MC13155D Ver la hoja de datos (PDF) - Motorola => Freescale

Número de pieza

componentes Descripción

Fabricante

MC13155D

Wideband FM IF

Motorola => Freescale 

Freescale SMeCm1i3c15o5nductor, Inc.

In the S–parameters measurements, the IF is treated as a

two–port linear class A amplifier. The IF amplifier is

measured with a single–ended input and output configuration

in which the Pins 16 and 7 are terminated in the series

combination of a 47 Ω resistor and a 10 nF capacitor to VCC

ground (see Figure 14. S–Parameter Test Circuit).

The S–parameters are in polar form as the magnitude

(MAG) and angle (ANG). Also listed in the tables are the

calculated values for the stability factor (K) and the Maximum

Available Gain (MAG). These terms are related in the

following equations:

K = (1– IS11 I2 – I S22 I2 + I ∆ I2 ) / ( 2 I S12 S21 I )

where: I ∆ I = I S11 S22 – S12 S21 I.

MAG = 10 log I S21 I / I S12 I + 10 log I K – ( K2 – 1)1/2 I

where: K > 1. The necessary and sufficient conditions for

unconditional stability are given as K > 1:

B1 = 1 + I S11 I2 – I S22 I2 – I ∆ I2 > 0

Figure 14. S–Parameter Test Circuit

IF

SMA 1.0n

Input

1 IN1

C2

2 DEC1

3 VCC1

4 DETO1

5 DETO2

IN2 16

DEC2 15

VEE1 14

RSSI 13

Buffer

RSSI 12

1.0n 47

C15

VEE

1.0n

100n 10µ +

1.0n

47

6 VCC2

VEE2 11

SMA

7 LIMO1

LIMO2 10

1.0n

8 QUAD1 QUAD2 9

IF

Output

6

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