HFA3783IN Ver la hoja de datos (PDF) - Intersil

Número de pieza

componentes Descripción

Fabricante

HFA3783IN

I/Q Modulator/Demodulator and Synthesizer

Intersil 

HFA3783

BUFFER

LPF

CM

VOLTAGE

Bit C<11>

RXI+

PIN 38

RXI-

PIN 37

IDAC

IDAC

8

COMP

SAR

8

CONTROL

COMP

AUTO BAL.

LPF

BUFFER

CAL CLK

CM

VOLTAGE

BIT C<11>

CAL_EN

PIN 42

BITS C<0:6>

CAL

COUNTER

REF_IN

PIN 14

FIGURE 2. DC OFFSET CALIBRATION BLOCK DIAGRAM

RXQ+

PIN 36

RXQ-

PIN 35

CAL_EN

(CAL CLK)

REF/C

REF/2C

CALIBRATION STARTS AT NEXT RISE TIME OF (REF/COUNTER) SETTING FROM THE SERIAL INTERFACE

ALLOCATED SETTLING TIME

AGC AMP ON-BASEBAND NATURAL

OFFSET IF CAL_EN IS LOW

CALIBRATE COMPARATORS

1

2

3

5

4

AGC AMP TURNED OFF IN RX MODE

AGC AMP ON

CALIBRATED OFFSET AT BASEBAND

67

8

FIGURE 3. DC OFFSET CALIBRATION TIMING DIAGRAM

16

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