TI SN761663DGKR

SN761663
www.ti.com
SLES151 – OCTOBER 2005
AGC Amplifier
FEATURES
•
•
•
•
Low-Distortion AGC Amplifier
Wide Gain-Control Range
5-V Power Supply
8-Pin MSOP Package
APPLICATIONS
•
•
Digital TV
Digital CATV, STB
DESCRIPTION
DGK PACKAGE
(TOP VIEW)
VCC
1
8
GND1
IN1
2
7
OUT1
IN2
3
6
OUT2
AGC
4
5
GND2
AGC Control
P0026-03
The SN761663 is an AGC amplifier for the TV tuner
system of a digital TV, CATV, or STB. The circuit
consists of three stages of controlled-gain
amplification, followed by a fixed-gain output
amplifier.
The device is packaged in an 8-pin MSOP suitable
for surface mounting.
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas
Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2005, Texas Instruments Incorporated
SN761663
www.ti.com
SLES151 – OCTOBER 2005
This integrated circuit can be damaged by ESD. Texas Instruments recommends that all integrated
circuits be handled with appropriate precautions. Failure to observe proper handling and installation
procedures can cause damage.
ESD damage can range from subtle performance degradation to complete device failure. Precision
integrated circuits may be more susceptible to damage because very small parametric changes could
cause the device not to meet its published specifications.
ABSOLUTE MAXIMUM RATINGS
over operating free-air temperature range (unless otherwise noted)
(1)
SN761663
Supply voltage, VCC (pin 1) (2)
–0.4 V to 6.5 V
Input voltage (2), AGC (pin 4), IN1 (pin 2), IN2 (pin 3)
–0.4 V to VCC
Continuous total dissipation
477 mW
Operating free-air temperature, TA
–20°C to 85°C
Junction temperature, TJ
(1)
(2)
(3)
(3)
150°C
Stresses beyond those listed under "absolute maximum ratings" may cause permanent damage to the device. These are stress ratings
only, and functional operation of the device at these or any other conditions beyond those indicated under "recommended operating
conditions" is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
Voltage values are with respect to the GND of the circuit.
At TA≤ 25°C. For TA > 25°C, the derating factor is 3.82 mW/°C.
RECOMMENDED OPERATING CONDITIONS
over operating free-air temperature range
MIN
NOM
MAX
5
5.5
V
85
°C
VCC
Supply voltage
4.5
TA
Operating free-air temperature
–20
UNIT
DC ELECTRICAL CHARACTERISTICS
VCC = 5 V, TA = 25°C
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
23
UNIT
ICC
Supply current
IIAGC
Input current (AGC)
VAGC = 3 V
60
µA
VAGCMAX
AGC maximum gain control voltage
Maximum gain
3
VCC
V
VAGCMIN
AGC minimum gain control voltage
Minimum gain
0
1
V
30
mA
AC ELECTRICAL CHARACTERISTICS
VCC = 5 V, TA = 25°C. Parameters measured in test circuit of Figure 9 or Figure 10.
MIN
TYP
MAX
GMAX
Maximum gain
PARAMETER
VAGC = 3 V
56
60
64
dB
GMIN
Minimum gain
VAGC = 0 V
–10
–7
–4
dB
GCR
Gain control range
VAGC = 0 V–3 V
67
dB
VOUT
Output voltage
Single-ended output
2.6
Vp-p
NF
Noise figure
Maximum gain
IM3
Third-order intermodulation distortion
fIN1 = 43 MHz, fIN2 = 44 MHz, VOUT = –2
dBm, maximum gain
IIP3
Input intercept point
Minimum gain
RIN
Input resistance (IN1, IN2)
2
TEST CONDITIONS
UNIT
10
dB
–50
dBc
11
dBm
1
kΩ
SN761663
www.ti.com
SLES151 – OCTOBER 2005
DEVICE INFORMATION
DGK PACKAGE
(TOP VIEW)
VCC
IN1
IN2
AGC
1
8
2
7
3
6
4
5
GND1
OUT1
OUT2
GND2
P0026-02
TERMINAL FUNCTIONS
TERMINAL
NAME
NO.
I/O
EQUIVALENT CIRCUIT
DESCRIPTION
4 kΩ
4
AGC
4
I
Gain-control voltage
100 kΩ
S0118-01
GND1
8
–
Ground
GND2
5
–
Ground
IN1
2
I
IN2
3
I
Vbias
AGC amplifier input
1 kΩ
1 kΩ
2
AGC amplifier input
3
S0117-01
OUT1
7
O
AGC amplifier output
OUT2
6
O
AGC amplifier output
15 Ω
6
7
S0119-01
VCC
1
–
5-V power supply
3
SN761663
www.ti.com
SLES151 – OCTOBER 2005
TYPICAL CHARACTERISTICS
GAIN
vs
VAGC
NOISE FIGURE
vs
GAIN
70
30
TA = 25°C
TA = 25°C
60
VCC = 5.5 V
25
Gain − dB
40
30
Noise Figure − dB
50
VCC = 4.5 V
VCC = 5 V
20
10
VCC = 5.5 V
20
VCC = 5 V
15
VCC = 4.5 V
10
0
−10
0.5
5
1.0
1.5
2.0
2.5
3.0
3.5
10
20
30
AGC Control Voltage − V
40
50
60
Gain − dB
G001
G002
Figure 1.
Figure 2.
