MODEL 5868
10.7 GB/S, 11V DRIVER AMPLIFIER
PRODUCT SPECIFICATION
11 Vamp, 10.7 Gpbs modulator driver
Linear amplifier with 28 dB small signal
gain and 11.7 GHz of bandwidth
High gain with low power dissipation
(3 watts at 11 Vamp)
Temperature compensated design for
output stability
AC coupled amplifier includes bias
network, crossing point control &
adjustable output voltage
The Picosecond Pulse Labs Model 5868 driver amplifier is intended for use as a modulator driver or
as a linear amplifier.
The 5868 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.
Typical 10.7 Gb/s Eye Measurements
Output Response
Input Test Signal
750 mV Input Amplitude
[1]
11.5 V Output Amplitude [2]
[1] Input test signal generated by Agilent Pattern Generator model 70843B.
[2] Output response measured using Agilent oscilloscope model 86100A with model 83484A 50 GHz plug-in module.
PICOSECOND PULSE LABS, P.O. BOX 44, BOULDER, CO 80306, USA, TEL: 1.303.443.1249, FAX: 1.303.447.2236
WWW.PICOSECOND.COM
SPEC-4040147, REVISION 1, JANUARY 2011
PAGE 1 OF 5
MODEL 5868
10.7 GB/S, 11V DRIVER AMPLIFIER
PRELIMINARY PRODUCT SPECIFICATION
5868 Electrical Specifications
PARAMETER
SYMBOL
UNITS
MIN
TYPICAL
MAX
Polarity
COMMENTS
Non-inverting
Output Eye Voltage with Vgc = 0 V
VOUT
Vamp
Output Eye Voltage with Vgc = -15 V
VOUT
Vamp
1.5
Upper Frequency 3 dB Point
f3dB,upper
GHz
11.8
Small signal, relative to gain at 2 GHz
Lower Frequency 3 dB Point [1]
f3dB,lower
kHz
30
Small signal, relative to gain at 2 GHz
Small signal gain
S21
dB
28.5
Measured at 2 GHz
Output Power at 1dB Gain
Compression
P1dB
dBm
24.4
Measured at 2 GHz
tr,f
ps
31 / 36
ps
pspp
1.5
8
Rise / Fall Time
Additive Jitter [2]
RMS
Peak-to-Peak
Output Eye Voltage Variation Over
Operating Temperature Range
VOUT
%
Crossing Point Adjust
%
Crossing Point Variation Over
Operating Temperature Range
Overshoot / Undershoot
Input / Output Return Loss
50 MHz < f < 5 GHz
5 GHz f < 12 GHz
Noise Figure
10.5
11
Vin = 0.75 Vamp, 10.7 Gb/s PRBS
2.5
Vin = 0.75 Vamp
10% to 90%, Vin = 0.75 Vamp,
10.7 Gb/s PRBS
Vin = 0.75 Vamp, 10.7 Gb/s PRBS,
measured at crossing point
Vgc = 0 V, Vin = 0.75 Vamp,
TCASE = 5 to 75C, 10.7 Gb/s PRBS
5
-13.5 / +17.5
5 V input at Vcp, Vin = 0.75 Vamp
%
5.0
0.75 Vamp Input, 10.7 Gb/s PRBS,
o
TCASE = 5 to 75 C, Vgc constant
%
5
10.7 Gb/s PRBS
S11, S22
dB
-16
-11
NF
dB
5.75
12
f = 1 GHz
[1] Measured via sagtime time domain measurement.
[2] Deconvolution is done by root sum of squares. Input jitter was 1.8 ps RMS / 10.7 ps pk-pk.
