-down response time 0.2 µ s C
Power-up response time
(5)
PD to valid output (90% level) 50 µ s C
Shut-Down Mode D2 (PWR) = high
IAVDD1 1.5 mA A
IDVDD 1.5 mA A
IAVDD2 2 mA A
Power dissipation 19 35 mW A
THERMAL CHARACTERISTICS
Temperature range Ambient, operating – 40 +85 ° C
Thermal resistance, θ
JA
22.5 ° C/W
Soldered pad; four-layer PCB
with thermal vias
Thermal resistance, θ
JC
17.0 ° C/W
(4) Clamp enabled (D4 = 0).
(5) See Figure 59 of the Typical Characteristics.
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