SN761681
TV TUNER IC
www.ti.com
SLES165 – DECEMBER 2005
FEATURES
•
•
•
•
•
•
•
•
Single-Chip Mixer/Oscillator and PLL
Synthesizer
Three-Band Local Oscillator
I2C Bus Protocol (Bidirectional Data
Transmission)
30-V Tuning Voltage Output
Four NPN-Type Band-Switch Drivers
Programmable Reference Divider Ratio (512,
640, or 1024 )
5-V Power Supply
30-Pin TSSOP Package
APPLICATIONS
•
•
•
TV
VCR/DVD Recorder
Set-Top Box
DESCRIPTION
DBT PACKAGE
(TOP VIEW)
VHI OSC C
VHI OSC B
OSC GND
VLO OSC C
VLO OSC B
UHF OSC B1
UHF OSC C1
UHF OSC C2
UHF OSC B2
IF GND
VCC
IF OUT1
IF OUT2
CP
VTU
1
30
2
29
3
28
4
27
5
26
6
25
7
24
8
23
9
22
10
21
11
20
12
19
13
18
14
17
15
16
UHF RF IN2
UHF RF IN1
VHF RF IN
RF GND
MIX OUT2
MIX OUT1
BS4
BS2
BS1
BS3
ADC
AS
SDA
SCL
XTAL
P0038-01
The SN761681 is a synthesized tuner IC designed for
TV tuning systems. The circuit consists of a PLL
synthesizer, three-band local oscillator and mixer,
30-V output tuning amplifier, four NPN band-switch
drivers, and is available in a small-outline package. A
15-bit programmable counter and reference divider
are controlled by I2C bus protocol. Tuning step
frequency is selectable by this reference divider ratio
for a crystal oscillator.
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
SN761681
TV TUNER IC
www.ti.com
SLES165 – DECEMBER 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.
VHF-L
Osc
VCC
MIX OUT1
MIX OUT2
UHF OSC B2
UHF OSC C2
UHF OSC B1
VHF-H
Osc
UHF OSC C1
VHI OSC C
VHI OSC B
OSC GND
VLO OSC C
VLO OSC B
Functional Block Diagram
UHF
Osc
IF
Amp
IF OUT1
IF OUT2
VHF
Mixer
VHF RF IN
IF GND
UHF
Mixer
UHF RF IN1
UHF RF IN2
1/8
Prescaler
1/32, 1/33
Prescaler
CP
15-Bit
Counter
VTU
RF GND
XTAL
Op
Amp
XTAL
Osc 4 MHz
512/640/1024
Divider
Charge
Pump
Phase
Detector
NPN Band Switch Port
SCL
SDA
2
I C Bus
Interface
AS
BS4
BS3
BS2
BS1
ADC
5-Level
ADC
B0089-02
2
SN761681
TV TUNER IC
www.ti.com
SLES165 – DECEMBER 2005
Pin Assignments
Pin Description
TERMINAL
NAME
DESCRIPTION
NO.
SCHEMATIC
ADC
20
ADC input
Figure 1
AS
19
Address selection input
Figure 2
BS1
22
Band switch1 output (NPN emitter follower)
Figure 3
BS2
23
Band switch2 output (NPN emitter follower)
Figure 3
BS3
21
Band switch3 output (NPN emitter follower)
Figure 3
BS4
24
Band switch4 output (NPN emitter follower)
Figure 3
CP
14
Charge pump output
Figure 4
IF GND
10
IF ground
IF OUT1
12
IF output
Figure 5
IF OUT2
13
IF output
Figure 5
MIX OUT1
25
Mixer output
Figure 6
MIX OUT2
26
Mixer output
Figure 6
OSC GND
3
Oscillator ground
RF GND
27
RF ground
SCL
17
Serial clock input
Figure 7
SDA
18
Serial data input/output
Figure 8
UHF OSC B1
6
UHF oscillator base1
Figure 9
UHF OSC B2
9
UHF oscillator base2
Figure 9
UHF OSC C1
7
UHF oscillator collector1
Figure 9
UHF OSC C2
8
UHF oscillator collector2
Figure 9
UHF RF IN1
29
UHF RF input
Figure 10
UHF RF IN2
30
UHF RF input
Figure 10
VCC
11
Supply voltage for mixer/oscillator/PLL: 5-V
VHF RF IN
28
VHF RF input
Figure 11
VHI OSC B
2
VHF HIGH oscillator base
Figure 12
VHI OSC C
1
VHF HIGH oscillator collector
Figure 12
VLO OSC B
5
VHF LOW oscillator base
Figure 13
VLO OSC C
4
VHF LOW oscillator collector
Figure 13
VTU
15
Tuning voltage amplifier output
Figure 14
XTAL
16
4-MHz crystal oscillator input
Figure 15
150 kW
20
19
50 kW
S0159-01
S0133-03
Figure 1.
