SN761677 Datasheet | etcTI





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SN761677 Datasheet PDF

Part Number SN761677
Description TV/VCR TUNER IC
Manufacture etcTI
Total Page 22 Pages
PDF Download Download SN761677 Datasheet

Features: Datasheet pdf www.ti.com SN761677 SLES066A – DECEMB ER 2002 TV/VCR TUNER IC WITH DC/DC CONV ERTER FEATURES D Single Chip Mixer/Osc illator, Synthesizer, and 30-V DC/DC Co nverter for Tuning Amplifier D VHF-L, V HF-H, UHF 3-Band Local Oscillator D I2C Bus Protocol D Four Data Bytes Transmi ssion D Low Noise DC/DC Converter D 4ch NPN Emitter Follower Type Band Switch Drivers D 4ch NPN Open Collector Type P orts D Programmable Reference Divider R atio (31.25 kHz, 50 kHz, or 62 kHz) D 5 -V Power Supply D 38-Pin TSSOP Package DESCRIPTION The SN761677 is a single-ch ip synthesized tuner IC designed for TV /VCR tuning systems. The circuit consis ts of a PLL synthesizer, 3-band local o scillators and mixer, 30-V dc/dc conver ter for tuning the amplifier, four NPN emitter follower band drivers, four NPN open collector ports, and is available in a small package outline. The 15-bit programmable counter and reference div ider are controlled by I2C bus control. Tuning step frequency is selectable by the reference divider rat.

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SN761677 Datasheet
www.ti.com
SN761677
SLES066A – DECEMBER 2002
TV/VCR TUNER IC WITH DC/DC CONVERTER
FEATURES
D Single Chip Mixer/Oscillator, Synthesizer, and
30-V DC/DC Converter for Tuning Amplifier
D VHF-L, VHF-H, UHF 3-Band Local Oscillator
D I2C Bus Protocol
D Four Data Bytes Transmission
D Low Noise DC/DC Converter
D 4ch NPN Emitter Follower Type Band Switch
Drivers
D 4ch NPN Open Collector Type Ports
D Programmable Reference Divider Ratio
(31.25 kHz, 50 kHz, or 62 kHz)
D 5-V Power Supply
D 38-Pin TSSOP Package
DESCRIPTION
The SN761677 is a single-chip synthesized tuner IC
designed for TV/VCR tuning systems. The circuit consists
of a PLL synthesizer, 3-band local oscillators and mixer,
30-V dc/dc converter for tuning the amplifier, four NPN
emitter follower band drivers, four NPN open collector
ports, and is available in a small package outline. The
15-bit programmable counter and reference divider are
controlled by I2C bus control. Tuning step frequency is
selectable by the reference divider ratio for a 4-MHz Xtal
oscillator.
DA PACKAGE (TOP VIEW)
38-PIN TSSOP (DA)
VLO OSC B
VLO OSC C
OSC GND
VHI OSC B
VHI OSC C
UHF OSC B1
UHF OSC C1
UHF OSC C2
UHF OSC B2
IF GND
IF OUT1
IF OUT2
VCC
CP
VTU
TUVCC(5V)
TUGND
VDC(DC/DCout)
XTAL
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
38 UHF RF IN2
37 UHF RF IN1
36 VHF RF IN2
35 VHF RF IN1
34 RF GND
33 MIX OUT2
32 MIX OUT1
31 BS1
30 BS2
29 BS3
28 BS4
27 P5
26 ADC/TEST
25 P6
24 AS
23 SDA
22 SCL
21 P7
20 P8
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 Texas Instruments standard warranty.
Production processing does not necessarily include testing of all parameters.
Copyright 2002, Texas Instruments Incorporated

SN761677 Datasheet
SN761677
SLES066A DECEMBER 2002
www.ti.com
These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam during
storage or handling to prevent electrostatic damage to the MOS gates.
ABSOLUTE MAXIMUM RATINGS
over operating free-air temperature range unless otherwise noted(1)
Supply voltage (2), VCC
Input voltage 1 (2), VGND
Input voltage 2 (2), V(VTU)
Input voltage 3 (2), VIN
Continuous total dissipation (3), PD
VCC, TUVCC
RF GND, OSC GND, TUGND
VTU (4)
Other input pins
TA 25°C
Operating freeair temperature, TA
Storage temperature range, Tstg
Maximum junction temperature, TJ
Maximum lead temperature 1,6 mm (1/16 inch) from case for 10 seconds
UNIT
0.4 V to 7 V
0.4 V to 0.4 V
0.4 V to 35 V
0.4 V to 7 V
1168 mW
20°C to 85°C
65°C to 150°C
150°C
260°C
Maximum short circuit time, tSC(max)
All pins to VCC/TUVCC, IFGND, OSCGND, RFGND, TUGND
10 sec
(1) Stresses beyond those listed under absolute maximum ratingsmay 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 conditionsis not
implied.Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
(2) Voltage values are with respect to the IF GND of the circuit.
(3) Derating factor is 9.34 mW/°C for TA 25°C.
(4) 30 V max, when input from external power supply.
RECOMMENDED OPERATING CONDITIONS
Supply voltage, VCC
Band switch driver source current, IBS
NPN port sink current, INPN
Operating free-air temperature, TA
One port on
One port on
MIN NOM MAX UNIT
4.5 5 5.5 V
10 mA
10 15 mA
20 85 °C
CAUTION:
It is advised that precautions be taken to avoid damage due to high static voltages or electrostatic fields while handling this device. UHF
OSC (pins 69) can withstand 1.5 kV and all other pins can withstand 2 kV, according to the Human Body Model (1.5 k, 100 pF).
2




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