Celebrating 40 Years of Innovation: 1968-2008

Products: High Voltage Amplifiers

Model PZD700 Piezo Driver/Amplifier

Now equipped with SHV type high-voltage output connectors.

Trek high-voltage DC-stable piezo drivers / amplifiers are designed to provide precise control of output voltages in one of three, user specified, voltage ranges: 0 to ±700 V (±100 mA), 0 to +1.4 kV (±50 mA), or 0 to -1.4 kV (±50 mA). Inverting and noninverting input configurations are available. The Model PZD700 has an adjustable gain to 300 V/V.

Applications for the Model PZD700 include piezoelectric drivers & controls, laser modulation, semiconductor research, and piezoelectric vibration damping. Features include an all-solid-state design, high slew rate, and a small signal bandwidth of greater than 50 kHz for all voltage ranges. The four-quadrant active output stage sinks or sources current into reactive or resistive loads throughout the output voltage range. This technique is essential for achieving the accurate output responses and high slew rates demanded by reactive loads.

The Model PZD700 is protected against overvoltage and overcurrent conditions that may be generated by active loads or by output short circuits to ground. Precision voltage and current monitors provide low-voltage representations of the high-voltage output and load current for monitoring purposes or for use as feedback signals in a closed-loop system.

The Digital Enable feature provides a connection for a remote device to turn ON and OFF the high voltage of the instrument. This makes the Model PZD700 suitable for automated or computer controlled systems.

The Model PZD700 has a Dynamics Adjustment feature which can be used to optimize the AC response of the output signal. Front panel LED indicators display power on, high-voltage on, and voltage regulation or limit status of the unit. The Model PZD700 is available in single channel or dual channel configurations and can be operated on a bench top or, with optional hardware, in a standard 19-inch rack.

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PERFORMANCE

  • DC Voltage Gain
    0 to 300 V/V, adjustable using front panel potentiometer.
  • DC Voltage Gain Accuracy (input to output)
    Better than 0.1% for gain set for 200 V/V.
  • Offset Voltage
    Less than ±500 mV.
  • Output Noise (all ranges)
    Less than 50 mV rms to 20 kHz for a 1 nF load.
    Less than 100 mV rms to 20 kHz with no load.
    Measured with the true rms feature of the Hewlett Packard Model 34401A digital multimeter.
  • Small Signal Bandwidth (-3 dB)
    DC to greater than 50 kHz.
  • Settling Time to 1%
    Less than 50 µs when critically damped.
  • Stability (with factory gain set for 200 V/V)
    • Drift with Temperature
      Less than 100 ppm/°C.
    • Drift with Time
      Less than 50 ppm/hr, noncumulative.
  • Automatic Power Limit
    Automatically limits the internal power dissipation to protect the Model PZD700 from overheating. The following graph illustrates the automatic power limit.

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PRODUCT FEATURES

  • The Model PZD700 piezo driver / amplifier is available as a single or duel channel instrument. The following features are specific to each amplifier channel.
  • Digital Enable
    A BNC connection for a TTL compatible signal to turn on and off the high-voltage output is provided for each channel. A TTL high (or open) turns off the high-voltage output. A TTL low turns on the high-voltage output.
  • Gain Control
    The DC gain of the Model PZD700 is adjustable from 0 to 300 V/V.
  • Dynamics Adjustment
    One graduated potentiometer is used to optimize the AC damping and response of the output signal under various load configurations.
  • High-Voltage LED
    Front panel green LED illuminates when the high-voltage is on.
  • Input Configuration
    The PZD700 is factory configured as a noninverting amplifier. An inverting amplifier configuration is available. Specify when ordering or contact TREK, INC. for more information.
  • Voltage Monitor
    A buffered output providing a low-voltage replica of the high-voltage output.
    • Scale
      1/200th of the high-voltage output.
    • DC Accuracy
      Better than 0.1% of full scale.
    • Offset Voltage
      Less than 5 mV.
    • Output Noise
      Less than 10 mV rms (measured using the true rms feature of the Hewlett Packard Model 34401A digital multimeter).
    • Output Impedance
      Less than 47 ohms.
  • Current Monitor
    A buffered output providing a low-voltage representation of the load current.
    • Scale
      0.1 V/mA.
    • DC Accuracy
      Better than 1% of full scale.
    • Offset Voltage
      Less than 25 mV.
    • Output Noise
      Less than 20 mV rms (measured using the true rms feature of the Hewlett Packard Model 34401A digital multimeter).
    • Output Impedance
      Less than 0.1 ohm.
  • Power On LED
    Front panel green LED illuminates when the power is on.
  • Limit Indicator
    A yellow indicator will illuminate when the
    Model PZD700 fails to produce the required high-voltage output such as from the Automatic Power Limit or output shorting.

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OUTPUT

  • Bipolar Model
    0 to ±700 V DC or peak AC
    • Current
      0 to ±100 mA.
    • Slew Rate (10% to 90%, typical)
      Greater than 150 V/µs.
    • Large Signal Bandwidth (1% distortion)
      DC to greater than 15 kHz.
  • Unipolar Model
    0 to +1.4 kV DC or peak AC
    • Current
      0 to ±50 mA.
    • Slew Rate (10% to 90%, typical)
      Greater than 100 V/µs.
    • Large Signal Bandwidth (1% distortion)
      DC to greater than 12 kHz.
  • Unipolar Model
    0 to -1.4 kV DC or peak AC voltage range
    • Current
      0 to ±50 mA.
    • Slew Rate (10% to 90%, typical)
      Greater than 100 V/µs.
    • Large Signal Bandwidth (1% distortion)
      DC to greater than 12 kHz.

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AMPLIFIER INPUT

  • Input Voltage Range
    0 to ±10 V DC or peak AC. (See Gain Control.)

    Input Impedance (noninverting)
    90 kohm, nominal.

    Input Impedance (inverting)
    1 Mohm, nominal.

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ACCESSORIES

  • Accessories Supplied
    • Operator's manual, SHV mating connector for each channel, and line cord.

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GENERAL

  • Dimensions
    • One Channel
      110 mm H x 220 mm W x 445 mm D
      (4.3" H x 8.7" W x 17.5" D).
    • Two Channel
      110 mm H x 434 mm W x 445 mm D
      (4.3" H x 17" W x 17.5" D).
  • Weight
    • One Channel
      5 kg (11 lb).
    • Two Channel
      10 kg (22 lb).
  • High-Voltage Output Connector
    SHV connector.
  • High-Voltage Output Impedance
    11 ohms.
  • Amplifier Input
    BNC connector.
  • Digital Enable Connector
    BNC connector.
  • Power Requirements
    • Line Supply
      One of two ranges: 90 to 127 V AC or 180 to 250 V AC, at 48 to 63 Hz.
    • Power Consumption
      90 VA, single channel.
      175 VA, dual channel.
  • AC Line Receptacle
    Standard three-prong AC line connector with an integral fuse holder.
  • Operating Conditions
    • Temperature
      0 °C to 40 °C.
    • Relative Humidity
      To 85%, noncondensing.

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CERTIFICATION

TREK, INC. certifies that each Model PZD700 is tested and calibrated to specifications using measurement equipment traceable to the National Institute of Standards and Technology or traceable to consensus standards.

All specifications are with no load unless otherwise noted. Factory standard settings are for ±700 volt range, a gain set for 200 V/V, with a noninverting input.

All specifications are with no load unless otherwise noted and are subject to change.

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