OUTPUT LEVEL
vs
INPUT LEVEL
GAIN
vs
FREQUENCY
70
20
VCC= 5.5 V
10
60
VAGC = 3 V
0
VCC = 5.5 V
−10
VAGC = 1.8 V
50
VCC = 5.5 V
VCC= 4.5 V
VCC= 5 V
VCC = 5 V
−20
VCC = 4.5 V
Gain − dB
Output Level − dBm
70
VCC = 5 V
VAGC = 0 V
−30
VCC = 4.5 V
VCC = 5.5 V
−40
40
30
VCC = 5 V
−50
20
VCC = 4.5 V
−60
10
Gain = Max
TA = 25°C
−70
TA = 25°C
−80
−80
−60
−40
−20
0
10
0
100
f − Frequency − MHz
Input Level − dBm
G004
G003
Figure 3.
4
Figure 4.
SN761663
www.ti.com
SLES151 – OCTOBER 2005
TYPICAL CHARACTERISTICS (continued)
IM3
vs
GAIN
IM3 (GAIN = MIN)
10
10
0
0
−10
43 MHz (−2 dBm)
−20
Output Level − dBm
Output Level − dBm
−10
−30
−40
42 MHz
−50
−60
−20
Gain = Min
VAGC = 0 V
VCC = 5 V
TA = 25°C
43/44 MHz
−30
−40
−50
42 MHz
−60
−70
VCC = 5 V
TA = 25°C
−70
−80
−80
0
10
20
30
40
50
−90
−30
60
−20
Gain − dB
−10
0
Input Level − dBm
G005
G006
Figure 5.
Figure 6.
IM3 (GAIN = MID)
IM3 (GAIN = MAX)
20
10
10
Gain = Mid
VAGC = 1.8 V
VCC = 5 V
TA = 25°C
0
−10
−10
Output Level − dBm
Output Level − dBm
0
43/44 MHz
−20
−30
−40
42 MHz
−50
−20
−40
−50
42 MHz
−60
−70
−70
−80
−40
−30
−20
−10
Input Level − dBm
43/44 MHz
−30
−60
−80
−50
10
−90
−80
Gain = Max
VAGC = 3 V
VCC = 5 V
TA = 25°C
−70
−60
G007
Figure 7.
−50
−40
Input Level − dBm
G008
Figure 8.
5
SN761663
www.ti.com
SLES151 – OCTOBER 2005
APPLICATION INFORMATION
TEST CIRCUITS
Figure 9 and Figure 10 are test circuits for the SN761663. Figure 9 is the circuit for measurement of gain and
output voltage. Figure 10 is the circuit for measurement of intermodulation distortion and input intercept point.
This application information is advisory, and a performance check is required for actual application circuits.
VCC
Spectrum Analyzer
(50 Ω)
47 µF
0.1 µF
SG (50 Ω)
0.1 µF
0.1 µF
51 Ω
1
VCC
GND1
8
2
IN1
OUT1
7
3
IN2
OUT2
6
4
AGC
GND2
5
0.1 µF
200 Ω
0.1 µF
200 Ω
51 Ω
0.1 µF
S0120-01
Figure 9. Measurement Circuit for Gain and Output Voltage
SG1 (50 Ω)
VCC
Spectrum Analyzer
(50 Ω)
47 µF
0.1 µF
0.1 µF
+
51 Ω
SG2 (50 Ω)
0.1 µF
1
VCC
GND1
8
2
IN1
OUT1
7
3
IN2
OUT2
6
4
AGC
GND2
5
0.1 µF
200 Ω
0.1 µF
200 Ω
51 Ω
0.1 µF
S0121-01
Figure 10. Measurement Circuit for IM3 and IIP3
6
PACKAGE OPTION ADDENDUM
www.ti.com
17-Nov-2005
PACKAGING INFORMATION
Orderable Device
Status (1)
Package
Type
Package
Drawing
Pins Package Eco Plan (2)
Qty
SN761663DGK
ACTIVE
MSOP
DGK
8
100
Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
SN761663DGKG4
ACTIVE
MSOP
DGK
8
100
Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
SN761663DGKR
ACTIVE
MSOP
DGK
8
2500 Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
SN761663DGKRG4
ACTIVE
MSOP
DGK
8
2500 Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
Lead/Ball Finish
MSL Peak Temp (3)
(1)
The marketing status values are defined as follows:
ACTIVE: Product device recommended for new designs.
LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect.
NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in
a new design.
PREVIEW: Device has been announced but is not in production. Samples may or may not be available.
OBSOLETE: TI has discontinued the production of the device.
(2)
Eco Plan - The planned eco-friendly classification: Pb-Free (RoHS) or Green (RoHS & no Sb/Br) - please check
http://www.ti.com/productcontent for the latest availability information and additional product content details.
TBD: The Pb-Free/Green conversion plan has not been defined.
Pb-Free (RoHS): TI's terms "Lead-Free" or "Pb-Free" mean semiconductor products that are compatible with the current RoHS requirements
for all 6 substances, including the requirement that lead not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered
at high temperatures, TI Pb-Free products are suitable for use in specified lead-free processes.
Green (RoHS & no Sb/Br): TI defines "Green" to mean Pb-Free (RoHS compatible), and free of Bromine (Br) and Antimony (Sb) based flame
retardants (Br or Sb do not exceed 0.1% by weight in homogeneous material)
(3)
MSL, Peak Temp. -- The Moisture Sensitivity Level rating according to the JEDEC industry standard classifications, and peak solder
temperature.
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Addendum-Page 1
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