tea1114auh NXP Semiconductors, tea1114auh Datasheet - Page 19

• 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
Low voltage telephone transmission circuit with
dialler interface and regulated strong supply
Voltage gain defined as G
Microphone gain: S1 = open.
DTMF gain and confidence tone: S1 = closed.
Inputs not being tested should be open-circuit.
I line
V O
100
Z line
600
F
v
= 20 log
V MIC
3
mA
220
V
------ -
nF
V
O
I
I line
V DTMF
; V
I
Fig.15 Test figure for defining transmit gains.
= V
IR
MIC
MIC
DTMF
MIC
or V
REG
DTMF
C REG
4.7 F
V LN
.
LN
AGC
TEA1114A
SLPE
619
19
R CC
R SLPE
20
V EE
V CC
I CC
MUTE
V DD
S1
GAR
I DD
QR
RX
220 F
C VDD
R E2
R E1
100 k
C GARS
10 F
100 F
C GAR
C VCC
Product specification
100
R L2
10 k
nF
TEA1114A
R L1
MGK809