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PSPL8001 12.5 Gb/s Driver Amplifier LABware Module

PSPL8001 Datasheet

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PSPL8001 Datasheet

The PSPL8001 12.5 Gb/s Driver Amplifier LABware Module is designed for bench-top lab use. This LABware module can simply be plugged in with a line cord (either 110 V or 220 V) and the driver amplifier is ready for use. The PSPL8001 is ideal for driving Lithium Niobate optical modulators using NRZ signals for test and characterization experiments. The PSPL8001 can also be used as a linear amplifier with 26 dB gain and 12 GHz bandwidth for inputs less than ±150 mV (300 mVp-p with 50% duty cycle).

Key performance specifications
  • LABware bench-top instrument
  • 12.5 Gb/s Driver Amplifer
  • 7.5 Vpp output amplitude
  • Linear amplifier with 26 dB gain
  • 30 kHz to 12 GHz bandwidth
  • Integrated power supplies, amplitude, and crossing-point controls

Typical performance

PSPL8001-Datasheet--396130-9-N

PSPL8001-Datasheet--396130-10-N

PSPL8001-Datasheet--396130-11-N

The Amplitude (A) control has very little effect on the output voltage under small signal conditions. Generally, it should be set to 10.0 when the PSPL8001 is used as a linear amplifier. The Crossing Point (XP) control sets the bias point of the amplifier. It should be set to 5.0. Both the Amplitude (A) and Crossing Point (XP) controls have locking levers. Be sure that the locks are released before rotating the knobs.

The Crossing Point (XP) control provides an adjustment for the crossing point of NRZ signals. By shifting the bias point, it can also compensate for NRZ signals that do not have a Mark Ratio of 1:2, RZ signals, or signals with low or high duty cycles.

The PSPL8001 is AC-coupled at the Input and Output, and the average value of the output signal (the DC component) must be at 0 V. Most NRZ data streams are conditioned to have a 50% duty cycle when averaged over a long period, about a microsecond. Those signals make full use of the positive and negative halves of the amplifier’s operating range.

The average amplitude of low duty cycle signals can be virtually at the baseline. These signals use only one half of the PSPL8001 operating range, and the maximum output amplitude may be 4 V instead of 8 V. The Crossing Point (XP) control can shift the amplifier’s operating point and increase the output amplitude up to 6 V in some cases.

It is recommended that the PSPL8001 be driven with a negative polarity signal when the duty cycle is very low. Narrow positive pulses can generate excessive heat within the PSPL8001 and damage the amplifier. Similarly, large duty signals should be positive.

Typical 10.66 Gb/s eye measurements


PSPL8001-Datasheet--396130-12-N

Input from Tektronix PPG1601, PRBS=223–1, 500 mv



PSPL8001-Datasheet--396130-13-N

Output amplitude > 8 V

 

Caution: The PSPL8001 contains a static sensitive amplifier. To avoid damage from static electricity, always short the terminals of a device before connecting it to the input or output of the PSPL8001. Even coax cables must be shorted before making the connection.

Specifications

Large signal conditions

Parameter Symbol Units Minimum Typical Maximum Comments
Impedance Z ohms   50     
Output Eye Voltage
with Amplitude (A) control = 10.0 
VOUT Vamp 7.0  7.5    Vin = 0.5 Vamp, 12.5 Gb/s PRBS
Output Eye Voltage
with Amplitude (A) control = 0.0 
VOUT Vamp   3.2  4.0  Vin = 0.5 Vamp, 12.5 Gb/s PRBS
Rise Time tr ps   22  28  20-80%, Vin = 0.5 Vamp, 12.5 Gb/s PRBS
Fall Time tf ps   24  30 
Additive Jitter
   RMS
   Peak-to-Peak
   
ps
pspp
   
0.7 
 
2.0 
Vin = 0.5 Vamp, 12.5 Gb/s PRBS, meas. at crossing point
Crossing Point (XP) Adjust, Amplitude (A) control = 10.0    % ±10  ±15    Vin = 0.5 Vamp
Overshoot   %     12.5 Gb/s PRBS
Undershoot   %     12.5 Gb/s PRBS
Polarity Non-Inverting
Coupling AC, input and output
RF Connectors SMA jacks (f)

Operating specifications

Parameter Comments
Max Allowed Input 1.5 Max Vamp (damage threshold for input)
AC Power 100, 117, 200, or 230 VAC, 50/60 Hz, 15VA (60 Hz)
Environment
Operating
Storage
(Indoors, 80% relative humidity)
20 to 30 °C
0 to 50 °C
Safety Certifications Conforms to EN-061010-1 (CE mark), UL-1244 and IEC-348. Safety class I.
For lab use by qualified personnel.
Dimensions 9.6 x 7.5 x 1.7 in. (244 x 190 x 33 mm)
Weight 3.3 lbs. (1.5 kg)
Accessories USA power cord
Warranty One Year

Ordering information

Models
PSPL8001
DRIVER AMPLIFIER, 12.5G b/s, LABware