AN7299S PANASONIC
Document overview
- Manufacturer or author: Provided By digicamel.com
- PDF pages: 4
Technical content
Antenna diversity IC for car TV n Overview The AN7299S is an antenna diversity IC for car TV. A noise detection circuit and an antenna changeover circuit are integrated on one chip. n Features
- Built-in vertical and horizontal synchronizing circuit
- Built-in antenna fixing function
- It outputs a composite synchronous signal n Applications
- Car TVs n Block Diagram SOP024-P-0375A 0.3 7.2–0.3 9.4–0.3 0.15 0.925 2.0–0.2 15.3–0.3 Unit : mm 1st noise amp. 2nd noise amp. ANT select switch ANT switch driver ANT select decoderANT select control ANT switch control Video clamp Noise comparator Phase detector divider ANT choice Sync separater Sync control Horizontal OSC V-sync separater Vertical OSC Charge pump VCO
Parameter Symbol Rating Unit Supply voltage V CC 5.5 V Supply current I CC 25 mA Power dissipation *2 PD 180 mW Operating ambient temperature *1 T opr -35 to +85 °C Storage temperature *1 Tstg -55 to +125 °C n Pin Descriptions n Absolute Maximum Ratings Note) *1 : All items are at Ta = 25°C, except for the operating ambient temperature and storage temperature. *2: T a = 85°C Pin No. Description
1 Antenna selection level-hold capacitor
2 Sync separation video signal input
3 Horizontal synchronizing signal AFC output
4 Horizontal synchronizing signal oscillation
5 Horizontal synchronizing signal output
6 Composite synchronizing signal output
7 Vertical synchronizing signal output
8 GND
9 Vertical synchronizing signal separation
10 Vertical synchronizing signal oscillation
11 Charge pump integral time-constant setting
Pin No. Description
12 VCO oscillation time-constant setting
13 Antenna selection output 4
14 Antenna selection output 3
15 Antenna selection output 2
16 Antenna selection output 1
17 Power supply
18 Noise comparator level setting
/Antenna fixing
19 Noise level hold capacitor
20 Noise comparator input
21 2nd noise amplifier output
22 Video clamp input
23 1st noise amplifier output
24 Video signal input
n Recommended Operating Range Parameter Symbol Range Unit Supply voltage V CC 4.5 to 5.5 V
n Electrical Characteristics at VCC = 5 V ,Ta = 25°C Parameter Symbol Conditions Min Typ Max Unit Quiescent current without load ISCC ¾ 8.5 11.9 17.7 mA 1st amplifier voltage gain A N1 V IN = 10 mV PP, f = 10 kHz 15.3 17.0 18.2 dB 1st amplifier input clamp voltageV CL1 Pin 24 DC voltage 1.87 2.00 2.15 V 1st amplifier output bias voltage VNOB1 Pin 23 DC voltage 2.11 3.07 3.86 V 2nd amplifier voltage gain A N2 V IN = 10 mV[p-p], f = 10 kHz, 16.3 17.5 18.5 dB at 2nd amp. active 2nd amplifier input clamp V CL2 Pin 22 DC voltage 1.96 2.11 2.29 V voltage at 2nd amp. active 2nd amplifier output bias voltageV NOB2 Pin 21 DC voltage 0.78 1.51 2.10 V at 2nd amp. active Noise hold input bias current INHB Pin 19 DC current 40.0 110.0 240.0 nA Noise comparator I NCB Pin 20 DC current 200.0 426.0 820.0 nA input bias current Noise level setting I NRB Pin 18 DC current 350.0 548.0 950.0 nA input bias current Antenna input amplifier A C V IN = 50 mV[p-p], f = 10 kHz, 4.5 5.5 6.4 dB voltage gain at input amp. active Level hold V LOB Pin 1 DC voltage 0.94 1.43 1.91 V output bias voltage at input amp. active Level hold I LOB Pin 1 DC voltage 20.0 56.4 100.0 nA output bias current at input amp. non-active Sync separation input clamp V SCL Pin 2 DC voltage 2.92 3.13 3.32 V voltage Sync separation comparator I SCN Pin 2 DC current 93.0 116.9 149.3 mA on-state current when pin 6 becomes low to high Composite sync separation I VH Pin 6 current, when pin 6 voltage 1.0 5.0 ¾ mA output sink current becomes lower than 0.5 V Vertical sync separation block VVSON Applied voltage to pin 9 3.94 4.17 4.40 V on-state voltage when pin 7 becomes low to high Vertical synchronization time IVSN RSET = 100 kW , pin 9 DC current 8.82 12.19 17.71 mA constant sink current Vertical synchronization time IVSP RSET = 10 kW , pin 9 DC current 42.57 51.14 62.64 mA constant source current Vertical synchronizing oscillationV VON Applied voltage to pin 10 2.78 2.94 3.15 V block on-state voltage when pin 7 becomes low to high Vertical synchronizing oscillationV VSW Difference between pin 10 0.83 0.90 1.01 V block schmidt voltage DC voltage and V VON high to low Vertical synchronizing oscillationV VLON Applied voltage to pin 10 2.47 2.65 2.79 V block on-state voltage when pin 7 becomes low to high Vertical synchronization output IV Pin 7 current, when pin 7 voltage 1.0 5.0 ¾ mA sink current becomes 0.5 V or less
n Electrical Characteristics at VCC = 5 V ,Ta = 25°C Parameter Symbol Conditions Min Typ Max Unit Horizontal synchronizing V HON Applied voltage to pin 4 2.80 3.00 3.18 V oscillation block on-state voltage when pin 5 becomes low to high Horizontal synchronizing V HSW Applied voltage to pin 4 0.82 0.94 1.05 V oscillation block schmidt voltage when Pin 5 becomes high to low AFC sink current I HAN V 4 = VL , pin 3 DC current 127.2 160.0 206.0 mA AFC source current I HAP V 4 = VH , Pin 3 DC current 124.1 158.0 206.6 mA Horizontal synchronization I H Pin 5 current, when pin 5 voltage 1.0 5.0 ¾ mA sink current becomes under 0.5 V Antenna switch I AS Antenna selection output pin 10.0 30.0 ¾ mA output sink current on-state time DC current VCO time constant sink current IVCN V 12 = 1.5 V, pin 12 current 81.40 115.0 166.3 mA VCO time constant source currentIVCP V 12 = 4 V, pin 12 current 81.40 114.8 166.3 mA Charge pump sink current I CCN Pin 11 current after test signal 1 input 80.39 101.7 138.2mA Charge pump source current I CCP Pin 11 current after test signal 2 input 80.39 108.3 138.2mA n Application System Example Diversity control Tuner Antenna changeover SIF/VIF AN7299S Sound signal control Sound output Video signal processing Video color signal processing Chroma signal output Y driver Control circuit X driver Sound multiplex noise canceler LCD panel