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參數資料
| 型號： | 1243-TYPE |
| 英文描述： | Uncooled Laser Transmitter |
| 中文描述： | 非致冷激光發射器 |
| 文件頁數： | 8/12頁 |
| 文件大小： | 199K |
| 代理商： | 1243-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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