參數(shù)資料
型號: 1245-TYPE
英文描述: Uncooled Laser Transmitter
中文描述: 非致冷激光發(fā)射器
文件頁數(shù): 8/12頁
文件大?。?/td> 199K
代理商: 1245-TYPE
Data Sheet
W3011
September 1999
1 GHz Quadrature Modulator
Lucent Technologies Inc.
5
Electrical Characteristics (continued)
Table 5. ac Specifications
Conditions unless otherwise noted: 2.7
≤ VCC ≤ 3.3 Vdc; TA = 25 °C ± 3 °C; RL = 50 , VAPC = 2.7 Vdc;
fRF = 900 MHz, fLOL = 130 MHz, fLOH = 1030 MHz, –15 dBm < PLOL, PLOH < –5 dBm;
I – I = 0.4 cos(2
πt 80 kHz), Q – Q = 0.4 cos(2πt 80 kHz – π/2), Vbias of I, I , Q, and Q = 1.22 Vdc.
Parameter
Min
Typ
Max
Unit
I & Q
I & Q Signal Path 0.5 dB Bandwidth
5
MHz
I & Q Input Resistance
200
k
I & Q Input Capacitance to Ground
5
pF
I & Q Input Differential Signal for Max Output
0.8
Vp-p
Offset Mixer
LOL Input Impedance
50
LOH Input Impedance
50
LO Input Impedance (pins LC1, LC2)
480//1
//pF
LOL Input IP3
10
dBm
Modulation Accuracy (POUT = –1 dBm)
Carrier Suppression (POUT = –1 dBm)
–35
–28
dBUSB
Carrier Suppression (entire usable APC range)
–26
dBUSB
Origin Offset (DQPSK inputs, all usable APC levels)
–23
dBc
Error Vector Magnitude (See Explanation of Error Vector Magnitude
(EVM) Testing section.)
2.5
5
%
Lower Sideband (LSB) Suppression (See Figure 3.)
–43
–34
dBUSB
RF Output
Output Power (0.8 Vp-p differential or single-ended 80 kHz sine-wave
inputs to I and Q, with 90° between I and Q)
–1
3
dBm
Adjacent Channel Suppression (0.282 Vrms differential I and Q inputs,
π/4 – DQPSK modulation, random data):
Per PDC (RCR STD-27):
±50 kHz, All Usable APC Levels
±100 kHz, All Usable APC Levels
±100 kHz, Max RF Output (APC > 2.2)
Per IS-136/IS-137 800 MHz Digital Mode:
±30 kHz, All Usable APC Levels
±60 kHz, All Usable APC Levels
–65
–75
–45
–60
–55
–62
–65
–36
–50
dBc
Noise Floor Suppression, FC ± >100 kHz
–120
–112
dBc/Hz
APC (Automatic Power Control) Function
Range of Usable Output Power Control for Japan PDC (RCR STD-27),
from Max Power at APC = 2.7 V to Minimum APC Voltage Where
Requirements for ACP and Carrier Suppression Are Still Met Using
π/4 – DQPSK/α = 0.5 Modulation at 0.282 Vrms Differential I and Q
Inputs:
Offset Mixer Not Used
Offset Mixer Used
29
39
40
45
dB
Output Power Variation Due to Temperature, within Usable Control Range
4
6
dB
RF Power Change Time (after APC change)
2
s
APC Voltage for Max Output Power
2.2
Vdc
APC Voltage for Min Output Power
0.8
Vdc
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