AN7289NSC [PANASONIC]
FM-FEAM IC for car radio; FM- FEAM IC，适用于车载收音机
| 型号： | AN7289NSC |
| 厂家： | 
PANASONIC |
| 描述： | FM-FEAM IC for car radio |
| 文件： | 总4页 (文件大小：60K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
ICs for FM/AM Tuner
AN7289NSC
FM-FE+AM IC for car radio
■ Overview
Unit: mm
17.81±0.3
The AN7289NSC is an IC having FM-FE+AM
functions for car radio. A tuner block of car radio
can be constructed by combination of this IC and
the AN7293NSC / NFBQ.
32
17
■ Features
• A less number of electrolytic capacitors is required
(3 capacitors reduction compared with our con-
ventional IC)
1
16
0.15
• AM: Practical sensitivity is improved by 2 dB by
ATC
• AM: Strong input characteristics is improved by
2-loop AGC function
1.23
0.35±0.1
1.0
Seating plane
SSOP032-P-0375
■ Applications
• Car radios
■ Block Diagram
FE
OSC
AM
OSC
FM
AGC
FM
mix.
AM
RF-AGC
AM
mix.
FM/AM SW
AM.S-meter
FM
IF-amp.
AM
ATC
AM
IF-AGC
AM
det.
AM
SSC
AM
IF-amp.
1
AN7289NSC
ICs for FM/AM Tuner
■ Pin Description
Pin No.
Description
Pin No.
18
Description
1
2
FM-keyed-AGC input
AM-AF output / LO setting
AM-ATC input
FM-IF input
19
AM-RF gain control
AM-mix. input
3
20
4
AM-IF level detection
AM detection output
VCC1
21
FM-PIN-diode driver
AM-OSC coil pin
FM-mix. output (2)
FM-mix. output (1)
FM-PIN-diode driver
FM-mix. input
5
22
6
23
7
AM-IF counter output / DX / LO SW
AM-SD output
24
8
25
9
AM-signal meter output
FM-IF output
26
10
11
12
13
14
15
16
17
27
VCC2 / FM / AM SW
FM-AGC output
AM-IF output
28
GND1
29
FM-OSC buffer output
SSC
30
AM-OSC buffer output / FE-AGC
sensitivity setting
AM-RF level detection
AM-WAGC detection / DX setting
AM-IF input
31
32
GND2
FM-OSC coil pin
AM-mix. output
■ Absolute Maximum Ratings
Parameter
Symbol
VCC
ICC
Rating
Unit
V
Supply voltage
9.1
56
Supply current
mA
mW
°C
2
Power dissipation *
PD
380.2
1
Operating ambient temperature *
Topr
Tstg
−35 to +80
1
Storage temperature *
−55 to +125
°C
:
Note) 1 Except for the power dissipation, operating ambient temperature, and storage temperature, all ratings are for T = 25°C.
*
a
2: T = 80°C
*
a
■ Recommended Operating Range
Parameter
Supply voltage
Symbol
VCC
Range
Unit
7.2 to 9.0
V
2
ICs for FM/AM Tuner
AN7289NSC
■ Electrical Characteristics at Ta = 25°C
1. AM mode VCC = 8.0 V, fIN = 1 MHz
AM tuning condition: OSC output frequency = 1 450 kHz ±500 Hz
Parameter
AM consumption current
AM-AF output
Symbol
amIt1
Conditions
Without input
Min
28
Typ Max
Unit
mA
mA
36
44
amVO
AM-AF output at VIN2 = 74 dBµ,
100
125
155
400 Hz 30%
AM signal-to-noise ratio
AM-AGC width
amSN
amW
AM-AF output S/N at VIN2 = 74 dBµ, 48
400 Hz 30%
52
59
58
63
dB
dB
dB
AM-AF output when input changes
55
−10 dB at VIN2 = 74 dBµ, 400 Hz 30%
AM-ATC operation
amATC (Output ratio [dB] of 400 Hz and
3 kHz when VIN2 = 18 dBµ) − (Output
ratio [dB] of 400 Hz and 3 kHz when
3.5
6.5
9.5
VIN2 = 74 dBµ) 80% Mod., AM-AF Out
output
AM-distortion 1
amT1
amT2
amVW
VIN2 = 74 dBµ 400 Hz 80%
AM-AF output distortion
0.01
0.01
97
0.5
0.5
1.5
1.5
%
%
AM-distortion 2
VIN2 = 130 dBµ 400 Hz 80%
AM-AF output distortion
AM wide band AGC on input
fIN2 = 1.4 MHz Input when pin 15
103
109
dBµ
voltage becomes below 3 V
AM local oscillation buffer output amVOS Without input
160
150
210
210
260
270
10
mV
mV
mV
V
AM-IF count output 1
AM-IF count output 2
AM-SD output 1
amIF1
amIF2
VIN2 = 40 dBµ
Without input
amSD1 VIN2 = 40 dBµ
4.5
0.0
1
4.9
0.2
50
5.1
0.5
200
1.2
5.1
36
AM-SD output 2
amSD2 Without input
V
AM signal meter output 1
AM signal meter output 2
AM signal meter output 3
AM search sensitivity DX
amVS1 Without input, pin 9 voltage
amVS2 Pin 9 voltage at VIN2 = 30 dBµ
amVS3 Pin 9 voltage at VIN2 = 130 dBµ
mV
V
0.7
4.1
24
0.95
4.8
30
V
amDX AM-IF count output is 120 mV or over
dBµ
VIN2 when f becomes 450 kHz ±2 kHz
AM search sensitivity LO
amLO
AM-IF count output is 120 mV or over
44
50
56
dBµ
VIN2 when f becomes 450 kHz ±2 kHz
3
AN7289NSC
ICs for FM/AM Tuner
■ Electrical Characteristics at Ta = 25°C (continued)
2. FM mode VCC = 8.0 V, fIN1 = 98 MHz
FM tuning condition: OSC output frequency = 108.7 MHz ±10 kHz
Parameter
Symbol
Conditions
Min
140
50
Typ Max
Unit
mV
mV
dBµ
V
FM local oscillation buffer output fmVOS fOSC = 108.7 MHz without input
200
95
260
140
67
FM-IF output level
fmIF
VIN1 = 71 dBµ
FM-AGC sensitivity
FM-AGC voltage (high)
FM-AGC voltage (low)
FM consumption current
fmAGC VIN1 level when V28 becomes 3 V
59
63
fmVaH VIN1 = 70 dBµ V28
6.0
6.4
0.05
35
6.8
0.5
44
fmVaL
fmIt
VIN1 = 82 dBµ V28
V
Without input
26
mA
■ Application Circuit Example
AM-VT
V
fOSC
aOSC
V
FE-VT
FE
OSC
AM
OSC
FM
AGC
FM
mix.
AM
RF-AGC
AM
mix.
FM/AM SW
AM.S-meter
FM
IF-amp.
AM
ATC
AM
IF-AGC
AM
det.
AM
SSC
AM
IF-amp.
KEYED-AGC In
VCC
4
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