T5744-TKS 데이터 시트보기 (PDF) - Atmel Corporation

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T5744-TKS

UHF ASK/FSK Receiver

Atmel Corporation 

T5744

Electrical Characteristics (continued)

Parameters

Maximum input level

Local Oscillator

Operating frequency range

VCO

Phase noise VCO / LO

Spurious of the VCO

VCO gain

Loop bandwidth of the PLL

Capacitive load at Pin LF

XTO operating frequency

Test Conditions

Input matched according to

Figure 6, BER £ 10-3

fosc = 432.92 MHz

at 1 MHz

at 10 MHz

at ± fXTO

For best LO noise

(design parameter)

R1 = 820 W

C9 = 4.7 nF

C10 = 1 nF

XTO crystal frequency,

appropriate load capacitance

must be connected to XTAL

fXTAL = 6.764375 MHz (EU)

fXTAL = 4.90625 MHz (US)

Series resonance resistor of

the crystal

Static capacitance of the

crystal

Analog Signal Processing

Input sensitivity

Sensitivity variation for the

full operating range

compared to

Tamb = 25°C, VS = 5 V

Sensitivity variation for full

operating range including IF

filter compared to

Tamb = 25°C, VS = 5 V

S/N ratio to suppress inband

noise signals

fXTO = 6.764 MHz

4.906 MHz

Input matched according to

Figure 6

ASK (level of carrier)

BER £ 10-3 (Manchester),

fin = 433.92 MHz/ 315 MHz

T = 25°C, VS = 5 V, fIF = 1 MHz

BR_Range0 (1 kBd)

BR_Range1 (2 kBd)

BR_Range2 (4kBd)

BR_Range3 (8 kBd)

fin = 433.92 MHz/ 315 MHz

fIF = 1 MHz

PASK = PRef_ASK + DPRef

fin = 433.92 MHz/ 315 MHz

fIF = 0.79 MHz to 1.21 MHz

fIF = 0.73 MHz to 1.27 MHz

PASK = PRef_ASK + DPRef

Symbol

Pin_max

fVCO

L (fm)

KVCO

BLoop

CLF_tot

Min.

299

Typ.

-93

-113

-55

190

100

Max.

-20

Unit

dBm

449

MHz

-90

-110

-47

dBC/Hz

dBC/Hz

dBC

MHz/V

kHz

10

nF

fXTO

6.764375 6.764375 6.764375 MHz

-30 ppm

+30 ppm

4.90625 4.90625 4.90625

MHz

-30 ppm

+30 ppm

RS

150

W

220

W

Co

6.5

pF

PRef_ASK

DPRef

DPRef

SNR

-107

-110

-112

dBm

-105

-108

-110

dBm

-103

-106

-108

dBm

-101

-104

-106

dBm

+2.5

-1.5

dB

+5.5

-1.5

dB

+7.5

-1.5

dB

10

12

dB

13

4521B–RKE–01/03

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