tea1114auh NXP Semiconductors, tea1114auh Datasheet - Page 20

• Manufacturer Part Number: tea1114auh
• Description: Low Voltage Telephone Transmission Circuit With Dialler Interface And Regulated Strong Supply
• Manufacturer: NXP Semiconductors

Philips Semiconductors
2000 Mar 21
handbook, full pagewidth
handbook, full pagewidth
Low voltage telephone transmission circuit with
dialler interface and regulated strong supply
Receive and earpiece gains: S1 = open.
Inputs not being tested should be open-circuit.
Inputs not being tested should be open-circuit.
I line
V CC
Fig.17 Test figure for defining regulated supply (V
100
Z line
600
F
3 mA
IR
MIC
MIC
DTMF
220
nF
REG
I line
V I
C REG
4.7 F
Fig.16 Test figure for defining receive gains.
LN
IR
MIC
MIC
DTMF
AGC
REG
TEA1114A
C REG
4.7 F
SLPE
619
R CC
V LN
LN
R SLPE
20
AGC
TEA1114A
V CC
V EE
SLPE
619
Voltage gain defined as G
R CC
20
R SLPE
20
DD
MUTE
V DD
V EE
) performance in ringer and trickle mode.
V CC
GAR
QR
RX
I CC
MUTE
V DD
S1
v
GAR
= 20 log
I DD
QR
RX
V DD
V
------ -
V
220 F
C VDD
O
I
R E2
R E1
100 k
; V
V RX
O
10 F
= V
C GARS
QR
MGK811
10 F
V QR
100 F
C GAR
C VCC
or V
Product specification
100
R L2
10 k
nF
TEA1114A
RX
R L1
.
MGK810
I DD