NJW1128 View Datasheet(PDF) - Japan Radio Corporation

Part Name

Description

Manufacturer

NJW1128

Voice Switched Speakerphone Circuit with Speaker Amplifier

Japan Radio Corporation  

NJW1128

●MONITOR TERMINAL (32Pin)

PARAMETER

SYMBOL

RX-mode

Rx

TX-mode

Tx

Idle-mode

Idle

Maximum Output Current

IMON

TEST CONDITION

-

-

No Signal

Rx-mode / Tx-mode

MIN.

V+-0.6

GND

2.4

-

TYP.

-

-

2.5

0.9

MAX.

V+

0.6

2.6

-

UNIT

V

V

V

mA

! CONTROL CHARACTERISTICS (MUT)

PARAMETER

SYMBOL

Low Level Input Voltage

VIL1

High Level Input Voltage

VIH1

TEST CONDITION

-

-

MIN.

-

1.5

TYP.

-

-

MAX.

0.3

-

UNIT

V

V

! CONTROL CHARACTERISTICS (RTSW)

PARAMETER

SYMBOL

Low Level Input Voltage

VIL2

High Level Input Voltage

VIH2

TEST CONDITION

-

-

MIN.

-

V+-0.3

TYP.

-

-

MAX.

0.3

-

UNIT

V

V

! FUNCTION

●CD

INPUT VOLTAGE

VIH

VIL

STATUS

ACTIVE

MUTE

OPERATION

NJW1128 is active.

NJW1128 is stand-by except Speaker Amplifier.

●MUT

INPUT VOLTAGE

VIH

VIL

STATUS

MUTE

ACTIVE

OPERATION

The microphone input is mute.

The microphone input is active.

●SPSW

INPUT VOLTAGE

VIH

VIL

STATUS

ACTIVE

PD

OPERATION

The Speaker Amplifier is Active.

The Speaker Amplifier is Stand-by.

●RTSW

INPUT VOLTAGE

VIH

OPEN

VIL

STATUS

Receive

AUTO

Transmit

OPERATION

Force to Receive mode.

Receive mode and Transmit mode are automatically switched.

Force to Transmit mode.

●RVLC (26pin)

IMPEDANCE

0

100kΩ

STATUS

VolMAM

VolMIN

OPERATION

The Receive attenuator Volume is maximum.

The Receive attenuator Volume is minimum.

–4–

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