VCA2617

SBOS326 −AUGUST 2005

www.ti.com

3

ELECTRICAL CHARACTERISTICS

single-ended input configuration, fIN = 5MHz, HG = Low (High-Gain Mode), VCNTL = 2.3V, unless otherwise noted.

VCA2617

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNIT

VARIABLE GAIN AMPLIFIER

Input Resistance

Single-Ended

300

k

Ω

Input Capacitance

8

pF

Maximum Input Voltage

Linear Operation(1); Each Input

Differential

2.0

VPP

Single-Ended

1.0

VPP

Input Voltage Noise

Gain = 45dB, RS = 0Ω

4.1

nV/

√Hz

Input Current Noise

Independent of Gain

1

pA/

√Hz

Noise Figure

13.3

dB

Input Common-Mode Voltage

Internal

2.5

V

Bandwidth

50

MHz

Clipping Voltage Range (VCLMP)

0.25 to 2.6

V

Clipping Voltage Variation

VCLMP = 0.5V, VCAOUT = 1.0VPP

±75

mV

Maximum Capacitive Output Loading

50

Ω in Series

80

pF

Slew Rate

100

V/

µs

Maximum Output Signal(1)

6

VPP

Output Common-Mode Voltage

2.5

V

Output Impedance

at 5MHz, Single-Ended, Either Output

3

Ω

Output Short-Circuit Current

60

mA

2nd-Harmonic Distortion

VOUT = 1VPP, VCNTL = 1.5V

−43

−53

dBc

3rd-Harmonic Distortion

VOUT = 1VPP, VCNTL = 1.5V

−43

−62

dBc

Overload Distortion (2nd-Harmonic)

Input Signal = 1VPP, VCNTL = 2V

−40

dBc

Crosstalk

−61

dB

Delay Matching

±1

ns

ACCURACY

Gain Slope

VCNTL = 0.4V to 2.0V

22

dB/V

Gain Error(2)

VCNTL = 0.4V to 2.0V

−2

±0.9

+2

dB

Gain Range

VCNTL = 0.2V to 2.3V

48

dB

VCNTL = 0.4V to 2.0V

35.5

dB

Gain Range (HG)

HG = 0 (+6dB); VGA High Gain; VCNTL = 0.2V to 2.3V

−10 to +38

dB

HG = 1 (0dB); VGA Low Gain; VCNTL = 0.2V to 2.3V

−16 to +32

dB

Output Offset Voltage, Differential

±50

mV

Channel-to-Channel Gain Matching

VCNTL = 0.4V to 2.0V

±0.8

dB

GAIN CONTROL INTERFACE (VCNTL)

Input Voltage Range

0.2 to 2.3

V

Input Resistance

Response Time

1

M

Ω

Input Resistance

Response Time

42dB Gain Change; to 90% Signal Level

0.5

µs

DIGITAL INPUTS(3), (4)

(HGA, HGB, PD)

VIH, High-Level Input Voltage

2.0

V

VIL, Low-Level Input Voltage

0.8

V

Input Resistance

1

M

Ω

Input Capacitance

5

pF

POWER SUPPLY

Supply Voltage

4.75

5.0

5.25

V

Power Dissipation

105

125

mW

Power-Down

22

mW

Power-Up Response Time

25

µs

Power-Down Response Time

2

µs

THERMAL CHARACTERISTICS

Temperature Range

Ambient, Operating

−40

+85

°C

Thermal Resistance,

Soldered Pad; Four-Layer PCB with Thermal Vias

36.7

°C/W

4.0

°C/W