Specifications

Parameter

Symbol

Conditions

Ratings

Unit

Supply voltage

Pin 8, 14

16

V

Output voltage

Vo

Pin 5, 7

24

V

Input voltage

VI

Pin 3

5.6

V

Supply current

Pin 5+7+8+14

32

mA

Output high drive current

I18

Pin 18

5

mA

I20

Pin 20

2

mA

Allowable power dissipation

Pd max

See Figure 2

700

mA

Operating temperature

Topr

–20 to +70

°C

Storage temperature

Tstg

–40 to +125

°C

Parameter

Symbol

Conditions

Ratings

Unit

Recommended supply voltage

12

V

(based on application circuit).

Parameter

Symbol

Conditions

Ratings

min

typ

max

Unit

Current drain

quiescent

16.0

25.0

35.0

mA

107 dBµ input

19.0

29.0

40.0

mA

Detection output

Vo1

23 dBµ input, mod. 30%

–27.5

–23.0

–18.5

dBm

Vo2

80 dBµ input, mod. 30%

–15.5

–12.5

–9.5

dBm

Signal to noise ratio

S/N1

23 dBµ input, mod. 30%

16

20

dB

S/N2

80 dBµ input, mod. 30%

52

57

dB

Total harmonic distortion

THD1

80 dBµ input, mod. 30%

0.4

1.0

%

THD2

107 dBµ input, mod. 30%

0.3

1.0

%

Signal meter output

quiescent

0

0.5

V

107 dBµ input

3.0

4.5

7.0

V

Input at signal meter output=1V

19.0

25.0

31.0

dBµ

Local oscillation-buffer output

Vosc

250

350

mVrms

Reference Characteristics

Parameter

Symbol

Conditions

Ratings

min

typ

max

Unit

Signal meter output

40 dBµ input

2.5

V

Total harmonic distortion

THD3

112 dBµ input, mod.30%

2

%

Local oscillation fluctuation

∆Vosc

VoscL (522kHz) to VoscH

10

mVrms

within a band

(1647kHz)

Signal meter band width*

80 dBµ input, 1/2 output frequency

±1.5

kHz

80 dBµ input, 1/10 output frequency

–4.5/+7

kHz

Selectivity

±10kHz at 30% mod.

45

dB

IF interference

fr=600kHz

85

dB

Image frequency interference

fr=1400kHz

40

dB

ratio

* BFB450C4 N (Murata, Co.,) was used as a narrow band filter.

(Note) 0 dBm=775mV, 0 dBu=1µV.

LA1245

No.737-2/11