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CXA1741Q PDF даташит

Спецификация CXA1741Q изготовлена ​​​​«Sony Corporation» и имеет функцию, называемую «IF Amplifier for Analog Cellular Communications».

Детали детали

Номер произв CXA1741Q
Описание IF Amplifier for Analog Cellular Communications
Производители Sony Corporation
логотип Sony Corporation логотип 

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CXA1741Q Даташит, Описание, Даташиты
CXA1741Q
IF Amplifier for Analog Cellular Communications
For the availability of this product, please contact the sales office.
Description
The CXA1741Q is an analog cellular(TACS/
40 pin QFP (Plastic)
NTACS) FM IF IC which incorporates an IF filter.
Features
Incorporates a ceramic filter function, which is
normally mounted externally.
Quadrature detection discriminator function.
This IC has almost all IF functions and is ideal for
reduction in set size because of few external parts
required.
The built-in filter permits mode changeover
between TACS and NTACS.
Wide operating voltage range (2.7 V to 3.6 V) and
low current consumption (Icc=10 mA (typ.) when
Vcc= 3 V).
Wide range and excellent temperature
characteristics for the RSSI (receiving signal
strength indicator).
Absolute Maximum Ratings (Ta = 25°C)
Supply voltage
VCC
5
V
Operating temperature Topr –35 to +85 °C
Storage temperature Tstg –65 to +150 °C
Allowable power dissipation
PD 500 mW
Operating Conditions
Supply voltage
VCC 2.7 to 3.6
V
Applications
Ideally suited for cellular phones, particularly hand-
held sets.
Structure
Bipolar silicon monolithic IC
Sony reserves the right to change products and specifications without prior notice. This information does not convey any license by
any implication or otherwise under any patents or other right. Application circuits shown, if any, are typical examples illustrating the
operation of the devices. Sony cannot assume responsibility for any problems arising out of the use of these circuits.
—1—
E94245-TE









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CXA1741Q Даташит, Описание, Даташиты
Block Diagram and Pin Configuration
(Top View)
CXA1741Q
30
T4 31
T5 32
VCC1 33
29 28
PSN
PSN
27 26 25
MIXER
24 23 22
RF AMP
21
20 XTALIN
19 XTALOUT
18 AGCPS
GND1 34
T6 35
FADJ1 36
FADJ2 37
BPF0
BPF1
1/2
AGC
OSC
RSSI
17 VREF
16 RSSIPS
15 T2
14 RSDETPS
SGND 38
BPFPS1 39
BIAS
LIM DET
13 T1
12 GND2
BPFPS2 40
11 VCC2
1 2 3 4 5 6 7 8 9 10
Note) Pins 21 and 25 are connected via the IC internal wiring.
Pins 12, 21 and Pins 25, 34 are connected via IC internal resistors.
When designing a PCB, ensure that all GND pins of IC are connected to the GND on PCB with its
connection wiring distance minimized.
—2—









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CXA1741Q Даташит, Описание, Даташиты
CXA1741Q
Pin No. Symbol
Pin voltage I/O
DC AC resistance
1 SW 0V
( )TACS OPEN
NTACS HIGH
(3 V)
31
1
34
Equivalent circuit
20µA
50k
Description
Changeover switch for
built-in filter.
TACS for Low; NTACS for
High.
50k
VREF
GND
2 NC
3 BPFO 1.8 V
4
5
Not internally connected.
BPF output monitor. Not
used normally. Connected
to the LIM and RSSI inputs
in the IC.
33
147
B.P.F
N.F.B Network
LIM
RSSI
3
4
5
34
6 AUDIO 2.1 V
Outputs an AUDIO signal
11 which is FM-detected.
1k
6
—3—
12










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Номер в каталогеОписаниеПроизводители
CXA1741QIF Amplifier for Analog Cellular CommunicationsSony Corporation
Sony Corporation

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