Figure 2.
3
SN761681
TV TUNER IC
www.ti.com
SLES165 – DECEMBER 2005
21
14
22
23
50 kW
24
S0138-02
S0156-01
Figure 3.
Figure 4.
25
26
12
13
S0160-01
S0155-01
Figure 5.
Figure 6.
18
17
S0136-03
S0133-02
Figure 7.
4
Figure 8.
SN761681
TV TUNER IC
www.ti.com
SLES165 – DECEMBER 2005
29
8
7
9
6
3 kW
30
3 kW
S0142-05
S0130-01
Figure 9.
Figure 10.
1
28
2
3 kW
3 kW
S0142-04
S0129-01
Figure 11.
Figure 12.
15
4
5
3 kW
3 kW
S0129-02
S0157-01
Figure 13.
Figure 14.
5
SN761681
TV TUNER IC
www.ti.com
SLES165 – DECEMBER 2005
16
S0158-01
Figure 15.
ABSOLUTE MAXIMUM RATINGS
over operating free-air temperature range (unless otherwise noted)
(1)
Supply voltage, VCC (2)
VCC (Pin 11)
–0.4 V to 6.5 V
Input voltage 1, VGND (2)
RF GND, OSC GND (Pins 3, 27)
–0.4 V to 0.4 V
Input voltage 2, VVTU
(2)
VTU
–0.4 V to 35 V
Input voltage 3, VIN (2)
Other pins (Pins 1, 2, 4–9, 12–14, 16–26, 28–30)
–0.4 V to 6.5 V
Continuous total dissipation, PD (3)
TA ≤ 25°C
1071 mW
Operating free-air temperature, TA
–20°C to 85°C
Storage temperature range, Tstg
–65°C to 150°C
Maximum junction temperature, TJ
150°C
Maximum short-circuit time, tSC(max)
(1)
(2)
(3)
Each pin to VCC or to GND
10 s
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 IF GND of the circuit.
Derating factor is 8.57 mW/°C for TA ≥ 25°C.
RECOMMENDED OPERATING CONDITIONS
over operating free-air temperature range (unless otherwise noted)
Supply voltage, VCC
MIN
NOM
MAX
4.5
5
5.5
V
30
33
V
10
mA
85
°C
Tuning supply voltage, VTU
Output current of band switch, IBS
Operating free-air temperature, TA
6
One port on
–20
UNIT
SN761681
TV TUNER IC
www.ti.com
SLES165 – DECEMBER 2005
ELECTRICAL CHARACTERISTICS, Total Device and Serial Interface
VCC = 4.5 V to 5.5 V, TA = –20°C to 85°C, unless otherwise noted
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
ICC1
Supply current 1
ICC2
Supply current 2
VIH
High-level input voltage (SCL, SDA)
VIL
Low-level input voltage (SCL, SDA)
1.4
V
IIH
High-level input current (SCL, SDA)
10
µA
IIL
Low-level input current (SCL, SDA)
–10
VPOR
Power-on-reset supply voltage
(threshold of supply voltage between
reset and operation mode)
2.1
One band switch on (IBS = 10 mA)
60
mA
70
mA
2.8
VCC
V
µA
2.8
3.5
V
I2C INTERFACE
VASH
Address-select high-input voltage
(AS)
VCC = 5 V
4.5
5
V
VASM1
Address-select mid1-input voltage
(AS)
VCC = 5 V
2
3
V
VASM2
Address-select mid2-input voltage
(AS)
VCC = 5 V
1
1.5
V
VASL
Address-select low-input voltage
