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HFA3683A PDF даташит

Спецификация HFA3683A изготовлена ​​​​«Intersil Corporation» и имеет функцию, называемую «2.4GHz RF/IF Converter and Synthesizer».

Детали детали

Номер произв HFA3683A
Описание 2.4GHz RF/IF Converter and Synthesizer
Производители Intersil Corporation
логотип Intersil Corporation логотип 

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HFA3683A Даташит, Описание, Даташиты
TM
Data Sheet
HFA3683A
June 2000 File Number 4634.5
2.4GHz RF/IF Converter and Synthesizer
The HFA3683A is a monolithic SiGe
half-duplex RF/IF transceiver designed
to operate in the 2.4GHz ISM band.
The receive chain features a low noise,
gain selectable amplifier (LNA) followed
by a down-converter mixer. An up-converter mixer and a
high performance preamplifier compose the transmit chain.
The remaining circuitry comprises a high frequency Phase
Locked Loop (PLL) synthesizer with a three wire
programmable interface for local oscillator applications.
A reduced filter count is realized by multiplexing the receive
and transmit IF paths and by sharing a common differential
matching network. Furthermore, both transmit and receive
RF amplifiers can be directly connected to mixers. The
inherent image rejection of both the transmit and receive
functions allow this economic advantage.
The HFA3683A is housed in a 64 lead TQFP package well
suited for PCMCIA board applications.
Ordering Information
PART
NUMBER
HFA3683AIN
HFA3683AIN96
TEMP. RANGE
(oC) PACKAGE PKG. NO.
-40 to 85 64 Ld TQFP Q64.10x10
-40 to 85 Tape and Reel
Simplified Block Diagram
RX_IN
CP_DO
INTERFACE
REF_IN
TXA_OUT
PLL
MODULE
RX_MX_OUT
LO_IN
TX_MX_IN
Features
• Highly Integrated
• Multiplexed RX/TX IF Path Utilizes Single IF Filter
• Programmable Synthesizer
• Gain Selectable LNA
• Power Management/Standby Mode
• Single Supply 2.7V to 3.3V Operation
Cascaded LNA/Mixer (High Gain)
• Gain . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25dB
• SSB Noise Figure. . . . . . . . . . . . . . . . . . . . . . . . . . . 3.7dB
• Input IP3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -13dBm
• IF Frequency . . . . . . . . . . . . . . . . . . . 280MHz to 600MHz
Cascaded LNA/Mixer (Low Gain)
• Gain . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -5dB
• Input P1dB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +2.5dBm
• IF Frequency . . . . . . . . . . . . . . . . . . . 280MHz to 600MHz
Cascaded Mixer/Preamplifier
• Transmit Cascaded Mixer/Preamplifier Gain . . . . . . .25dB
• SSB Noise Figure. . . . . . . . . . . . . . . . . . . . . . . . . . . .10dB
• Output P1dB. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4dBm
• IF Frequency . . . . . . . . . . . . . . . . . . . 280MHz to 600MHz
Applications
• IEEE802.11 1MBPS and 2MBPS Standard
• Systems Targeting IEEE802.11, 11MBPS Standard
• Wireless Local Area Networks
• PCMCIA Wireless Transceivers
• ISM Systems
• TDMA Packet Protocol Radios
2-1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 321-724-7143 | Intersil and Design is a trademark of Intersil Corporation. | Copyright © Intersil Corporation 2000
PRISM® is a registered trademark of Intersil Corporation. PRISM logo is a trademark of Intersil Corporation.









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HFA3683A Даташит, Описание, Даташиты
Pinout
HFA3683A
HFA3683A
(TQFP)
TOP VIEW
GND
LNA_VCC1
GND
RX_IN
GND
BIAS1_VCC1
GND
H/L
PE2
PE1
TX_VCC1
GND
TXA_OUT
GND
GND
GND
64 63 62 61 60 59 58 57 56 55 54 53 52 51 50 49
1 48
2 47
3 46
4 45
5 44
6 43
7 42
8 41
9 40
10 39
11 38
12 37
13 36
14 35
15 34
16 33
17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32
RX_MX_OUT-
TX_MX_IN-
GND
RX_LO_DRIVER_VCC1
GND
LO_VCC1
GND
LO_IN-
LO_IN+
GND
TX_LO_DRIVER_VCC1
TX_MX_VCC1
TX_MX_VCC1
TX_MX_VCC1
TX_MX_OUT
TX_MX_VCC1
Pin Description
PIN NAME
DESCRIPTION
2 LNA_VCC1 Low Noise Amplifier Positive Power Supply.
4
RX_IN
Low Noise Amplifier RF Input, internally DC coupled and requires an external blocking capacitor. A shunt capacitor to
ground matches the input for return loss and optimum NF.
6 BIAS1_VCC1 Bias Positive Power Supply for the LNA and Preamplifier.
8 H/L High or Low Gain Select, controls the LNA high and low gain modes.
9 PE2 This pin along with pin PE1 and bit M(0) of PLL_PE determine which of various operational modes will be active. Please
refer to the Power Enable Truth Table.
10 PE1 This pin along with pin PE2 and bit M(0) of PLL_PE determine which of various operational modes will be active. Please
refer to the Power Enable Truth Table.
11 TX_VCC1 Transmit Amplifier Positive Power Supply, requires a high quality decoupling capacitor and a short return path.
13 TXA_OUT Transmit Amplifier Output, internally matched to 50, requires an external DC blocking capacitor.
17 TX_VCC1 Transmit Amplifier Positive Power Supply.
19
TXA_IN
Transmit Amplifier Input, internally AC coupled.
21 LE Synthesizer Latch Enable, the serial interface is active when LE is low and the serial data is latched into defined
registers on the rising edge of LE.
22
DATA
Synthesizer Serial Data Input, clocked in on the rising edge of the serial clock, MSB first.
23 CLK Synthesizer Clock, DATA is clocked in on the rising edge of the serial clock, MSB first.
24
REF_BY
Synthesizer Reference Frequency Input Bypass, internally DC coupled and requires an external bypass to ground
when REF_IN is used as a Single Ended input, alternatively, requires an external AC coupling capacitor when used as
a differential input.
25
REF_IN
Synthesizer Reference Frequency Input, internally DC coupled and requires an external AC coupling capacitor.
2-2









