LA1828

51198RM(KI) No. 5837-1/13

Ordering number : EN5837

LA1828

Single-Chip Tuner IC for Portable Radio

/Cassette Recorders with Manual Tuning

Monolithic Linear IC

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

Package Dimensions

unit:mm

3067-DIP24S

0.48

3.25

3.3

3.9

max

0.51

min

21.2

0.81

1.78

0.25

7.62

6.4

0.95

0.25

0.15

0.1

0.25

+0.15 -0.05

0.25

+0.15

-0.05

SANYO:DIP24S

[LA1828]

Specifications

Maximum Ratings

at Ta = 25

Ratings

Unit

Symbol

Parameter

Maximum supply voltage

Indicator drive current

Allowable power dissipation

Operating temperature

Storage temperature

7.0

300

20 to +70

40 to +125

max

LED

pins 8, 9

Pd max

Topr

Tstg

Conditions

Operating Conditions

at Ta = 25

Symbol

Conditions

Ratings

Unit

Parameter

Recommended supply voltage

Operating supply voltage range

4.5

2.5 to 6.0

SANYO Electric Co., Ltd. Semiconductor Bussiness Headquarters

TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN

[LA1828]

SANYO:DIP24S

LA1828

51198RM(KI) No. 5837-2/13

Ordering number : EN5837

Operating Characteristics

at Ta = 25

C, Vcc = 4.5V, in specified test circuit, using Yamaichi Electronics socket IC-179-2

Parameter

Symbol

Conditions

Ratings

min

typ

max

Unit

160

mVrms

130

190

0.4

260

1.2

mVrms

1.5

3.5

0.5

6.3

1.2

[AM characteristics]: fc = 1000 kHz, fm = 1 kHz, 30% mod.

Quiescent current

Demdulator output

Signal-to-noise ratio

Total harmonic distortion

TU-LED sensitivity

Separation

ST-LED sensitivity

Total harmonic distortion (main)

[FM-IF stereo characteristics]: fc = 10.7 MHz, fm = 1 kHz, L+R = 90%, pilot = 10%

Quiescent current

Demdulator output

Signal-to-noise ratio

Total harmonic distortion (mono)

3 dB sensitivity

TU-LED sensitivity

Local oscillator voltage

3 dB sensitivity

Effective sensitivity

[FM-FE characteristics]: fc = 98 MHz, fm = 1 kHz, 30% mod.

[FM-IF monaural characteristics]: fc = 10.7 MHz, fm = 1 kHz, 100% mod.

CCO

(AM)

S/N1

S/N2

THD1

THD2

SD-ON

No input

23 dB

, pin 16 output

80 dB

, pin 16 output

23 dB

, pin 16 output

80 dB

, pin 16 output

80 dB

, pin 16 output

107 dB

, pin 16 output

8.5

0.5

130

1.3

1.5

mVrms

CCO

(FM)

S/N

THD

3 dB LS

SD-ON

No input

100 dB

, pin 16 output

100 dB

, pin 16 output

100 dB

, pin 16 output

100 dB

, 100% mod.output, -3 dB input

SEP

ST-ON

THD

100 dB

, L-mod, pin 16/pin 17 output

100 dB

, pilot modulation for pin 8 voltage < 0.5V

100 dB

, main modulation, pin 16 output

OSC

3dB LS

OSC

=108.7 MHz, pin 20 output

*Measured with FET buffer (-10 dB gain)

60 dB

, 30% mod. output, -3 dB input

Input for S/N = 30 dB

Pin Description and Quiescent Voltage

at Vcc = 4.5V

number

Function

Quiescent

voltage (V)

Equivalent circuit

Remarks

1.3

AM RF input

Reg

AM antenna coil connected

between pins 1 and 2 (reg)

reg

=1.3V

A10247

A10248

LA1828

51198RM(KI) No. 5837-3/13

Ordering number : EN5837

Continued on next page

Continued from preceding page

number

Function

Quiescent

voltage (V)

Equivalent circuit

Remarks

4.5

AM-OSC

4.5

GND1

4.5

FM mixer output

Mixer coil connected

between pins 5 and 4 (V

4.5

AM mixer output

Mixer coil connected

between pins 7 and 4 (V

4.5

Tu-LED output

Active low

Open-collector output can

directly drive LED

(IC max = 20 mA)

4.5

ST-LED output

and

AM-IF output

Active low

Open-collector output can

directly drive LED

(IC max = 20 mA)
In AM operation, AM-IF signal

(450 kHz) is output here.

Oscillator coil connected

between pins 3 and 4 (V

AM/FM-IN/MPX section ground

AM/FM-IN/MPX block V

A10249

A10250

A10251

A10252

A10253

Continued on next page

LA1828

51198RM(KI) No. 5837-4/13

Ordering number : EN5837

Continued from preceding page

number

Function

Quiescent

voltage (V)

Equivalent circuit

Remarks

1.3

FM-IF input

1.3

AM-IF input

= 2 k

0.7

0.2

AM-AGC output

and FM S meter

output

Internal load impedance

R = 16.6 k

4.5

FM detector

Detector coil connected

between pins 13 and 4 (V

2.9

3.8

Pilot tone

detector filter

and forced

mono switching

Mono mode is forced on by

connecting pin 14 to ground.