(AS)
VCC = 5 V
0.5
V
IASH
Address-select high-input current
(AS)
140
µA
IASL
Address-select low-input current
(AS)
VADC
ADC input voltage
See Table 8
IADH
ADC high-level input current
VADC = VCC
IADL
ADC low-level input current
VADC = 0 V
VOL
Low-level output voltage (SDA)
VCC = 5 V, IOL = 3 mA
0.4
V
lSDAH
High-level output leakage current
(SDA)
VSDA = 5.5 V
10
µA
fSCL
Clock frequency (SCL)
400
kHz
µA
–50
0
VCC
V
10
µA
µA
–50
100
I2C Timing (see timing chart, Figure 16)
thd(DAT)
Data hold time
0
µs
t(BUF)
Bus free time
1.3
µs
thd(STA)
Start hold time
0.6
µs
t(Low)
SCL-low hold time
1.3
µs
t(High)
SCL-high hold time
0.6
µs
tsu(STA)
Start setup time
0.6
µs
tsu(DAT)
Data setup time
0.1
µs
tr
SCL, SDA rise time
0.3
µs
tf
SCL, SDA fall time
0.3
µs
tsu(STO)
Stop setup time
0.6
µs
7
SN761681
TV TUNER IC
www.ti.com
SLES165 – DECEMBER 2005
ELECTRICAL CHARACTERISTICS, PLL and Band Switch
VCC = 4.5 V to 5.5 V, TA = –20°C to 85°C, unless otherwise noted
PARAMETER
TEST CONDITIONS
MIN
N
Divider ratio
15-bit frequency word
256
fXTAL
Crystal oscillator frequency
RXTAL = 25 Ω to 300 Ω
3.2
ZXTAL
Crystal oscillator input impedance
VIXTAL2
Minimum reference input sensitivity
(XTAL)
4 MHz, ac coupling with 0.1 µF
capacitor
VVTUL
Tuning amplifier low-level output
voltage
RL = 22 kΩ, VTU = 33 V
IVTUOFF
Tuning amplifier leakage current (off) OS = 1, VTU = 33 V
ICPH
Charge-pump high-level input
current
ICPL
Charge-pump low-level input current CP = 0
VCP
Charge-pump output voltage
PLL locked
ICPOFF
Charge-pump leakage current
T2 = 0, T1 = 1, VCP = 2 V,
TA = 25°C
IBS
Band-switch driver output current
VBS1
VBS2
IBSOFF
8
Band-switch driver output voltage
Band-switch driver leakage current
TYP
MAX
4
4.48
1.6
0.3
CP = 1
IBS = 10 mA
IBS = 10 mA, VCC = 5 V, TA = 25°C
VBS = 0 V
0.4
MHz
kΩ
100
mVp-p
0.5
V
10
µA
280
µA
60
µA
1.95
V
–15
15
nA
10
mA
3
3.5
UNIT
32767
V
3.9
3
µA
SN761681
TV TUNER IC
www.ti.com
SLES165 – DECEMBER 2005
ELECTRICAL CHARACTERISTICS, Mixer, Oscillator, IF Amplifier
VCC = 5 V, TA = 25°C, measured in Figure 17 reference measurement circuit at 50-Ω system,
IF filter characteristics: fpeak = 43 MHz (unless otherwise noted)
PARAMETER
Gc1
Gc3
Gc4
Gc6
Gc7
Gc9
NF1
MIN
TYP
MAX
(1)
Conversion gain (mixer-IF amplifier), fin = 58 MHz
VHF-LOW
fin = 130 MHz (1)
22
25
28
22
25
28
(1)
Conversion gain (mixer-IF amplifier), fin = 136 MHz
VHF-HIGH
fin = 364 MHz (1)
22
25
28
22
25
28
(1)