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HFA3683A Даташит, Описание, Даташиты
HFA3683A
Pin Description (Continued)
PIN NAME
DESCRIPTION
27 SYN_VCC2 Synthesizer Positive Power Supply.
29 CP_VCC2 Synthesizer Charge Pump Positive Power Supply.
30
CP_DO
Synthesizer Charge Pump Output, feeds the PLL loop filter.
32 LD Synthesizer Lock Detect Output.
33 TX_MX_VCC1 Transmit Mixer Positive Power Supply.
34 TX_MX_OUT Transmit Mixer RF output, internal AC coupled and internally matched to 50Ω.
35 TX_MX_VCC1 Transmit Mixer Positive Power Supply.
36 TX_MX_VCC1 Transmit Mixer Positive Power Supply.
37 TX_MX_VCC1 Transmit Mixer Positive Power Supply.
38 TX_LO_Driver_ Transmit LO Driver Positive Power Supply.
VCC1
40
LO_IN+
Local Oscillator Positive Input, internally AC coupled, internally matched to 50when the LO is driven single ended
and the LO_IN- is grounded.
41
LO_IN-
Local Oscillator Negative Input, internally AC coupled, differential or single ended capability, ground externally for single
ended operation.
43 LO_VCC1 LO Buffer Positive Power Supply.
45 RX_LO_DRIVER Receiver LO Driver Positive Power Supply.
_VCC1
47 TX_MX_IN- Transmit Mixer Negative Input, internally DC coupled, high impedance input. Designed to share a common IF matching
network/IF SAW filter with the receive mixer. Care should be exercised regarding the PC board layout to avoid
interference and noise pickup. Layout symmetry and management of PC board parasitics is also critical for maximizing
the bandwidth of the IF matching network.
48 RX_MX_OUT- Receive Mixer Negative Output, open collector, high impedance output. Designed to share a common IF matching
network/IF SAW filter with the transmit mixer. Care should be exercised regarding the PC board layout to avoid
interference and noise pickup. Layout symmetry and management of PC board parasitics is also critical for maximizing
the bandwidth of the IF matching network.
49 RX_MX_OUT+ Receive Mixer Positive Output, open collector, high impedance output. Designed to share a common IF matching
network/IF SAW filter with the transmit mixer. Care should be exercised regarding the PC board layout to avoid
interference and noise pickup. Layout symmetry and management of PC board parasitics is also critical for maximizing
the bandwidth of the IF matching network.
50 TX_MX_IN+ Transmit Mixer Positive Input, internally DC coupled, high impedance input. Designed to share a common IF matching
network/IF SAW filter with the receive mixer. Care should be exercised regarding the PC board layout to avoid
interference and noise pickup. Layout symmetry and management of PC board parasitics is also critical for maximizing
the bandwidth of the IF matching network.
52 RX_MX_IN Receive Mixer RF Input, internally DC coupled and requires external AC coupling as well as RF matching. The
recommend network consists of a 3.3pF series capacitor followed by a small series inductance of 1.4nH and then a
1.2nH shunt inductor. The series inductance is best implemented on the PC board using a narrow transmission line
inductor.
54 PRE_VCC1 PLL Prescaler Positive Power Supply.
56 ITAT_RES1 Connection to external resistor sets the receive and transmit mixers tail currents, independent of Absolute Temperature.
57 PTAT_RES Connection to external resistor sets the receive and transmit mixers tail currents, proportional to Absolute Temperature.
58 BIAS2_VCC1 Bias Positive Power Supply for the receive and transmit mixers.
59 ITAT_RES2 Connection to external resistor sets the LNA and Preamplifier bias currents, independent of Absolute Temperature.
61
RF_OUT
Low Noise Amplifier RF Output, internally AC coupled and internally matched to 50Ω.
63 COL_OUT LNA Collector Output, requires a bypass capacitance which is resonant with the PC board parasitics. A small resistance
(20Ω) in series with the main PC board VCC buss is recommended to provide isolation from other VCC bypass
capacitors. This ensures the image rejection performance of the LNA is maintained.
All
Others
GND
Circuit Ground Pins (Quantity 23 each).
2-3










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