TH71112(2001) 데이터 시트보기 (PDF) - Melexis Microelectronic Systems

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TH71112
(Rev.:2001)

868/915MHz FSK/FM/ASK Receiver

Melexis Microelectronic Systems  

TH71112

868/915MHz

FSK/FM/ASK Receiver

DC Characteristics

all parameters under normal operating conditions, unless otherwise stated;

typical values at Ta = 23 °C and Vcc = 3 V

Parameter

Symbol

Condition

Min Typ

Standby current

Total supply current at low gain

Total supply current at high gain

Opamp input offset voltage

Opamp input offset current

Opamp input bias current

RSSI voltage at low input level

RSSI voltage at high input level

ISBY

Icc, low

Icc, high

Voffs

Ioffs

Ibias

VRSSI, low

VRSSI, high

ENRX=0

ENRX=1,

LNA at LOW GAIN

ENRX=1,

LNA at HIGH GAIN

IOAP – IOAN

0.5 * (IOAP + IOAN)

Pi = -65 dBm,

LNA at LOW GAIN

Pi = -35 dBm,

LNA at LOW GAIN

6.0 7.5

7.5 9.2

-20

-50

-100

0.5 1.0

1.25 1.9

Max

100

9.0

11.0

20

50

100

1.5

2.45

Unit

nA

mA

mA

mV

nA

nA

V

V

AC System Characteristics

all parameters under normal operating conditions, unless otherwise stated;

all parameters based on test circuits for FSK (Fig. 2), FM (Fig. 4) and ASK (Fig. 5), respectively;

typical values at Ta = 23 °C and Vcc = 3 V, RF at 868.3 MHz, second IF at 10.7MHz

Parameter

Symbol

Condition

Min Typ Max

Start-up time – FSK/FM

TFSK

ENRX from 0 to 1,

valid data at output

Start-up time – ASK

TASK

depends on ASK

detector time constant,

valid data at output

Input sensitivity – FSK

(narrow band)

Pmin, n

Input sensitivity – FSK

(wide band)

Pmin, w

Input sensitivity – ASK

(narrow band)

Input sensitivity – ASK

(wide band)

Maximum input signal – FSK/FM

PminA, n

PminA, w

Pmax, FM

Maximum input signal – ASK

Pmax, ASK

BIF2 = 40kHz

∆f = ±15kHz (FSK/FM)

BER ≤ 3⋅10-3

BIF2 = 150kHz

∆f = ±50kHz (FSK/FM)

BER ≤ 3⋅10-3

BIF2 = 40kHz

BER ≤ 3⋅10-3

BIF2 = 150kHz

BER ≤ 3⋅10-3

BER ≤ 3⋅10-3

LNA at LOW GAIN

BER ≤ 3⋅10-3

LNA at LOW GAIN

Spurious emission

Image rejection

Blocking immunity

VCO gain

Charge pump current

Pspur

∆Pimag

∆Pblock

KVCO

ICP

∆fblock > ±2MHz, note 1

Notes: 1. desired signal with FSK/FM or ASK modulation, CW blocking signal

0.9

-109

R3•C12

+

TFSK

-102

-108

-104

0

-10

-70

65

57

250

60

Unit

ms

ms

dBm

dBm

dBm

dBm

dBm

dBm

dBm

dB

dB

MHz/V

µA

TH71112 Data Sheet

3901071112

Page 9 of 20

Nov. 2001

Rev. 005

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