tea1098auh NXP Semiconductors, tea1098auh Datasheet - Page 28

• Manufacturer Part Number: tea1098auh
• Description: Speech And Handsfree Ic
• Manufacturer: NXP Semiconductors

Philips Semiconductors
2000 Aug 18
Logarithmic compressor and sensitivity adjustment
Signal envelope detectors
I
I
Noise envelope detectors
I
I
D
V
TX
V
D
Signal recognition
source(ENV)
sink(ENV)
source(NOI)
sink(NOI)
V
V
V
V
V
HFRX(th)(rms)
TXI(th)(rms)
IAL TONE DETECTOR
ECISION LOGIC
Speech and handsfree IC
det(TSEN)
det(RSEN)
ENV
NOI
Strx(th)
LEVEL LIMITER
SYMBOL
(
PINS
sensitivity detection on
pin TSEN; voltage
change on pin TENV
when doubling the
current from TSEN
sensitivity detection on
pin RSEN; voltage
change on pin RENV
when doubling the
current from RSEN
maximum current
sourced from pin TENV
or RENV
maximum current sunk
by pin TENV or RENV
voltage difference
between RENV and
TENV
maximum current
sourced from pin TNOI
or RNOI
maximum current sunk
by pin TNOI or RNOI
voltage difference
between pins RNOI
and TNOI
threshold level at pin
HFRX (RMS value)
threshold level at pin
TXI (RMS value)
threshold voltage
between RENV/RNOI
or between TENV/TNOI
to switch-over from Idle
mode to RX/TX mode
IDT
PARAMETER
AND
SWT)
I
I
10 A sourced from both
RSEN and TSEN; signal
detectors tracking; note 1
5 A sourced from both
RSEN and TSEN; noise
detectors tracking; note 1
R
C
R
V
V
TSEN
RSEN
HFRX
TXI
RSEN
RSEN
TSEN
< V
= 0.8 to 160 A
= 0.8 to 160 A
= 10 k
< V
= 10 k ;
= 100 nF
CONDITIONS
TXI(th)
HFRX(th)
28
; note 2
;
0.75
1.25
MIN.
18
18
120
1
25
0.75
13
1
3
120
3
TYP.
Product specification
1.25
TEA1098A
0.75
MAX.
mV
mV
mV
mV
mV
mV
mV
UNIT
A
A
A
A