MSM7583 데이터 시트보기 (PDF) - Oki Electric Industry

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MSM7583

π/4 Shift QPSK MODEM

Oki Electric Industry 

¡ Semiconductor

MSM7583

Analog Interface Characteristics

(VDD = 4.5 V to 5.5 V, Ta = –25°C to +70°C)

Parameter

Symbol

Condtion

Min. Typ. Max. Unit

Output Resistance Load

RLIQ I+, I–, Q+, Q–, ENV

10

—

— kW

Output Capacitance Load

CLIQ I+, I–, Q+, Q–, ENV

—

—

20

pF

VDC1 I+, I–, Q+, Q– (TXW = 0)

1.55

1.6

1.65

V

I+ (CR0 – B5 = 1)

VDC2 when not modulated

—

1.77

—

V

Output DC Voltage Level

Q+ (CR0 – B5 = 1)

VDC3 when not modulated

—

1.67

—

V

VDC4 ENV (TXW = 0)

—

1.35

—

V

VDC5 ENV (TXW = 1, CR0 – B2 = 0, TXD = 0) —

1.72

—

V

VDC6 ENV (TXW = 1, CR0 – B2 = 1, TXD = 0) —

1.63

—

V

Output AC Voltage Level

I+, I–, Q+, Q–

VAC (TXW = 0 continuous input)

340

360

380 mVPP

Offset Voltage Difference

Difference among

VOFF I+, I–, Q+, and Q–

–20

—

+20 mV

Output DC Voltage Adjustment Level Range DCVL

—

—

±45

— mV

Output AC Voltage Adjustment Level Range ACVL

—

—

±4

—

%

Out-of-band Spectrum

P600 600 kHz detuning (*)

P900 900 kHz detuning (*)

60

—

—

dB

65

—

—

dB

Modulation Accuracy

EVM

—

—

1.0

3.0 % rms

Demodulator IF Input Level

IFV IFIN input level

0.5

—

VDD

VPP

RIF

—

IFIN Input Impedance

CIF

—

—

20

— kW

—

5

—

pF

SG Output Voltage

VSG

—

—

2.0

—

V

SG Output Impedance

RSG

—

—

2

— kW

SG´AGND 0.1 mF

SG warm-up Time

TSG (Rise Time to 90% of max.

—

400

—

ms

level.)

Modulator D/A

Conversion Sampling Frequency FSDA

—

—

1.92

— MHz

Modulator D/A

Conversion Offset Frequency

FCDA

—

—

380

— kHz

* Power attenuation at 600 kHz or 900 kHz ±96 kHz as referred to two times of the power in

frequency band of 0 to 96 kHz

13/23

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