MC44826

4

MOTOROLA ANALOG IC DEVICE DATA

Figure 1. Typical Prescaler Input Sensitivity

Guaranteed Operating Area

0

5.0

RF In (MHz)

200

400

600

800

1000

1200

1400

–5.0

–15

–25

–35

–45

NOTE:

VCC = 4.5 to 5.5 V, TA = – 20° to +80°C

HF CHARACTERISTICS (See Figure 1)

Characteristic

Pin

Min

Typ

Max

Unit

DC Bias

3, 4

–

1.6

–

V

Input Voltage Range

mVrms

50–950 MHz

3, 4

10

–

315

950–1300 MHz

3, 4

50

–

315

Figure 2. RF Sensitivity Test Circuit

10, 11

2

34

8

I2C Bus Controller

RF Generator

(50

Ω)

5

+5.0 V

Frequency Counter

4.0 k

Ω

MC44826

50

Ω

1.0 nF

1.0 nF

HF In

VCC1

B5

+12 V

Device is in test mode, B5 and B3 are “On”, B1 is “Off”.

Sensitivity is the level of the HF generator on 50

Ω load.

7

B3

4.0 k