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LA8638V

Low-voltage Compander IC for Cordless Telephones

SANYO -> Panasonic 

LA8638V

Electrical Characteristics at Ta = 25°C, VCC = 2.4 V, fIN = 1 kHz

Parameter

Symbol

Conditions

Current drain with no signal

ICCO No signal

Standby current

ISTBY Standby mode, No signal

[Transmitter block] Vinrefc = –60 dBV = 0 dB, microphone amplifier gain = 40 dB, RL = 15 kΩ

Output level

VOc VIN = Vinrefc = 0 dB

Gain change level

GCc VIN = –10 dB

Gain error

GEc VIN = –40 dB

Total harmonic distortion

THDc VIN = 0 dB

Output noise voltage

VNOc Rg = 620Ω, f = 20 to 20 kHz

Limiting voltage

VLT VIN = +30 dB, 1 kHz BPF

Microphone amplifier maximum voltage gain VG max

Low pass filter attenuation

Lalt

fIN = 5 kHz; fifth-order Butterworth function

filter (fc = 3.35 kHz)

Muting attenuation

ATTc

Crosstalk level

CTc

[Receiver block] Vinrefe = –20 dBV = 0 dB, RL = 15 kΩ

Output level

VOe

Gain change level

GCe

Gain error

GEe

Output noise voltage

VNOe

Muting attenuation

ATTe

Crosstalk level

CTe

[BTL amplifier] RL = 2 kΩ

Maximum output voltage

Total harmonic distortion

VObtl

THDbtl

[Data shaper] VIN = –20 dBV, RL = 100 kΩ

Duty factor

DUTY

VIN = +30 dB, 1 kHz BPF

RX—VIN = –10 dBV, 1 kHz BPF

VIN = Vinrefe = 0 dB

VIN = 0 dB

VIN = –30 dB

Rg = 620 Ω, f = 20 to 20 kHz

VIN = +10 dB, 1 kHz BPF

TX—VIN = –40 dBV, 1 kHz BPF

THD = 3%

VIN = –5 dBV

Dead zone

UNSN

Output “H” level

VH

Output “L” level

VL

[Digital input characteristics]

Input “H” level 1

Input “L” level 1

Input “H” level 2

Input “L” level 2

VIH1

VIL2

VIH2

VIL2

Pins 17, 18, 20, and 22

Pins 17, 18, 20, and 22

Pin 19

Pin 19

min

3.0

0.4

Ratings

typ

5.4

0.7

Unit

max

7.6 mA

0.95 mA

–18.1

3.5

–2.0

0.88

40

12.0

–16.1

4.0

–0.7

0.45

1.8

1.05

46

16.5

–83

–61

–14.1

4.4

+1.0

1.0

4.5

1.23

dBV

dB

dB

%

mVrms

Vp-p

dB

25.0

dB

–65 dBV

–50 dBV

–18.8

6.0

–1.5

–16.3

7.1

+0.3

50

–100

–83

–13.8

8.4

+2.0

100

–80

–65

dBV

dB

dB

µVrms

dBV

dBV

3.2

4.2

Vp-p

0.4

1.0

%

43

–39.0

2.2

50

–34.5

2.38

0.12

57

%

–30.0 dBV

V

0.3

V

0.6 VCC

1.3

V

0.25 VCC

V

V

0.3

V

No. 5776-2/16

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