SANYO LA1828 Datasheet

Ordering number : EN5837
LA1828
Monolithic Linear IC
LA1828
Single-Chip Tuner IC for Portable Radio
/Cassette Recorders with Manual Tuning
Functions
• FM-FE: RF amplifier, mixer, oscillator
• FM-IF: IF amplifier, quadrature detector, signal strength meter, tuning display output
• MPX: PLL stereo decoder, stereo display output, forced mono, internal VCO
Features
• Single-chip tuner with AM, FM-FE/FM-IF, MPX
circuitry
• Built-in adjustment-free MPX-VCO (noceramic
oscillator required)
• Reduced FM-FE oscillation level
• FM stereo indication and AM/FM tuning indication
outputs can directly drive LEDs
Specifications
Maximum Ratings at Ta = 25°C
V
Maximum supply voltage Indicator drive current Allowable power dissipation Operating temperature Storage temperature
max
CC
I
LED
Pd max
Topr
Tstg
pins 8, 9
Ta 70°C
Package Dimensions
unit:mm
3067-DIP24S
[LA1828]
24
±
0.25
0.81 1.78
Conditions
1
±
0.25
0.48
21.2
±
0.25
+0.15
-0.05
[LA1828]
±
0.95
13
0.25
±
0.25
±
6.4
7.62
12
0.1
±
max
3.25
3.9
0.25
±
min
3.3
0.51
0.15
SANYO:DIP24S
SANYO:DIP24S
+0.15
-0.05
0.25
Ratings UnitSymbolParameter
7.0
V
20
mA
300
mW
–20 to +70
–40 to +125
°C °C
Operating Conditions at Ta = 25°C
Parameter
Recommended supply voltage Operating supply voltage range
Symbol
V
CC
VCCop
Conditions
Ratings
SANYO Electric Co., Ltd. Semiconductor Bussiness Headquarters
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN
51198RM(KI) No. 5837-1/13
4.5
2.5 to 6.0
Unit
V V
Ordering number : EN5837
LA1828
Operating Characteristics at Ta = 25°C, Vcc = 4.5V, in specified test circuit, using Y amaichi Electr onics socket IC-179-2
Parameter Symbol Conditions
[FM-FE characteristics]: fc = 98 MHz, fm = 1 kHz, 30% mod.
=108.7 MHz, pin 20 output
Local oscillator voltage
3 dB sensitivity Effective sensitivity
[FM-IF monaural characteristics]: fc = 10.7 MHz, fm = 1 kHz, 100% mod.
Quiescent current Demdulator output Signal-to-noise ratio Total harmonic distortion (mono) 3 dB sensitivity TU-LED sensitivity
[FM-IF stereo characteristics]: fc = 10.7 MHz, fm = 1 kHz, L+R = 90%, pilot = 10%
Separation ST-LED sensitivity Total harmonic distortion (main)
[AM characteristics]: fc = 1000 kHz, fm = 1 kHz, 30% mod.
Quiescent current Demdulator output
Signal-to-noise ratio
Total harmonic distortion
TU-LED sensitivity
V
OSC
3dB LS
Qs
(FM)
I
CCO
V
S/N
THD
3 dB LS
SD-ON
SEP
ST-ON
THD
I
(AM)
CCO
VO1
VO2 S/N1 S/N2
THD1 THD2
SD-ON
f
OSC
*Measured with FET buffer (-10 dB gain) 60 dBµ, 30% mod. output, -3 dB input Input for S/N = 30 dB
No input 100 dBµ, pin 16 output
O
100 dBµ, pin 16 output 100 dBµ, pin 16 output 100 dBµ, 100% mod.output, -3 dB input
100 dBµ, L-mod, pin 16/pin 17 output 100 dBµ, pilot modulation for pin 8 voltage < 0.5V 100 dBµ, main modulation, pin 16 outpu
No input 23 dBµ, pin 16 output 80 dBµ, pin 16 output 23 dBµ, pin 16 output 80 dBµ, pin 16 output 80 dBµ, pin 16 output 107 dBµ, pin 16 output
Ratings
min typ max
40 80
13 12
8
130
62
21
25
1.5
t
5 18 50 15 47
16
190
70
0.4 32 33
40
3.5
0.5
8.5 40 85 20 53
0.5
0.5 26
Unit
160 mVrms
dBµ dBµ
23
mA
260
mVrms
dB
1.2
%
42
dBµ dBµ
dB
%
6.3 %
1.2
15
mA
70
mVrms
130
mVrms
dB dB
1.3
%
1.5
%
dBµ
Pin Description and Quiescent Voltage at Vcc = 4.5V
Pin
number
1
2
Function
AM RF input
Reg
Quiescent
voltage (V)
FMAM
1.3 1.3
1.31.3
Equivalent circuit Remarks
1
2
2
A10247
A10248
AM antenna coil connected between pins 1 and 2 (reg)
V
=1.3V
reg
51198RM(KI) No. 5837-2/13
Ordering number : EN5837
Continued from preceding page
LA1828
Continued on next page
Pin
number
3 4.54.5AM-OSC
4 4.54.5VCC1
5 4.5 4.5FM mixer output
600GND1
Function
Quiescent
voltage (V)
Equivalent circuit
FMAM
3 4
A10249
4 5
A10250
Oscillator coil connected between pins 3 and 4 (V
AM/FM-IN/MPX block V Mixer coil connected
between pins 5 and 4 (V
AM/FM-IN/MPX section ground
Remarks
CC
1)
CC
1)
CC
7
AM mixer output
8 4.5 4.5Tu-LED output
ST-LED output
9 4.5 4.5
and AM-IF output
4.5 4.5
7 4
8
9
A10251
A10252
Mixer coil connected between pins 7 and 4 (V
Active low Open-collector output can directly drive LED (IC max = 20 mA)
Active low Open-collector output can directly drive LED (IC max = 20 mA) In AM operation, AM-IF signal (450 kHz) is output here.
1)
CC
A10253
Continued on next page
51198RM(KI) No. 5837-3/13
Ordering number : EN5837
Continued from preceding page
Pin
number
Function
Quiescent
voltage (V)
LA1828
Equivalent circuit Remarks
FMAM
= 330
R
IN
10
10 1.31.3FM-IF input
11 1.3 1.3AM-IF input
AM-AGC output
12 0.7 0.2
and FM S meter output
R
IN
2
A10254
RIN = 2 k
11
R
IN
2
A10255
Internal load impedance R = 16.6 k
12
R
A10256
13
Detector coil connected between pins 13 and 4 (V
1)
CC
13 4.5 4.5FM detector
Pilot tone
14 2.9 3.8
15 0 3.8
detector filter and forced mono switching
Phase comparator filter and AM/FM switching
A10257
14
A10258
15
A10259
Mono mode is forced on by connecting pin 14 to ground.
FM reception mode is enabled when pin 15 is open. AM reception mode is enabled when pin 15 is connected to ground.
Continued on next page
51198RM(KI) No. 5837-4/13
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