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參數(shù)資料
| 型號(hào)： | HFA3766 |
| 廠商： | Intersil Corporation |
| 英文描述： | 400MHz AGC Quadrature IF Modulator/Demodulator |
| 中文描述： | 400MHz的中頻AGC的正交調(diào)制器/解調(diào)器 |
| 文件頁(yè)數(shù)： | 4/11頁(yè) |
| 文件大小： | 79K |
| 代理商： | HFA3766 |
4
Pin Descriptions
PIN
SYMBOL
DESCRIPTION
1
AGC1_BYP+
DC feedback pin for AGC amplifier 1. Requires good decoupling and minimum wire length to a solid signal
ground.
2
AGC1_IN+
Non-inverting analog input of AGC amplifier 1.
3
GND
Ground. Connect to a solid ground plane.
4
AGC_SEL
This pin selects either differential or single ended input configuration for the first stage AGC. Ground this pin for
differential input configuration. Leave it floating for single ended input configuration.
5
AGC1_IN-
Inverting analog input of AGC amplifier 1.
6
AGC1_BYP-
DC feedback pin for AGC amplifier 1. Requires good decoupling and minimum wire length to a solid signal
ground.
7, 8
GND
Ground. Connect to a solid ground plane.
9
LPF_V
CC
Supply pin for the Low pass filter. Use high quality decoupling capacitors right at the pin.
10
2V REF
Stable 2V reference voltage output for external applications. Loading must be higher than 10k
. A bypass
capacitor of at least 0.1
μ
F is required.
11
LPF_BYP
Internal reference bypass pin. This is the common voltage (V
CM
) used for the LPF digital thresholds. Requires
0.1
μ
F decoupling capacitor.
12
LPF_TXI_IN
Low pass filter in phase (I) channel transmit input. Conventional or attenuated direct coupling is required for
digital inputs.
13
LPF_TXQ_IN
Low pass filter quadrature (Q) channel transmit input. Conventional or attenuated direct coupling is required for
digital inputs
14
LPF_RX_I
Low pass filter in phase (I) channel receive output. Requires AC coupling.
15
LPF_RX_Q
Low pass filter quadrature (Q) channel receive output. Requires AC coupling.
16
LPF_SEL1
Digital control input pins. Selects four programmed cut off frequencies for the receive channel. Tuning speed from
one cutoff to another is less than 1
μ
s.
SEL1
SEL0
CUTOFF FREQUENCY
SEl1
LO
LO
2.2MHz
HI
LO
HI
4.4MHz
HI
SEl0
LO
HI
CUTOFF FREQUENCY
8.8MHz
17.6MHz
17
LPF_SEL0
18
LPF_TUNE1
These two pins are used to fine tune the Low pass filter cutoff frequency. A resistor connected between the two
pins (R
TUNE
) will fine tune both transmit and receive filters. Refer to the tuning equation in the LPF AC
specifications.
19
20
TXD or TXA
Selects between digital or analog signals. Tie to GND for digital. Tie to V
CC
for analog.
21
LPF_RX_PE
Digital input control pin to enable the LPF receive mode of operation. Enable logic level is High.
22
LPF_TX_PE
Digital input control pin to enable the LPF transmit mode of operation. Enable logic level is High.
23
LPF_TXQ-
Negative output of the transmit Low pass filter, quadrature channel. AC coupling is required. Normally connects
to the inverting input of the quadrature Modulator (Mod_TXQ-), pin 40.
24
LPF_TXQ+
Positive output of the transmit Low pass filter, quadrature channel. AC coupling is required. Normally connects
to the non inverting input of the quadrature Modulator (Mod_TXQ+), pin 39.
25
LPF_TXI-
Negative output of the transmit Low pass filter, in phase channel. AC coupling is required. Normally connects to
the inverting input of the in phase Modulator (Mod_TXI-), pin 38.
26
LPF_TXI+
Positive output of the transmit Low pass filter, in phase channel. AC coupling is required. Normally connects to
the non inverting input of the in phase Modulator (Mod_TXI+), pin 37.
27
LPF_RXQ-
Low pass filter inverting input of the receive quadrature channel. AC coupling is required. This input is normally
coupled to the negative output of the quadrature demodulator (Mod_RXQ-), pin 36.
HFA3766
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| HFA3766IN | 制造商:Rochester Electronics LLC 功能描述:- Bulk 制造商:Harris Corporation 功能描述: |
| HFA3766IN96 | 制造商:INTERSIL 制造商全稱:Intersil Corporation 功能描述:400MHz AGC Quadrature IF Modulator/Demodulator |
| HFA3767 | 制造商:INTERSIL 制造商全稱:Intersil Corporation 功能描述:130MHz CDMA/AMPS Quadrature Modulator and AGC |
| HFA3767IA | 制造商:Rochester Electronics LLC 功能描述:- Bulk 制造商:Harris Corporation 功能描述: |
| HFA3767IA WAF | 制造商:Harris Corporation 功能描述: |
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