3.8

Phase

comparator

filter and AM/FM

switching

FM reception mode is

enabled when pin 15 is open.

AM reception mode is

enabled when pin 15 is

connected to ground.

= 330

RIN

A10254

RIN

A10255

A10256

A10257

A10258

A10259

Continued on next page

LA1828

51198RM(KI) No. 5837-5/13

Ordering number : EN5837

Continued from preceding page

number

Function

Quiescent

voltage (V)

Equivalent circuit

Remarks

1.4

L output

R output

1.3

MPX input

= 50 k

0.5

1.5

FM detector

output and AM

detector output

Output impedance

AM: R

OUT

= 50 k

FM: R

OUT

= 500

Capacitance between pin 19

and ground should be

optimzed for the best

separation characteristics.

4.5

4.4

FM-OSC

GND2

FM-FE brock ground

Colpitts oscillator circuit

FM oscillator coil connected

to pin 20.

4.5

4.4

FM-FE block V

Power is supplied from pin 4

1) via external resistor

(10

4.5

4.4

1.0

FM-RF output

FM-RF input

FM RF coil connected

between pins 22 and 21

2).

RIN = 1.8 k

OUT

= 7.5 k

A10261

RIN

A10262

OUT

(FM)

ROUT(AM)

A10260

ROUT

A10263

A10265

A10264

LA1828

51198RM(KI) No. 5837-6/13

Ordering number : EN5837

Coil specifications

(bottom view)

· FM-BPF: SA-309 (Sumida) 88 to 108 MHz

· FM-IF filter: SFE10.7MS2 (Murata)

· AM-IF filter: SFU450B (Murata)

· Poly-varicon: FT-2217 (Toko) or PVC-22KTL (Mitsumi)

· MW bar antenna: TYA-1005 (Mitsumi)

· FM-RF: SA-149 (Sumida) 3.6 mm dia., air core, 0.6 mm wire, 4 1/2 T

· FM-OSC: SA-151 (Sumida) 3.6 mm dia., air core, 0.6 mm wire, 3 1/2 T

· FM-Mix: SA-165 (Sumida)

· AM-OSC: SA-181 (Sumida)

· FM-Det: SA-1134 (Sumida)

· AM-IFT: SA-1136 (Sumida)

12T

0.12 UEW
f

= 10.7 MHz

With 100 pF
internal capacitor

12T

0.10 UEW
f

= 10.7 MHz

With 82 pF
internal capacitor

37T

74T

0.06 UEW
f

= 796 kHz

L = 140

68T

= 796 kHz

230

L = 260

122T

62T

0.06 UEW
f

= 450 kHz

With 180 pF
internal capacitor

A10394

A10395

A10267

A10270

A10269

LA1828

51198RM(KI) No. 5837-7/13

Ordering number : EN5837

· FM-Mix: YT-30224 (Mitsumi) for DUT

· AM-OSC: HW-50425 (Mitsumi) for DUT

· FM-Det: YT-30103 (Mitsumi) for DUT

· AM-IFT: YD-1073-1 (Mitsumi) for DUT

0.12 UEW
f

= 10.7 MHz

= 80

With 150 pF
internal capacitor

10T

= 10.7 MHz

= 90

With 82 pF
internal capacitor

86T

L = 270

58T

94T

= 450 kHz

With 180 pF
internal capacitor

A10266

A10268

A10271

SFU450B

A10272

LA1828

51198RM(KI) No. 5837-8/13

Ordering number : EN5837

Block Diagram

REG

OSC

MIX

VCC1

GND1

GND2

B.P.F.

VCC2

OSC

TUN

LED

FM-IF

S-METER

AM-IF

DET

VCO

ST-SW

DECODER

PHASE

COMP

TRIG

PILOT

DET

AGC

DET

AM Ant

AM/FM

TUN

FM ST

10.7M

450k

V-AGC
V-SM

VCC

L-OUT

R-OUT

FM Ant

A10273

LA1828

51198RM(KI) No. 5837-9/13

Ordering number : EN5837

Test Circuit

234

678

B.P.F.

V-SM

=4.5V

A10274

amp

L.P.F

amp

L.P.F

AM ant-input

(1000kHz)

0.047

39mH

V-REG

AM-OSC

HW-50425

10pF

24pF

100

0.047

FM-IFT

YT-30224

AM-IFT

YD-1073-1

10.7M

AM/FM

FM ST

FM IF-input

(10.7MHz)

300

0.047

2.2k

FM-DET

YT-30103

3.3

3.3k

0.1

0.47

6800pF

2200pF

4.7

18pF

15pF

30pF

1000pF

FM-OSC

SA-151

FM-RF

SA-149

1000pF

SA-309

FM ant-input

(98MHz)

FM-Vosc

(108.7MHz)

2SK315

100k

100

5pF

5.0V

0dB

R-OUT

L-OUT

LA1828

LA1828

51198RM(KI) No. 5837-10/13

Ordering number : EN5837

Sample Application Circuit

1234

678

B.P.F.

