2000 Aug 10

7

Philips Semiconductors

Product specification

Analog cordless telephone IC

UAA2062

Table 2

the power saving operation modes

The FM receiver part

The FM receiver has the programmability to operate for all country channels, including the 25 U.S. channels, without the

need for external switching circuitry (see Fig.3).

The gain and input impedance of the LNA are programmable. The LNA also includes a programmable capacitance to

avoid external manual fine tuning.

POWER OPERATING MODE

TYPICAL CURRENT

CONSUMPTION (mA)

MAXIMUM CURRENT

CONSUMPTION (mA)

active mode

27

36

RX mode

11

15

standby mode

0.35

0.5

inactive mode

0.05

0.1

handbook, full pagewidth

FCA121

DUAL PLL

FREQUENCY

SYNTHESIZER

RX VCO

LPF

47

RXPD

43

RXLF

45

LO1O

44

LO1I

CRYSTAL

OSCILLATOR

RSSI

LOOP

FILTER

VCO

crystal

(1)

24

LO2I

23

LO2O

35

RSSI

×

×

×

amplifier

IF limiter

LNA

1st mixer

2nd mixer

40

BPFI

RF

39

MX1O

37

MX2O

34

LIMI

32

PLLO

31

DETO

36

MX2I

42

RFI

Vref

carrier

detect output

Fig.3 FM receiver schematic diagram.

(1) Values depend on the country application (see definition in Chapter “Channel frequencies”).