Conversion gain (mixer-IF amplifier), fin = 370 MHz
VHF-UHF
fin = 804 MHz (1)
26
29
32
25
28
31
fin = 55.25 MHz
9.5
fin = 127.25 MHz
9.5
fin = 133.25 MHz
10
fin = 361.25 MHz
10
fin = 367.25 MHz
11
fin = 801.25 MHz
11
1% cross-modulation distortion,
VHF-LOW
fin = 55.25 MHz (2)
89
MHz (2)
89
1% cross-modulation distortion,
VHF-HIGH
fin = 133.25 MHz (2)
86
fin = 361.25 MHz (2)
86
fin = 367.25MHz (2)
87
fin = 801.25 MHz (2)
87
fin = 55.25 MHz (3)
117
Noise figure, VHF-LOW
NF3
NF4
Noise figure, VHF-HIGH
NF6
NF7
Noise figure, UHF
NF9
CM1
CM3
CM4
CM6
CM7
CM9
VIFO1
VIFO3
VIFO4
VIFO6
VIFO7
VIFO9
ΦOSC1
ΦOSC3
ΦOSC4
ΦOSC6
ΦOSC7
ΦOSC9
TEST CONDITIONS
1% cross-modulation distortion, UHF
IF output voltage, VHF-LOW
IF output voltage, VHF-HIGH
IF output voltage, UHF
Phase noise, VHF-LOW
Phase noise, VHF-HIGH
Phase noise, UHF
fin = 127.25
MHz (3)
117
fin = 133.25 MHz (3)
117
fin = 361.25 MHz (3)
117
fin = 367.25MHz (3)
117
MHz (3)
117
fin = 127.25
fin = 801.25
fin = 55.25 MHz (4)
88
fin = 127.25 MHz (4)
88
fin = 133.25 MHz (4)
86
fin = 361.25 MHz (4)
86
fin = 367.25MHz (4)
84
MHz (4)
84
fin = 801.25
Prescaler beat (5)
(1)
(2)
(3)
(4)
(5)
UNIT
dB
dB
dB
dB
dB
dB
dBµV
dBµV
dBµV
dBµV
dBµV
dBµV
dBc/Hz
dBc/Hz
dBc/Hz
25
dBµV
IF = 43 MHz, RF input level = 80 dBµV
fundes = fdes ±6 MHz, Pin = 80 dBµV, AM 1 kHz, 30%, DES/CM = S/I = 46 dB
IF = 45.75 MHz
Offset = 10 kHz, RF input level = 70 dBµV
Design parameter, not tested
9
SN761681
TV TUNER IC
www.ti.com
SLES165 – DECEMBER 2005
Functional Description
I2C Bus Mode
I2C Write Mode (R/W = 0)
Table 1. Write Data Format
MSB
LSB
(1)
Address byte (ADB)
1
1
0
0
0
MA1
MA0
R/W = 0
A
Divider byte 1 (DB1)
0
N14
N13
N12
N11
N10
N9
N8
A
Divider byte 2 (DB2)
N7
N6
N5
N4
N3
N2
N1
N0
A
Control byte (CB)
1
CP
T2
T1
T0
RSA
RSB
OS
A
Band-switch byte (BB)
X
X
X
X
BS4
BS3
BS2
BS1
A
(1)
A: Acknowledge
Table 2. Description of Data Symbols
SYMBOL
DESCRIPTION
MA[1:0]
Address-set bits (see Table 3, Address Selection)
N[14:0]
Programmable counter set bits
DEFAULT
N14 = N13 = N12 = ... = N0 = 0
N = N14 × 214 + N13 × 213 + ... + N1 × 2 + N0
Oscillation frequency = fr × 8 × N
fr = Reference frequency = 4 MHz/Reference divider
CP
Charge-pump current-set bit
CP = 1
60 µA (CP = 0), 280 µA (CP = 1)
T[2:0]
TEST bits (see Table 4, Test Bits)
T[2:0] = 001
Normal mode: T2 = 0, T1 = 0, T0 = 1/0
RSA, RSB
Reference divider ratio selection bits
RSA = 0, RSB = 1
See Table 6, Reference Divider Ratio.
