ATTL7556AAU 查看數據表（PDF） - Agere -> LSI Corporation

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ATTL7556AAU

Low-Power SLICs with Battery Switch

Agere -> LSI Corporation 

Data Sheet

January 2000

L7556, L7557 Low-Power SLICs

with Battery Switch

Applications (continued)

ac Design (continued)

Selection Criteria (continued)

ac equivalent circuits using a T7513 Codec are shown in Figures 32 and 33.

RX

VGSX

ZT/R RP PT 40 Ω

+ IT/R

VS

ZT VT/R

–

RP PR 40 Ω

AV = 1

AV = –1

– –0.125 V/mA

+

VITR

–

AV = 4

+

RCVN

RCVP

RT2

RT1

RHB1

RRCV

RG

VFXIN –

VFXIP +

VFR

(PWROP)

SLIC

Figure 32. ac Equivalent Circuit Not Including Spare Op Amp

T7513 CODEC

12-2554j (F)

ZT5

ZT/R RP PT 40 Ω

+ IT/R

VS

ZT VT/R

–

RP PR 40 Ω

– –0.125 V/mA

+

VITR

RT4

XMT

–

SN

AGND +

RCVN

–

RT3

AV = 1

AV = 4

+

RCVP

RGN

RT6

RHB1

RRCV

AV = –1

RX

VFXIN –

VFXIP +

VFR

(PWROP)

VGSX

SLIC

Figure 33. ac Equivalent Circuit Including Spare Op Amp

T7513 CODEC

12-3013b (F)

Lucent Technologies Inc.

25

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