LA1836 [SANYO]
Single-Chip Home Stereo Electronic Tuning IC; 单芯片家用音响电子调谐IC
| 型号： | LA1836 |
| 厂家： | 
SANYO SEMICON DEVICE |
| 描述： | Single-Chip Home Stereo Electronic Tuning IC |
| 文件： | 总13页 (文件大小：535K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
Ordering number : EN4787A
Monolithic Linear IC
LA1836, 1836M
Single-Chip Home Stereo Electronic Tuning IC
Overview
Package Dimensions
AM: RF amplifier, mixer, oscillator (with ALC), IF
amplifier, detector, AGC, oscillator buffer, tuning
indicator (narrow-band SD), IF buffer output, IF output
for AM stereo
unit: mm
3196-DIP30SD
[LA1836]
• FM IF: IF amplifier, quadrature detector, band muting,
tuning indicator, IF buffer output, S-meter
• MPX: PLL stereo decoder, stereo indicator, forced
mono, VCO stop function, adjacent channel interference
rejection function (114 kHz), post-amplifier (with
muting function)
Features
• Reduced number of adjustments (adjustment-free MPX
VCO: ceramic resonator adopted)
• Tuning indicator pin (Can be used as a narrow-band stop
signal and as a muting output driver.)
• Variable FM stop sensitivity and band
• Variable AM stop sensitivity
SANYO: DIP30SD
• Built-in AM local oscillator buffer
• Variable AM low cut control
unit: mm
3073A-MFP30S
[LA1836M]
SANYO: MFP30S
SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110 JAPAN
O3097HA (OT)/82294TH (OT) B8-0904, B8-0850 No. 4787-1/13
LA1836, 1836M
Specifications
Maximum Ratings at Ta = 25°C
Parameter
Symbol
Conditions
Ratings
9.0
Unit
V
Maximum supply voltage
VCC max
At Ta ≤ 70°C, on the recommended printed circuit board*
[LA1836, LA1836M]
550
mW
Allowable power dissipation
Operating temperature
Pd max
At Ta = 70°C, independent IC [LA1836M only]
320
–20 to +70
–40 to +125
mW
°C
Topr
Tstg
Storage temperature
°C
3
Note: * An 85 × 115 × 1.6 mm glass-epoxy printed circuit board.
Operating Conditions at Ta = 25°C
Parameter
Recommended supply voltage
Symbol
VCC
Ratings
7.0
6.5 to 8.5
Unit
V
Operating supply voltage range
V
CC op
V
Electrical Characteristics at Ta = 25°C, VCC = 7.0 V unless otherwise specified
(MFP package using the Yamaichi Electric IC-51-0302-426MF socket)
Parameter
Symbol
Conditions
min
typ
max
Unit
[FM characteristics (mono): fc = 10.7 MHz, fm = 1 kHz, with the coil adjusted at VREG – VAFC = 0 V]
Quiescent current
I
CCO-FM
No input
37
1100
0
50
1460
+1.5
1.3
mA
mVrms
dB
Demodulator output
Channel balance (mono)
VO-FM
100 dBµ, 100% mod, the pin 16 output
730
C.B-mono 100 dBµ, 100% mod, the pin 16 output/pin 17 output
THD-FM (1) 100 dBµ, 100% mod, the pin 16 output
THD-FM (2) 100 dBµ, 200% mod, the pin 16 output
–1.5
0.3
1.5
80
%
Total harmonic distortion
8.0
%
S/N ratio
S/N-FM
AMR
100 dBµ, 100% mod, the pin 16 output
100 dBµ, AM 30% mod, the pin 16 output
72
40
dB
AM suppression ratio
Input limiting voltage
LED on sensitivity
LED on bandwidth
IF count buffer output
60
dB
–3dBL.S. 100 dBµ, referenced to 100% mod, a 3 dB down input
SD-On-FM
34
42
66
dBµ
dBµ
kHz
mVrms
V
46
90
80
0
56
SD-BW
100 dBµ
125
120
0.5
3.2
4.2
95
170
160
1.0
4.5
5.0
V
IFBuff-FM 100 dBµ, the pin 11 output
V
V
V
SM-FM (1) 0 dBµ, the pin 12 output
SM-FM (2) 60 dBµ, the pin 12 output
SM-FM (3) 100 dBµ, the pin 12 output
S-meter output
1.8
3.5
80
V
V
Muting attenuation
Mute-Att
100 dBµ, 100% mod, the pin 16 output
dB
[FM characteristics (stereo): fc = 10.7 MHz, fm = 1 kHz, L + R = 90%, pilot = 10%, VIN = 100 dBµ]
Separation - L
Sep-L
Sep-R
ST-on
ST-off
L mod, the pin 17 output/pin 16 output
R mod, the pin 16 output/pin 17 output
The pilot modulation such that V7 < 0.7 V
The pilot modulation such that V7 > 4.5 V
30
30
45
45
dB
dB
%
Separation - R
Stereo on level
1.8
3.6
2.5
0.3
0
6.0
Stereo off level
%
Total harmonic distortion (main)
Channel balance (main)
Capture range
THD-main The pin 16 output
1.3
%
C.B-main The pin 16 output/pin 17 output
–1.5
+1.5
dB
%
C.R
Pilot = 10%
±1.5
Adjacent channel interference
rejection ration
B.Rej.
fs = 113 kHz, Vs = 90%, pilot = 10%, the pin 16 output
40
dB
Continued on next page.
No. 4787-2/13
LA1836, 1836M
Continued from preceding page.
Parameter
Symbol
Conditions
min
typ
max
Unit
[AM characteristics: fc = 1000 kHz, fm = 1 kHz]
Quiescent current
I
CCO-AM No input
29
45
42
90
mA
mVrms
mVrms
dB
VO-AM (1) 23 dBµ, 30% mod, the pin 16 output
VO-AM (2) 80 dBµ, 30% mod, the pin 16 output
S/N-AM (1) 23 dBµ, 30% mod, the pin 16 output
S/N-AM (2) 80 dBµ, 30% mod, the pin 16 output
THD-AM (1) 80 dBµ, 30% mod, the pin 16 output
THD-AM (2) 100 dBµ, 30% mod, the pin 16 output (DIP)
THD-AM (2) 107 dBµ, 30% mod, the pin 16 output (MFP)
THD-AM (3) 80 dBµ, 80% mod, the pin 16 output
SD-On-AM
25
195
16
Detector output
310
20
490
S/N ratio
48
54
dB
0.3
0.4
0.8
1.0
30
1.0
1.2
1.6
4.0
40
%
%
Total harmonic distortion
%
%
LED on sensitivity
20
110
5
dBµ
mVrms
dB
Local oscillator buffer output
Low band attenuation
IF count buffer output
ST-IF output
V
OSC-AM 80 dBµ, 30% mod, the pin 16 output
Low-Cut Referenced to fm = 1 kHz, the output when fm = 100 Hz
IFBuff-AM 80 dBµ, unmodulated, the pin 11 output
STIF-AM 80 dBµ, unmodulated, the pin 8 output
160
7
11
280
24
V
140
8
200
17
mVrms
mVrms
V
V
V
SM-AM (1) 0 dBµ, unmodulated
SM-AM (2) 40 dBµ, unmodulated
0
0
0.2
4.5
S-meter output
V
1.3
3.0
V
No. 4787-3/13
LA1836, 1836M
Block Diagram
Unit (resistance: Ω, capacitance: F)
Test Circuit Diagram
Unit (resistance: Ω, capacitance: F)
No. 4787-4/13
LA1836, 1836M
Pin Functions
Pin No.
Function
Voltage
Internal equivalent circuit
Remarks
VREG
Input impedance ri = 330 Ω
1
2
3
4
FM IF input
VCC
AM mixer output
FM IF input bypass
REG
VREG
Also used for the AM noise filter
VREG
VREG = 3.6 V
VREG
Input impedance ri = 2 kΩ
5
6
AM IF input
GND
0 V
Tu – LED
Active low
Open collector
AM stereo IF output (pin 8)
VCC
7
8
ST – LED, AM – IF
output
VCC
Recommended detector coil: 600TEAS-8199Z
VCC
VCC
0 V
9
FM detector
(Toko)
SA281 (Sumida)
VCC
10
11
The post-amplifier muting turns on for applied
voltages of 1.3 V and over.
AM/FM IF buffer output,
output control SW
(muting switch)
The IF buffer output turns on at 4.0 V and over.
Recommended muting on control voltage: 1.9 V
Continued on next page.
No. 4787-5/13
LA1836, 1836M
Continued from preceding page.
Pin No.
Function
Voltage
Internal equivalent circuit
Remarks
The AM SD sensitivity can be adjusted with the
resistor between this pin and ground.