OS
Tuning amplifier control bit
OS = 0
Tuning voltage on (OS = 0)
Tuning voltage off, high impedance (OS = 1)
BS[4:1]
Band-switch control bits
BSn = 0
BSn = 0: Tr = OFF
BSn = 1: Tr = ON
Band selection by BS1, BS2, BS4
X
10
BS1(VL)
BS2(VH)
BS4(U)
1
X
X
0
1
X
0
0
1
Don't care
VHF-LO
VHF-HI
UHF
SN761681
TV TUNER IC
www.ti.com
SLES165 – DECEMBER 2005
Table 3. Address Selection
MA1
MA0
Voltage Applied on AS Input
0
0
LOW: 0 V to 0.1 VCC
0
1
MID2: open, or 0.2 VCC to 0.3 VCC
1
0
MID1: 0.4 VCC to 0.6 VCC
1
1
HIGH: 0.9 VCC to VCC
Table 4. Test Bits
(1)
(1)
T2
T1
T0
0
0
0
Normal operation
Device Operation
0
0
1
Normal operation
0
1
X
Charge pump is off.
1
1
0
Charge pump is sink.
1
1
1
Charge pump is source.
1
0
X
Test mode
Note
Default
ADC not available
Not used for other bit patterns
Table 5. Reference Divider Ratio
RSA
RSB
Reference Divider Ratio
X
0
640
0
1
1024
1
1
512
I2C Read Mode (R/W = 1)
Table 6. Read Data Format
MSB
Address byte (ADB)
Status byte (SB)
(1)
LSB
(1)
1
1
0
0
0
MA1
MA0
R/W = 1
A
POR
FL
1
1
1
A2
A1
A0
–
A: Acknowledge
Table 7. Description of Data Symbols
SYMBOL
DESCRIPTION
MA[1:0]
Address-set bits (see Table 3, Address Selection)
POR
Power-on-reset flag
DEFAULT
POR = 1
POR set: Power on
POR reset: End-of-data transmission procedure
FL
In-lock flag
A[2:0]
Digital data of ADC (see Table 8, ADC Level)
PLL locked (FL = 1), PLL unlocked (FL = 0)
11
SN761681
TV TUNER IC
www.ti.com
SLES165 – DECEMBER 2005
Table 8. ADC Level
(1)
Voltage Applied on ADC Input (1)
A2
A1
A0
1
0
0
0.6 VCC to VCC
0
1
1
0.45 VCC to 0.6 VCC
0
1
0
0.3 VCC to 0.45 VCC
0
0
1
0.15 VCC to 0.3 VCC
0
0
0
0 V to 0.15 VCC
Accuracy is 0.03 × VCC.
t(High)
tr
t(Low)
SCL
thd(STA)
tsu(DAT)
tf
thd(DAT )
tsu(STA)
tsu(STO)
SDA
t(BUF)
T0101-01
2
Figure 16. I C Timing Chart
12
SN761681
TV TUNER IC
www.ti.com
SLES165 – DECEMBER 2005
APPLICATION INFORMATION
Reference Measurement Circuit
C27 X1
16
15
R10
SCL
C28 R11
C29 R12
19
C30
20
C43
21
IF OUT2
BS3
C42
C41
ADC
VCC
BS3
IF GND
BS1
UHF OSC B2
9
R19 C12
R3
7
6
MIX OUT1
UHF OSC B1
MIX OUT2
VLO OSC B
C10
VC3
C9
L4
RF GND
VLO OSC C
R18
R5
R2
C6
VC2
4
27
R14
3
28
VHF RF IN
C5
C7
OSC GND
C8
L2
2
29
C40
C14
5
26
UHF RF IN1
VHI OSC B
UHF RF IN2
VHI OSC C
C2
1
30
UIN1
R4
C13
UHF OSC C1
25
C34
VIN
VCC
C17
C11
UHF OSC C2
24
L5
C35
C18
C21
8
U1
BS4
L6
R21
L3
BS4
C33
IF OUT1
C20
10
BS2
C44
R22
11
23
BS2
IF OUT2
C25
IF OUT1
22
BS1
C24
C23
12
AS
ADC
C22
13
SDA
AS
C36
CP
18
SDA
TU
R8
14
17
SCL
R7
VTU
XTAL
L1
C1
C38
C4
C3
UIN2
C39
VC1
R1
C16
S0161-01
NOTE: This application information is advisory and a performance check is required for actual application circuits. TI
assumes no responsibility for the consequences of the use of this circuit nor for any infringement of patent or patent
rights of third parties which may result from its use.
