U4091BM-RFNY19 Atmel, U4091BM-RFNY19 Datasheet - Page 22

• Manufacturer Part Number: U4091BM-RFNY19
• Description: RF Wireless Misc COM.CORDED - FEATURE PHONE CIRCUIT
• Manufacturer: Atmel
• Type: Programmable Telephone Audio Processorr

Specifications of U4091BM-RFNY19

• Operating Frequency: 100 KHz
• Operating Temperature Range: - 55 C to +150 C
• Package / Case: SSO-44
• Mounting Style: SMD/SMT

22
Atmel U4091BM-R
Figure 12-5. Dial Tone Detector
Figure 12-6. Background Noise Monitor
Figure 12-7. Generation of Control Voltage (CT) for Mode Switching
(TLDT)
TLDR
C
CT
CT
10µA
I
RX
V
IN
M
I
10µA
TX
33kΩ
+
-
56kΩ
V
M
I
FI
+
-
35mV
V
M
DTD
+
I
-
SI
36mV
V
M
OUT
I
4
V
B
+
-
Control
control
circuit
AFS
to mode
control
(I
I
4
3
)
Dial tone det.
to
attenuators
(BNMT)
BNMR
4
I
1-4
1µF
4872B–CORD–01/11