VCA2615 Datasheet, PDF (4/29 Pages) Texas Instruments – Dual, Low-Noise Variable-Gain Amplifier with Preamp

VCA2615
SBOS316C − JULY 2005 − REVISED SEPTEMBER 2005
www.ti.com
ELECTRICAL CHARACTERISTICS (continued)
All specifications at T_A = +25°C, V_DD = 5V, load resistance = 500Ω on each output to ground; the input to the preamp (LNP) is single-ended;
fIN = 5MHz, LNP Gain (G1, G2) = 10, H/L = 0, V_CNTL = 2.5V; VCA output is 1VPP differential; CA, CB = 3.9µF, unless otherwise noted.
PARAMETER
CONDITIONS
VCA2615
MIN
TYP
MAX UNIT
ACCURACY
Gain Slope
Gain Error(4)
Gain Range
Gain Range
Gain Range (H/L)
Output Offset Voltage, Differential
Channel-to-Channel Gain Matching
GAIN CONTROL INTERFACE (V_CNTL)
Input Voltage Range
Input Resistance
Response Time
V_CNTL = 0.4V to 2.0V
V_CNTL = 0.4V to 2.0V
V_CNTL = 0.2V to 2.5V
V_CNTL = 0.4V to 2.0V
H/L = 0 (+6dB); VGA High Gain; V_CNTL = 0.2V to 2.5V
H/L = 1 (0dB); VGA Low Gain; V_CNTL = 0.2V to 2.5V
V_CNTL = 0.4V to 2.0V, CHA to CHB
V_CNTL = 0.2V to 2V; to 90% Signal Level
22
−1.5
±0.9
+1.5
52
36.5
−12 to +40
−18 to +34
±50
±0.33
dB/V
dB
dB
dB
dB
dB
mV
dB
0.2 to 2.5
V
1
MΩ
0.6
µs
DIGITAL INPUTS(5), ⁽⁶⁾
(G1, G2, PDL, PDV, H/L, FB1-FB4, VCAINSEL)
VIH, High-Level Input Voltage
VIL, Low-Level Input Voltage
Input Resistance
Input Capacitance
2.0
V
0.8
V
1
MΩ
5
pF
POWER SUPPLY
Supply Voltage
Power-Up Response Time
Power-Down Response Time
Total Power Dissipation
VGA Power-Down
LNP Power-Down
PDV, PDL = 1
PDV = 0, PDL = 1
PDL = 0, PDV = 1
4.75
5.0
5.25
V
25
µs
2
µs
308
350
mW
236
mW
95
mW
THERMAL CHARACTERISTICS
Temperature Range
Ambient, Operating
Thermal Resistance, q_JA
q_JC
Soldered Pad; Four-Layer PCB with Thermal Vias
(1)
R_IN
+
(1
R_F
) ^AL2NP)
(2) _{2nd, 3rd-harmonic distortion less than or equal to −30dBc.}
(3) _{See Table 5.}
(4) _{Referred to best-fit dB linear curve.}
(5) _{Parameters ensured by design; not production tested.}
(6) _{Do not leave inputs floating; no internal pull-up/pull-down resistors.}
−40
+85
°C
29.1
°C/W
2.2
°C/W
4