TEA1111AT NXP Semiconductors, TEA1111AT Datasheet - Page 2

• Manufacturer Part Number: TEA1111AT
• Manufacturer: NXP Semiconductors

Specifications of TEA1111AT

• Operating Supply Voltage (typ): 3.3V
• Max Transmitter Gain: 45.2dB
• Receiver Gain (max): 28.4dB
• Operating Temp Range: -25C to 75C
• Package Type: SO
• Pin Count: 16
• Operating Current: 1.15mA
• Operating Temperature Classification: Commercial
• Mounting: Surface Mount
• Lead Free Status / Rohs Status: Compliant

Philips Semiconductors
FEATURES
QUICK REFERENCE DATA
I
according to test circuits given in Figs 15, 16 and 17; T
specified.
2000 Feb 18
line
SYMBOL
I
V
I
V
V
I
G
G
line
CC
DD
G
G
G
Low DC line voltage; operates down to 1.5 V (excluding
voltage drop across external polarity guard)
Line voltage regulator with adjustable DC voltage
3.25 V regulated strong supply point for peripheral
circuits compatible with:
– Speech mode
– Ringer mode
– Trickle mode.
Transmit stage with:
– Microphone amplifier with symmetrical high
– DTMF amplifier with confidence tone on earpiece.
Receive stage with:
– Earpiece amplifier with adjustable gain and volume
MUTE input for pulse or DTMF dialling
AGC line loss compensation for microphone and
earpiece
LED control output.
LN
CC
DD
Speech circuit with dialler interface, regulated
supply and earpiece volume control
v(TX)
v(QR)
= 15 mA; V
v(QR)
v(trx)
v(trx)(m)
impedance inputs
control.
line current operating range
DC line voltage
internal current consumption
supply voltage for internal circuitry (unregulated)
regulated supply voltage for peripherals
available supply current for peripherals
typical voltage gain for microphone amplifier
typical voltage gain for earpiece amplifier
volume control range for earpiece amplifier
gain control range for microphone and earpiece
amplifiers with respect to I
gain reduction for microphone and earpiece
amplifiers
speech mode
ringer mode
EE
= 0 V; V
VCI
= 0 V; R
PARAMETER
SLPE
line
= 15 mA
= 20 ; AGC pin connected to V
amb
= 25 C; T
2
APPLICATIONS
GENERAL DESCRIPTION
The TEA1111A is a bipolar integrated circuit that performs
all speech and line interface functions required in fully
electronic telephone sets. It performs electronic switching
between speech and dialling. The IC operates at a line
voltage down to 1.5 V DC (with reduced performance) to
facilitate the use of telephone sets connected in parallel.
When the line current is high enough, a fixed amount of
current is derived from the LN pin in order to create a
strong supply point at pin V
regulated to 3.25 V to supply peripherals such as dialler,
LCD module and microcontroller.
Line powered telephone sets with LCD module
Cordless telephones
Fax machines
Answering machines.
normal operation
with reduced
performance
V
I
I
I
V
V
I
MUTE = LOW
P
DD
DD
line
CC
MIC
IR
= 0 mA
= 3 mA
= 75 mA
= 4 mV (RMS)
= 85 mA
= 3.3 V
= 4 mV (RMS)
j
CONDITIONS
= 25 C for TEA1111AUH; unless otherwise
EE
; Z
line
= 600 ; f = 1 kHz; measured
DD
11
1
3.7
2.95
3.0
43.2
26.4
0
MIN.
. The voltage at pin V
Product specification
4.0
1.15
3.3
3.25
3.3
44.2
27.4
14.5
6.0
80
TYP. MAX. UNIT
TEA1111A
140
11
4.3
1.4
3.55
3.6
45.2
28.4
3
DD
mA
mA
V
mA
V
V
V
mA
dB
dB
dB
dB
dB
is