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NJW1124

Voice Switched Speakerphone circuit

Japan Radio Corporation  

NJW1124

! ABSOLUTE MAXIMUM RATING (Ta=25°C)

PARAMETER

SYMBOL

RATING

Power Supply Voltage

V+

Power Dissipation

PD

Operating Temperature Range

Topr

5.5

800 (Note1)

-40 ~ +85

Storage Temperature Range

Tstg

-40 ~ +125

Maximum Input Voltage

VIMAX

0 ~ V+

(Note1) EIA/JEDEC STANDARD Test board (76.2x114.3x1.6mm, 2layer, FR-4) mounting

(Note2) Don’t apply the input voltage that exceeds supply voltage.

! OPERATING VOLTAGE

PARAMETER

Operating Voltage

SYMBOL

TEST CONDITION

V+

-

MIN.

2.9

TYP.

4.0

MAX.

4.5

UNIT

V

mW

°C

°C

V

UNIT

V

! ELECTRICAL CHARACTERISTICS (Ta=25°C,V+=4V,MUT=ACTIVE,RTSW=OPEN,RVLC=0Ω,GVM=0dB,ReceiveAmplifierGV=0dB)

PARAMETER

SYMBOL

TEST CONDITION

MIN. TYP. MAX. UNIT

Operating Current 1

Operating Current 2

Operating Current 3

Reference Voltage

ICC1

ICC2

ICC3

VREF

RX-mode (Receive)

TX-mode (Transmit)

Idle-mode

Idle-mode

0.7

2.0

4.0

mA

0.7

2.0

4.0

mA

0.7

2.0

4.0

mA

1.7

2.0

2.3

V

●Receive Attenuator (RxIN=100Vrms,Receive Amplifier Gv=0dB)

PARAMETER

SYMBOL

TEST CONDITION

Receive Attenuator Gain 1

Receive Attenuator Gain 2

Receive Attenuator Gain 3

Range R to T mode

Dynamic DC offset

Volume control range

GR1

GR2

GR3

∆GR

GRDC

GRVR

RX-mode (Receive)

TX-mode (Transmit)

Idle-mode (Standby),CPT=CPR=V+

RX-mode – TX-mode

RX-mode – TX-mode (DC)

RX-mode,RVLC=0Ω-100kΩ

Maximum DetecterSink Current

IRSINKMAX RLI1,TLI1,Maximum Sink Current

MIN.

3.0

-43

-17

47

-50

30

-

TYP.

6.0

-46

-20

52

-

40

-

MAX.

9.0

-50

-23

57

50

50

200

UNIT

dB

dB

dB

dB

mV

dB

µA

●Transmit Attenuator (TxIN=100Vrms,Mic.amplifier Gv=0dB)

PARAMETER

SYMBOL

TEST CONDITION

Transmit Attenuator Gain 1

Transmit Attenuator Gain 2

Transmit Attenuator Gain 3

Range R to T mode

Dynamic DC offset

Volume control range

GT1

GT2

GT3

∆GT

GTDC

GTVR

TX-mode (Transmit)

RX-mode (Receive)

Idle-mode CPT=CPR=V+

TX-mode – RX-mode

TX-mode – RX-mode (DC)

RX-mode,RVLC=0Ω-100kΩ

Maximum DetecterSink Current

IRSINKMAX RLI1,TLI1,Maximum Sink Current

MIN.

3.0

-43

-17

47

-50

31

-

TYP.

6.0

-46

-20

52

-

40

-

MAX.

9.0

-50

-23

57

50

46

200

UNIT

dB

dB

dB

dB

mV

dB

µA

–3–

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