V-SM

=4.5V

A10275

0.047

V-REG

AM-OSC

SA-181

390pF

27pF

18pF

100

0.047

100

FM-IFT

SA-165

AM-IFT

SA-1136

10.7MHz

450KHz

AM/FM

FM ST

2.2k

FM-DET

SA-1134

3.3

3.3k

0.1

0.47

6800pF

1800pF

4.7

18pF

15pF

30pF

1000pF

FM-OSC

SA-151

FM-RF

SA-149

1000pF

SA-309

FM antenna

LA1828

AM antenna

TYA-1005

LA1828

51198RM(KI) No. 5837-11/13

Ordering number : EN5837

-10

-30

-20

-50

-40

-70

-60

-80

-100

-90

100

140

120

-20

-10

-30

-20

-50

-40

-70

-60

-80

2.5

2.0

1.5

1.0

0.5

100

120

140

-20

100

110

0.01

0.1

1.0

2 3

5 7

2 3

5 7

2 3

5 7

0.1

1.0

0.01

2 3

5 7

2 3

5 7

0.1

1.0

Output - dBm

FM characteristics

Total harmonic distortion, THD - %

ANT input - dB

FM V

characteristics

FM V

characteristics

Qs,Ls,SD - dB

S/N - dB

Qs,Ls,SD -

S/N

Output, Vo - dBm

Power supply voltage, V

- V

Power supply voltage, V

- V

MPX characteristics

Modulation frequency, fm - kHz

Separation - dB

MPX characteristics

FM characteristics

ANT input - dB

Power supply voltage, V

- V

FM V

characteristics

THD = 22.5kHz dev

THD=75kHz dev

S/N

Signal

Noise

AM Out

THD=25kHzdev

THD=75kHzdev

=4.5V

fc=98MHz

fm =1kHz,22.5kHzdev

=4.5V

fc=98MHz

fm =1kHz

fc=98kHz

=60dB

fm =1kHz,22.5kHzdev

fc=4.5kHz

=60dB

fm =1kHz,22.5kHzdev

fc=98MHz

=60dB

fm = 1kHz

= 3V

No input

fm = 1kHz

FM characteristics

=4.5V

=60dB

fc=98MHz

L+R = 90%
PILOT =10%

MONO

MAIN

SUB

=4.5V

=60dB

fc=98MHz

L+R = 90%
PILOT =10%

Sep - L

Sep - R

Total harmonic distortion, THD - %

S/N

Quiescent current I

cco

- mA

Reception frequency, fr - MHz

S meter voltage, Vsun- V

LA1828

51198RM(KI) No. 5837-12/13

Ordering number : EN5837

-10

-30

-20

-50

-40

-70

-60

-80

-100

-90

100

120

140

-20

-10

-40

-30

-60

-50

-70

-80

400

600

800

1000

1200

1400

1600

1800

Total Harmonic distortion, THD - %

100

120

140

-10

-30

-20

-50

-40

-70

-60

-80

-100

-90

100

120

140

2.0

1.5

1.0

0.5

100

120

140

Output - dBm

ANT input - dB/m

AM characteristics

Signal

Noise

=4.5V

fc=1MHz

fm = 1kHz, 30%mod

Quiescent current, I

CCO

- mA

Detector output V

- dBm

Reception frequency, fr - kHz

AM characteristics

Sensitivity - dB/m

S/N - dB

Sensitivity - dB/m

S/N - dB

Power supply voltage, V

- V

Power supply voltage, V

- V

Output - dBm

AM characteristics

ANT input - dB/m

AM characteristics

otal harmonic distortion, THD - %

AM V

characteristics

AM V

characteristics

Signal

IF Beat

=4.5V

fc=900kHz

fm = 1kHz,30%mod

=4.5V

fc=1MHz

fm = 1kHz

fc=1MHz

=74dB/m

fm =1kHz,30%mod

fc=1MHz

=74dB/m

fm =1kHz,30%mod

=4.5V

=74dB/m

fm =1kHz,30%mod

THD = 80%

THD = 30%

S/N

Maximum sensitivity

(input for 20 mV output)

S/N

CCO

AGC voltage, V

AGC

- V

ANT input - dB/m

AM characteristics

=3V

fc=1MHz

THD=80%

THD=30

Maximum sensitivity

(input for 20 mV output)

LA1828

51198RM(KI) No. 5837-13/13

Ordering number : EN5837

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:

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:

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 May, 1998. Specifications and information herein are subject to change

without notice.

Ð­Ð»ÐµÐºÑ‚Ñ€Ð¾Ð½Ð½Ñ‹Ð¹ ÐºÐ¾Ð¼Ð¿Ð¾Ð½ÐµÐ½Ñ‚: LA1828

ÐÐ»ÐµÐºÑ‚Ñ€Ð¾Ð½Ð½Ñ‹Ð¹ ÐºÐ¾Ð¼Ð¿Ð¾Ð½ÐµÐ½Ñ‚: LA1828