S-meter output, AM SD
sensitivity adjustment
0.5 V (FM)
0 V (AM)
12
The AM SD sensitivity should be adjusted first,
since the FM SD sensitivity is affected by this
adjustment.
AM narrow band CF
connection
Recommended narrow band CF: BFU450C4N
(Murata)
13
14
15
1.5 V
VCC – 1.4
(FM)
Phase comparator low-
pass filter
(FM/AM switch)
AM mode selected when this pin is connected to
ground.
0 V (AM)
The circuit is forced to mono when a current of
50 µA or larger flows from this pin.
Pilot detector low-pass
filter (forced mono)
(VCO stop)
V
CC – 1.0
Connecting this pin to ground stops the VCO.
Output impedance ro = 200 Ω
Pin 16: left output
Pin 17: right output
VREG
VREG
16
17
Post-amplifier L output
and R output
Inverting inputs: ri = 3.3 kΩ
Pin 18: left input
Pin 19: right input
VREG
VREG
18
19
Post-amplifier L input
and R input
Output impedance ro = 3.3 kΩ
Pin 20: left de-emphasis
Pin 21: right de-emphasis
20
21
3.5 V
3.5 V
MPX output, L output
and R output
Input impedance ri = 20 kΩ
The low-band separation characteristics are
improved by increasing the value of the capacitor
connected between this pin and pin 24. However,
the impulse noise associated with AM/FM
switching will increase.
22
MPX input
2.9 V
Continued on next page.
No. 4787-6/13
LA1836, 1836M
Continued from preceding page.
Pin No.
Function
Voltage
Internal equivalent circuit
Remarks
3.5 V (FM)
0 V (AM)
Recommended ceramic resonator: CSB456F15
(Murata)
23
MPX VCO
Output impedance: 1.5 kΩ (FM), 10 kΩ (AM)
The separation can be adjusted with the external
capacitor connected between this pin and
ground.
AM/FM demodulator
output
2.9 V (FM)
3.0 V (AM)
24
25
26
27
28
The AF demodulation frequency low area
frequency characteristics can be adjusted with
the external capacitor connected between this
pin and ground. The AM detector output can be
attenuated by connecting a resistor in series with
this capacitor.
2.9 V (FM)
3.0 V (AM)
AM low cut
AM AGC
AM RF input
AFC
0 V (FM)
0.5 V (AM)
Internal load resistance: R = 6.7 kΩ
This pin must be used at the same potential as
pin 4.
VREG
The FM-SD bandwidth can be adjusted with the
external resistor connected between this pin and
pin 4.
VREG
The oscillator coil is connected between this pin
and pin 4.
VREG
29
OSC
The FM SD sensitivity can be adjusted with the
external resistor connected between this pin and
ground.
Oscillator buffer output,
FM SD sensitivity
adjustment
1.6 V (FM)
1.3 V (AM)
30
Output impedance ro = 200 Ω
No. 4787-7/13
LA1836, 1836M
No. 4787-8/13
LA1836, 1836M
No. 4787-9/13
LA1836, 1836M
No. 4787-10/13
LA1836, 1836M
No. 4787-11/13
LA1836, 1836M
No. 4787-12/13
LA1836, 1836M
■ No products described or contained herein are intended for use in surgical implants, life-support systems, aerospace
equipment, nuclear power control systems, vehicles, disaster/crime-prevention equipment and the like, the failure of
which may directly or indirectly cause injury, death or property loss.
■ Anyone purchasing any products described or contained herein for an above-mentioned use shall:
➀ Accept full responsibility and indemnify and defend SANYO ELECTRIC CO., LTD., its affiliates, subsidiaries and
distributors and all their officers and employees, jointly and severally, against any and all claims and litigation and all
damages, cost and expenses associated with such use:
➁ Not impose any responsibility for any fault or negligence which may be cited in any such claim or litigation on
SANYO ELECTRIC CO., LTD., its affiliates, subsidiaries and distributors or any of their officers and employees
jointly or severally.
■ Information (including circuit diagrams and circuit parameters) herein is for example only; it is not guaranteed for
volume production. SANYO believes information herein is accurate and reliable, but no guarantees are made or implied
regarding its use or any infringements of intellectual property rights or other rights of third parties.
This catalog provides information as of October, 1997. Specifications and information herein are subject to
change without notice.
No. 4787-13/13
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