Figure 17. Reference Measurement Circuit
13
SN761681
TV TUNER IC
www.ti.com
SLES165 – DECEMBER 2005
APPLICATION INFORMATION (continued)
Component Values for Measurement Circuit
PART NAME
VALUE
PART NAME
VALUE
C1 (VHI OSC C)
3 pF
C39 (UIN2)
2.2 nF
C2 (VHI OSC B)
2 pF
C40 (VIN)
2.2 nF
C3 (VHI OSC)
68 pF
C41 (BS2)
2.2 nF
C4 (VHI OSC)
Open
C42 (BS1)
2.2 nF
C5 (VLO OSC C)
1 pF
C43 (BS3)
2.2 nF
C6 (VLO OSC B)
1 pF
C44 (BS4)
2.2 nF
C7 (VLO OSC)
47 pF
L1 (VHI OSC)
φ2,4 mm, 4T, wire 0,4 mm
C8 (VLO OSC)
3 pF
L2 (VLO OSC)
φ3 mm, 8T, wire 0,32 mm
C9 (UHF OSC B1)
1.5 pF
L3 (UHF OSC)
φ3 mm, 2T, wire 0,4 mm
C10 (UHF OSC C1)
1.5 pF
L4 (UHF OSC)
φ2 mm, 3T, wire 0,4 mm
C11 (UHF OSC C2)
1.5 pF
L5 (MIXOUT)
φ2,4 mm, 16T, wire 0,26 mm
C12 (UHF OSC B2)
1.5 pF
L6 (MIXOUT)
φ2,4 mm, 16T, wire 0,26 mm
C13 (UHF OSC)
12 pF
R1(VHI OSC)
33 kΩ
C14 (UHF OSC)
100 pF
R2 (VLO OSC)
33 kΩ
C16 (VTU)
2.2 nF/50 V
R3 (UHF OSC)
22 kΩ
C17 (VTU)
2.2 nF/50 V
R4 (UHF OSC)
33 kΩ
C18 (VTU)
2.2 nF/50 V
R5 (VTU)
22 kΩ
C20 (IF OUT1)
2.2 nF
R7 (CP)
22 kΩ
C21 (VCC)
4.7 nF
R8 (VTU)
22 kΩ
C22 (CP)
2.2 nF
R10 (SCL)
330 Ω
C23 (CP)
0.1 µF/50 V
R11 (SDA)
330 Ω
C24 (VTU)
2.2 nF/50 V
R12 (AS)
330 Ω
C25 (IF OUT2)
2.2 nF
R14 (MIXOUT)
0
C27 (XTAL)
68 pF
R18 (UHF OSC)
0
C28 (SCL)
Open
R19 (UHF OSC)
0
C29 (SDA)
Open
R21 (IF OUT1)
Open
C30 (AS)
Open
R22 (IF OUT2)
51 Ω
C33 (MIXOUT)
Open
U1
SN761681
C34 (MIXOUT)
22 pF
VC1 (VHI OSC)
1T363A
C35 (MIXOUT)
Open
VC2 (VLO OSC)
1T363A
C36 (MIXOUT)
4.7 nF
VC3 (UHF OSC)
1T363A
C38 (UIN1)
2.2 nF
X1
4-MHz crystal
14
SN761681
TV TUNER IC
www.ti.com
SLES165 – DECEMBER 2005
Test Circuits
DUT
SG
VHF RF IN
50 W
50 W
IF OUT1
VIN
Spectrum
Analyzer
VOUT Diff
VOUT
IF OUT2
50 W
Gc = 20log(VOUT Diff/VIN)
= 20log(VOUT/VIN) + 6
50 W
S0144-02
Figure 18. VHF-Conversion Gain-Measurement Circuit
DUT
SG
UHF RF IN1
50 W
50 W
VIN
IF OUT1
UHF RF IN2
Spectrum
Analyzer
VOUT Diff
VOUT
IF OUT2
50 W
Gc = 20log(VOUT Diff/VIN)
= 20log(VOUT/VIN) + 6
50 W
S0145-01
Figure 19. UHF-Conversion Gain-Measurement Circuit
NF
Meter
Noise
Source
DUT
B0090-01
Figure 20. Noise-Figure Measurement Circuit
Signal
Generator
fdes: P = 80 dBmV
Signal
Generator
Mix
Pad
fdes ±6 MHz
AM 30%, 1 kHz
DUT
Modulation
Analyzer
B0091-01
Figure 21. 1% Cross-Modulation Distortion Measurement Circuit
15
SN761681
TV TUNER IC
www.ti.com
SLES165 – DECEMBER 2005
TYPICAL CHARACTERISTICS
Band-Switch Driver Output Voltage (BS1–BS4)
BS OUTPUT CURRENT
vs
OUTPUT VOLTAGE
5
VCC = 5.5 V
VCC = 5 V
VSS − Supply Voltage − V
4
VCC = 4.5 V
3
2
1
0
−2
−4
−6
−8 −10 −12 −14 −16 −18 −20
IBS − BS Current IBS −mA
G001
Figure 22. Band-Switch Driver Output Voltage
S-Parameter
1
0
¥
50 MHz
400 MHz
1
M0047-04
Figure 23. VHF Input
16
SN761681
TV TUNER IC
www.ti.com
