PBL38812 Просмотр технического описания (PDF) - Ericsson

Номер в каталоге

Компоненты Описание

Список матч

PBL38812

Voice-switch circuit for Handsfree speakerphone TAM

Ericsson  

PBL 388 12

Parameter

NDet leakage current (hold), INDet

NDet swing relative to VRef , VNDet

CMP (comparator) sensitivity,

transmit (Tx) mode to receive

(Rx) mode or vice versa

CTR voltage for 25 dB dynamics, VCTR

CTR voltage for mute, ICTR

CTR voltage for disable, VCTR

Ref.

fig.

3

3

3

13

Conditions

VTxDetIn = VRef - 0.1 V,

VCMP = VRef + 0.1 V,

VCMP = VRef - 0.1 V,

VTxDetIn = VRef + 0.1 V

Tx mode = max Tx gain,

Rx mode = max Rx gain

3

VCMP = VRef ± 0.35 V, RCTR=100kΩ

3

VCMP = VRef ± 0.35 V

3

Notes:

1.

20 • 10log (

VNDet - VRef

VTxDet - VTxDetO

)

VNDet = voltage at noise detector output

VRef = reference voltage (about 1.9 V) see figure 2.

V = Voltage at transmit detector output.

TxDet

VTxDetO= voltage at transmit detector output at the point

when the voltage at the noise detector starts

moving when a signal at transmit channel input is

gradually increased (threshold, typical value 30 mV)

2. Depends on V+. Channels are tracking.

Min.

Typ.

-100

Max.

-0.45

50

100

Unit.

nA

V

mV

V+

V

µA

0.55

V

4

Share Link: