VCA8617

SBOS308B − AUGUST 2004 − REVISED NOVEMBER 2004

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3

At TA = +25°C, load resistance = 1kΩ on each output to ground, unless otherwise noted. The input to the preamp (LNA) is single-ended;

pre-amp gain is fixed at +20dB, fIN= 2MHz, PG = 01, ATN = 00, and the output from the VCA is differential, unless otherwise noted.

VCA8617

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

PREAMPLIFIER

Input Resistance

4.5

k

Ω

Input Capacitance

52

pF

Input Bias Current

1

nA

Maximum Input Voltage(1)

200

mVPP

Input Voltage Noise (TGC)

fIN = 5MHz

1.05

nV/

√Hz

Input Voltage Noise (CW)

fIN = 5MHz

1.15

nV/

√Hz

Output Swing (Differential)

2

V

Bandwidth

100

MHz

Gain

20

dB

ACCURACY

Gain Slope

0.2V − 1.7V, VCACNTRL

18

dB/V

Gain Error

0.2V − 1.7V, VCACNTRL

1.7

dB

Output Offset Voltage

Differential

0.65

mV

GAIN CONTROL INTERFACE

Input Voltage (VCACNTRL) Range

0 to 20

V

Input Resistance

1

M

Ω

Response Time

40dB Gain Change, PG = 11

0.2

µs

POWER SUPPLY

Specified Operating Range

2.85

3.0

3.15

V

Power-Down Delay

5

µs

Power-Up Delay

100

µs

Power Dissipation (TGC Mode)

Operating All Channels

825

950

mW

PROGRAMMABLE VGA AND LOW-PASS FILTER

−3dB Cutoff (low-pass)

14.5

MHz

−3dB Cutoff (high-pass)

400

kHz

Slew Rate

300

V/

µs

Output Impedance

10

Ω

Crosstalk

49

dB

Output Common-Mode

1.5

V

Output Swing (Differential)(2)

2

VPP

3rd-Harmonic Distortion

−65

−50

dB

2nd-Harmonic Distortion

−60

−50

dB

Group Delay Variation

±3

ns

CONTINUOUS WAVE PROCESSOR

V/I Converter Transconductance

17

20

23

mA/V

Common-Mode

1.4

V

Max Output Swing

3.4

mAPP

LOGIC INPUTS

VIN LOW (input low voltage)

0

0.6

V

VIN HIGH (input high voltage)

2.1

VDD

V

Input Current

±1

µA

Input Pin Capacitance

5

pF

Clock Input Frequency

10k

25M

Hz

(1) Under conditions when input signal is within linear range of LNA.

(2) Under conditions when signal is within linear range of output amplifier.