SLES165 – DECEMBER 2005
TYPICAL CHARACTERISTICS (continued)
1
0
¥
900 MHz
350 MHz
1
M0047-05
Figure 24. UHF Input
1
60 MHz
30 MHz
0
¥
1
M0047-06
Figure 25. IF Output
17
PACKAGE OPTION ADDENDUM
www.ti.com
19-Sep-2011
PACKAGING INFORMATION
Orderable Device
Status
(1)
Package Type Package
Drawing
Pins
Package Qty
Eco Plan
(2)
Lead/
Ball Finish
MSL Peak Temp
(3)
Samples
(Requires Login)
SN761681DBT
ACTIVE
TSSOP
DBT
30
TBD
Call TI
Call TI
SN761681DBTG4
ACTIVE
TSSOP
DBT
30
TBD
Call TI
Call TI
SN761681DBTR
ACTIVE
TSSOP
DBT
30
2000
Green (RoHS
& no Sb/Br)
CU NIPDAU Level-2-260C-1 YEAR
SN761681DBTRG4
ACTIVE
TSSOP
DBT
30
2000
Green (RoHS
& no Sb/Br)
CU NIPDAU Level-2-260C-1 YEAR
(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), Pb-Free (RoHS Exempt), 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.
Pb-Free (RoHS Exempt): This component has a RoHS exemption for either 1) lead-based flip-chip solder bumps used between the die and package, or 2) lead-based die adhesive used between
the die and leadframe. The component is otherwise considered Pb-Free (RoHS compatible) as defined above.
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.
Important Information and Disclaimer:The information provided on this page represents TI's knowledge and belief as of the date that it is provided. TI bases its knowledge and belief on information
provided by third parties, and makes no representation or warranty as to the accuracy of such information. Efforts are underway to better integrate information from third parties. TI has taken and
continues to take reasonable steps to provide representative and accurate information but may not have conducted destructive testing or chemical analysis on incoming materials and chemicals.
TI and TI suppliers consider certain information to be proprietary, and thus CAS numbers and other limited information may not be available for release.
In no event shall TI's liability arising out of such information exceed the total purchase price of the TI part(s) at issue in this document sold by TI to Customer on an annual basis.
Addendum-Page 1
PACKAGE MATERIALS INFORMATION
www.ti.com
20-Oct-2010
TAPE AND REEL INFORMATION
*All dimensions are nominal
Device
SN761681DBTR
Package Package Pins
Type Drawing
TSSOP
DBT
30
SPQ
Reel
Reel
A0
Diameter Width (mm)
(mm) W1 (mm)
2000
330.0
16.4
Pack Materials-Page 1
6.95
B0
(mm)
K0
(mm)
P1
(mm)
8.3
1.6
8.0
W
Pin1
(mm) Quadrant
16.0
Q1
PACKAGE MATERIALS INFORMATION
www.ti.com
20-Oct-2010
*All dimensions are nominal
Device
Package Type
Package Drawing
Pins
SPQ
Length (mm)
Width (mm)
Height (mm)
SN761681DBTR
TSSOP
DBT
30
2000
346.0
346.0
33.0
Pack Materials-Page 2
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