tea1094t NXP Semiconductors, tea1094t Datasheet - Page 17

• Manufacturer Part Number: tea1094t
• Description: Hands Free Ic
• Manufacturer: NXP Semiconductors

Philips Semiconductors
Notes
1. Corresponds to 50 mW output power.
2. Corresponds to 200 mW output power.
3. Corresponds to 1 dB tracking.
4. Corresponds to 4.3 dB noise/speech recognition level.
1996 Jul 15
N
I
I
D
V
Decision logic (IDT and SWT)
S
S
I
I
I
Voice switch (STAB and SWR)
SWRA
| G
G
source(NOI)
sink(NOI)
source(SWT)
sink(SWT)
idle(SWT)
SYMBOL
V
V
V
SWRA
RINDT(rms)
IGNAL RECOGNITION
WITCH
OISE ENVELOPE DETECTORS
IAL TONE DETECTOR
Hands free IC
tr
NOI
Srx(th)
Stx(th)
v
|
-
OVER
maximum current sourced from
pins TNOI or RNOI
maximum current sunk by
pins TNOI or RNOI
voltage difference between
pins RNOI and TNOI
threshold level at pins RIN1 and
RIN2 (RMS value)
threshold voltage between
pins RENV and RNOI to
switch-over from receive to idle
mode
threshold voltage between
pins TENV and TNOI to
switch-over from transmit to idle
mode
current sourced from pin SWT
when switching to receive mode
current sunk by pin SWT when
switching to transmit mode
current sourced from pin SWT in
idle mode
switching range
switching range adjustment
voltage gain variation from
transmit mode to idle mode on
both channels
gain tracking (G
switching, referenced to idle mode
PARAMETER
vtx
+ G
vrx
) during
when 5 A is sourced from
both RSEN and TSEN;
noise detectors tracking;
note 3
V
note 4
with R
365 k
RIN
SWR
CONDITIONS
V
17
RINDT
referenced to
; note 4
0.75
7.5
7.5
40
MIN.
TEA1094; TEA1094A
1
120
127
13
13
10
10
0
40
20
TYP.
3
0.5
Product specification
1.25
12.5
12.5
+12
MAX.
mV
mV
mV
mV
dB
dB
dB
dB
UNIT
A
A
A
A
A