5868 Operating Specifications
PARAMETER
SYMBOL
Maximum allowed Input
UNITS
MIN
TYPICAL
Vamp
MAX
COMMENTS
1.5
Damage threshold for input
325 mA typical with VOUT = 11 Vamp
DC Voltage Supply (pos)
+VDC
VDC
8
8.25
8.5
DC Voltage Supply (neg)
-VDC
VDC
-5.25
-5
-4.75
Power Dissipation
Pdiss
W
3
3.3
VOUT = 11 Vamp, Vgc may be utilized to
lower the output level and lower the
power dissipated
Output Voltage Bias
Vbias
VDC
Operating Temperature
TCASE
o
Storage Temperature
TCASE
o
C
C
20 mA typical
-17
+33
2.5 k
-5
75
Case Temperature
-40
125
Case Temperature
resistor (DC current
3.5 mA),
Static sensitive device, limited 30 day warranty.
PICOSECOND PULSE LABS, P.O. BOX 44, BOULDER, CO 80306, USA, TEL: 1.303.443.1249, FAX: 1.303.447.2236
WWW.PICOSECOND.COM
PAGE 2 OF 5
SPEC-4040147, REVISION 1, JANUARY 2011
MODEL 5868
10.7 GB/S, 11V DRIVER AMPLIFIER
PRELIMINARY PRODUCT SPECIFICATION
Typical Output Voltage
versus Input Voltage
Typical Crossing Point versus Vcp
(Gain Control Bias = Vgc, TCASE = 35C)
Typical Small Signal S21
Typical Small Signal S11 and S22
measured at 20 dBm input power)
(measured at 20 dBm input power)
PICOSECOND PULSE LABS, P.O. BOX 44, BOULDER, CO 80306, USA, TEL: 1.303.443.1249, FAX: 1.303.447.2236
WWW.PICOSECOND.COM
SPEC-4040147, REVISION 1, JANUARY 2011
PAGE 3 OF 5
MODEL 5868
10.7 GB/S, 11V DRIVER AMPLIFIER
PRELIMINARY PRODUCT SPECIFICATION
5868 Mechanical Dimensions (in inches unless otherwise stated)
Ordering Information
Model Number
Connector Configuration *
5868-107
RF input SMA jack, RF output SMA jack, solder pins
* Other connector configurations may be available upon request.
Contact Information
Picosecond Pulse Labs
P.O. Box 44
Boulder, Colorado 80306, USA
Telephone: 1.303.443.1249
Fax: 1.303.447.2236
mailto:info@picosecond.com
Sales Support:
Telephone: 1.303.443.1249
Fax: 1.303.447.2236
Visit Us At:
www.picosecond.com
PICOSECOND PULSE LABS, P.O. BOX 44, BOULDER, CO 80306, USA, TEL: 1.303.443.1249, FAX: 1.303.447.2236
WWW.PICOSECOND.COM
PAGE 4 OF 5
SPEC-4040147, REVISION 1, JANUARY 2011
MODEL 5868
10.7 GB/S, 11V DRIVER AMPLIFIER
PRELIMINARY PRODUCT SPECIFICATION
Instructions for Use
The Picosecond Pulse Labs 5868 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 Label
Description
IN
SMA, signal input, Vamp 1.5 V (damage threshold)
+V
Positive DC voltage supply, 8.25 V (see Note 1 and Note 2)
GC
Vgc, Variable output control, -15 V Vgc 0 V (see Note 3)
-V
Negative DC voltage supply, -5.25 V V -4.75 V (see Note 2)
CP
Crossing point adjust, -5 V Vcp 5 V (see Note 4)
VB
DC Voltage bias, -17 VB +33 (see Note 5)
NC
No connection / Not used
GND
Ground connection
OUT
SMA, signal output
Warning: The 5868 requires a ground connection at pin #7 prior to voltage application to prevent damage.
1
2
3
4
5
6
7
NOTES:
Note 1: At 8.25V, approximately 3.0W is dissipated.
Note 2: No power sequencing is necessary. Voltages may be applied in any order after ground is applied.
Note 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).
Note 4: The crossing point may vary until unit achieves thermal equilibrium.
Note 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 k resistor.
PICOSECOND PULSE LABS, P.O. BOX 44, BOULDER, CO 80306, USA, TEL: 1.303.443.1249, FAX: 1.303.447.2236
WWW.PICOSECOND.COM
SPEC-4040147, REVISION 1, JANUARY 2011
PAGE 5 OF 5