XR-2212 データシートの表示（PDF） - Exar Corporation

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XR-2212

Precision Phase-Locked Loop

Exar Corporation 

XR-2212

ELECTRICAL CHARACTERISTICS (CONT’D)

Parameter

Input Preamp Section

Input Impedance

Input Signal to Cause Limiting

Op Amp Section

Voltage Gain

Input Bias Current

Offset Voltage

Slew Rate

Internal Reference

Voltage Level

Output Impedance

Maximum Source Current

XR-2212M/2212P

Min. Typ. Max.

20

2

10

XR-2212CP

Min. Typ. Max.

20

2

Units

Conditions

kW

mV rms

Measured at Pin 2

55 70

55 70

0.1

1

0.1

1

dB

RL = 5.1kW, RF = R

mA

+5 +20

+5 +20

mV

2

2

V/msec

Measured at Pin 11

4.9 5.3 5.7 4.75 5.3 5.85

V

100

100

W

AC Small Signal

80

80

WA

Notes

1 For XR-2212P the parameters, although guaranteed over the recommended operating conditions, are not 100% tested in

production.

Bold face parameters are covered by production test and guaranteed over operating temperature range.

Specifications are subject to change without notice

ABSOLUTE MAXIMUM RATINGS

Power Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18V

Input Signal Level . . . . . . . . . . . . . . . . . . . . . . . . 3V rms

Power Dissipation:

Ceramic Package: . . . . . . . . . . . . . . . . . . . . . . . 750mW

Derate Above TA = + 25°C . . . . . . . . 6mW/°C

Plastic Package: . . . . . . . . . . . . . . . . . . . . . . . . 625mW

Derate Above TA = + 25°C . . . . . . . . 5mW/°C

SYSTEM DESCRIPTION

The XR-2212 is a complete PLL system with buffered

inputs and outputs, an internal reference, and an

uncommitted op amp. Two VCO outputs are pinned out;

one sources current, the other sources voltage. This

enables operation as a frequency synthesizer using an

external programmable divider. The op amp section can

be used as an audio preamplifier for FM detection or as a

high speed sense amplifier (comparator) for FSK

demodulation. The center frequency, bandwidth, and

tracking range of the PLL are controlled independently by

external components. The PLL output is directly

compatible with CMOS, HCMOS and TTL logic families

as well as microprocessor peripheral systems.

The precision PLL system operates over a supply voltage

range of 4.5V to 20V, a frequency range of 0.01Hz to

300kHz, and accepts input signals in the range of 2mV to

3V rms. Temperature stability of the VCO is typically

better than 20 ppm/°C with the optimum timing resistor

value.

Rev. 2.01

4

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