SANYO LA1828 Datasheet
Ordering number : EN5837
LA1828
Monolithic Linear IC
LA1828
Single-Chip Tuner IC for Portable Radio
/Cassette Recorders with Manual Tuning
Functions
• AM: RF amplifier, mixer, oscillator, IF
amplifier, detector, AGC, tuning display
output
• 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 Ω
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 kΩ
11
R
IN
2
A10255
Internal load impedance
R = 16.6 kΩ
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
Loading...