SN761668_15 Datasheet, PDF (11/25 Pages) Texas Instruments – DIGITAL TV TUNER IC

SN761668
www.ti.com ..................................................................................................................................................... SLES199E – JANUARY 2007 – REVISED APRIL 2008
IF Gain Controlled Amplifier
V_CC = 5 V, T_A = 25°C, measured in Figure 24 reference measurement circuit at 50-Ω system, IF = 44 MHz
(unless otherwise noted)
I_IFGCA
V_IFGCAMAX
V_IFGCAMIN
G_IFGCAMAX
G_IFGCAMIN
GCR_IFGCA
V_IFGCAOUT
NF_IFGCA
IM3_IFGCA
IIP_3IFGCA
R_IFGCAIN
R_IFGCAOUT
PARAMETER
Input current (IF GCA CTRL)
Maximum gain control voltage
Minimum gain control voltage
Maximum gain
Minimum gain
Gain control range
Output voltage
Noise figure
Third order intermodulation distortion
Input intercept point
Input resistance (IF GCA IN1, IF GCA IN2)
Output resistance (IF GCA OUT1, IF GCA OUT2)
TEST CONDITIONS
V_IFGCA = 3 V
Gain maximum
Gain minimum
V_IFGCA = 3 V
V_IFGCA = 0 V
V_IFGCA = 0 V to 3 V
Single-ended output
V_IFGCA = 3 V
f_IFGCAIN1 = 43 MHz,
f_IFGCAIIN2 = 44 MHz,
V_IFGCAOUT = –2 dBm,
V_IFGCA = 3 V
V_IFGCA = 0 V
MIN TYP
30
2.5
0
49
53
–4
–1
54
2.1
8.5
–50
11
1
19
MAX
60
V_CC
0.4
57
2
UNIT
µA
V
V
dB
dB
dB
Vp-p
dB
dBc
dBm
kΩ
Ω
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