HFA3767 查看數據表（PDF） - Intersil

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HFA3767

130MHz CDMA/AMPS Quadrature Modulator and AGC

Intersil 

HFA3767

Pin Descriptions

PIN NUMBER

NAME

1

TX_PE

2

GND

3

TXI+

4

TXI-

5

NC

6

TXQ-

7

TXQ+

8

MIX_GND

9

DPS_GND

10

DPS_VCC

11

LO_GND

12

LO_IN

13

CAP

14

AGC_GND

15

TX_IF+

16

TX_IF-

17

AGC_VCC

18

GCT

19

AGC_CTRL

20

VCC

DESCRIPTION

Power enable control input. HIGH for normal operation. LOW for power down.

Bias and AGC control ground return.

Positive I channel baseband input. Requires a 1.2VDC common mode bias voltage.

Negative I channel baseband input. Requires a 1.2VDC common mode bias voltage.

No connect pin. Tie to ground to improve isolation from I to Q channels.

Negative QI channel baseband input. Requires a 1.2VDC common mode bias voltage.

Positive Q channel baseband input. Requires a 1.2VDC common mode bias voltage.

Quadrature Mixers ground return.

Digital Phase shifter ground return.

Digital Phase Shifter Power Supply. Use high quality RF decoupling capacitors right at the pin.

Local Oscillator Input ground return.

Local Oscillator Current Input. Use a 50Ω power to current converter.See applications diagram.

AGC Bias circuit filter capacitor. Typical value of 1000pF to 10000pF.

AGC circuit ground return.

Positive IF output port. Requires a DC return to VCC thru a choke or match inductor.

Negative IF output port. Requires a DC return to VCC thru a choke or match inductor.

AGC circuit Power Supply.Use high quality RF decoupling capacitors right at the pin.

Gain and temperature compensation external resistor. See applications diagram.

AGC control input. Require a 1% resistor divider at this input. See applications diagram.

Bias and AGC control Power Supply.Use high quality RF decoupling capacitors right at the pin.

2

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