10.7 Gb/s Driver Amplifier
PSPL5868 Datasheet
The Model PSPL5868 driver amplifier is intended for use as a modulator
driver or as a linear amplifier. This device includes internal temperature
compensation for excellent output stability over temperature, and exhibits
both high output and low power dissipation. It also incorporates internal
sequencing circuitry, making it insensitive to power supply application
sequence.
Key performance specifications
11 V output amplitude 10.7 Gb/s Modulator Driver
Linear amplifier with 28 dB gain
30 kHz to 11.8 GHz bandwidth
Temperature compensated design for output stability
Includes bias network, crossing point control & adjustable output
voltage
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Datasheet
Typical 10.7 Gb/s Eye Measurements
Typical performance plots
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PSPL5868 10.7 Gb/s Driver Amplifier
Microwave frequency response
Instructions
The PSPL5868 10.7 Gb/s modulator driver may be operated using only
three of the available 7 pins. The DC pins required for operation are 1, 3,
and 7. The RF connectors and DC pins are diagramed and defined below.
Pin Descriptions
Pin #
Pin Lable
Description
IN
SMA, signal input, Vamp≤ 1.5 V (damage threshold)
1
+V
Positive DC voltage supply, 8.25 V 1 2
2
GC
VgcVariable output control, -15V ≤Vgc≤ 0V 3
3
-V
Negative DC voltage supply, -5.25 V ≤ V ≤ -4.75 V 2
4
CP
Crossing point adjust, -5V ≤Vcp≤ 5V 4
5
VB
DC Voltage bias, -17 ≤ VB ≤ +33
6
NC
No connection / Not used
7
GND
Ground connection
OUT
SMA, signal output
5
Warning: The PSPL5868 requires a ground connection at pin#7 prior to
voltage application to prevent damage.
1
At 8.25V, approximately 3.0W is dissipated.
2
No power sequencing is necessary. Voltages may be applied in any order after ground is applied.
3
Output Control: With VGC at 0V, or left floating (disconnected), the driver will provide maximum gain and maximum output voltage. The user may decrease VGC to decrease the RF signal gain when the driver
is operating in the linear regime, or to reduce the output voltage level when the driver is operated in saturation (this will also reduce the power dissipated).
4
The crossing point may vary until unit achieves thermal equilibrium. VCP > 0 V will lower the output crossing point and increase power dissipation. Care must be taken to ensure that the positive supply current
does not exceed 400 mA.
5
Voltage Bias: The VB pin allows the user to apply a low current (less than 3.5 mA) DC offset to the Signal Output for biasing electro-optic modulators through a 2.5 kΩ resistor.
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Datasheet
Specifications
Parameter
Symbol
Units
Minimum
Impedance
Z
Ohms
50
Upper 3 dB freq.
fc,h
GHz
11.8
Relative to gain at
2 GHz
Lower 3 dB freq.
fc,l
kHz
30
Relative to gain at
2 GHz
Small signal gain
S21
dB
28.5
Measured at 2 GHz
Max Power Out
(-1 dB gain comp)
P1dB
dBm
24.4
Measured at 2 GHz
Output Eye Voltage
with VGC = 0 V
VOUT
Vamp
11
Vin = 0.75 Vamp,
10.7 Gb/s PRBS
Output Eye Voltage
with VGC = -15 V
VOUT
Vamp
1.5
Return Loss, Input and Output
S11, S22
dB
16
11
50 MHz < f < 5 GHz
5 GHz ≤ f < 12 GHz
Rise Time
tr
ps
31
Fall Time
tf
ps
36
10-90%, Vin =
0.75 Vamp, 10.7 Gb/
s PRBS
Additive Jitter
RMS
Peak-to-Peak
ps
pspp
1.5
8
Vin = 0.75 Vamp,
10.7 Gb/s PRBS,
meas. at crossing
point
Overshoot
%
5
10.7 Gb/s PRBS
Undershoot
%
5
10.7 Gb/s PRBS
Eff. Input RMS Noise Voltage
μV rms
152
10.5
Typical
Maximum
2.5
Comments
Vin = 0.75 Vamp,
10.7 Gb/s PRBS
Noise Figure
NF
dB
5.75
f = 1 GHz
Output Eye Voltage Variation
Δ VOUT
%
+/- 5
Vgc = 0 V, Vin =
0.75 Vamp, TCASE =
-5 to 75°C
-13.5 / +17.5
+/- 5 V input at Vcp,
Vin = 0.5 Vamp
+/- 5
Vin = 0.75 Vamp,
10.7 Gb/s PRBS,
TCASE = -5 to 75°C
Crossing Point Adjust
%
Crossing Point Variation
%
+/- 12
Polarity
Non-Inverting
Coupling
AC, input and output
RF Connectors
SMA jacks (f)
DC Connector
Solder pins
Voltage Supply (+)
+VDC
V
8
8.25
8.5
Voltage Supply (-)
-VDC
V
-5.25
-5
-4.75
Supply Current (+)
+IDC
mA
325
Supply Current (-)
-IDC
mA
20
Power Dissipation
Pdiss
W
3
Max Allowed Input
Vamp
Output Voltage Bias
Vbias
VDC
-17
Gain Control Bias
Vgc
VDC
-15
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0
Vout = 11 Vamp [1]
3.3
Vout = 11 Vamp [2]
1.5
Input damage
threshold
33
No connection
required [3]
0
No connection
required
PSPL5868 10.7 Gb/s Driver Amplifier
Parameter
Symbol
Units
Minimum
Crossing Point Bias
Vcp
VDC
Operating Temp
TCASE
Storage Temp
Tstor
Warranty
One Year
Typical
Maximum
Comments
-5
5
No connection
required
Deg C
-5
75
Case tempurature
Deg C
-40
125
Case tempurature
Mechanical dimensions
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Datasheet
Ordering information
Models
PSPL5868 Datasheet
10.7 Gb/s DRIVER AMPLIFIER, SMA J-J
ASEAN / Australasia (65) 6356 3900
Belgium 00800 2255 4835*
Central East Europe and the Baltics +41 52 675 3777
Finland +41 52 675 3777
Hong Kong 400 820 5835
Japan 81 (3) 6714 3010
Middle East, Asia, and North Africa +41 52 675 3777
People's Republic of China 400 820 5835
Republic of Korea 001 800 8255 2835
Spain 00800 2255 4835*
Taiwan 886 (2) 2722 9622
* European toll-free number. If not accessible, call: +41 52 675 3777
Austria 00800 2255 4835*
Brazil +55 (11) 3759 7627
Central Europe & Greece +41 52 675 3777
France 00800 2255 4835*
India 000 800 650 1835
Luxembourg +41 52 675 3777
The Netherlands 00800 2255 4835*
Poland +41 52 675 3777
Russia & CIS +7 (495) 6647564
Sweden 00800 2255 4835*
United Kingdom & Ireland 00800 2255 4835*
Balkans, Israel, South Africa and other ISE Countries +41 52 675 3777
Canada 1 800 833 9200
Denmark +45 80 88 1401
Germany 00800 2255 4835*
Italy 00800 2255 4835*
Mexico, Central/South America & Caribbean 52 (55) 56 04 50 90
Norway 800 16098
Portugal 80 08 12370
South Africa +41 52 675 3777
Switzerland 00800 2255 4835*
USA 1 800 833 9200
Updated 10 April 2013
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11 Jul 2014
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