Variable-Gain Ultra-Wideband Voltage Amplifier
Features
Variable gain 30 to 70 dB (approx. ×30 to ×3000), switchable in 10 dB steps
Bandwidth 1 kHz … 1.1 GHz
Bandwidth, frequency response and pulse response independent of gain setting
Local and remote control
DC monitor output
Applications
Oscilloscope and transient-recorder preamplifier
Photomultiplier and microchannel-plate amplifier
Signal-booster for optical receivers and current amplifiers
Time-resolved pulse and transient measurements
Automated measurement systems
Block Diagram
Related Models
DUPVA-1-60
Gain values 20, 30, 40, 50, 60 dB
Upper cut-off frequency
1.2 GHz
Available Accessories
CA-SMA-BNC
SMA to BNC adapter
PS-15
power supply
input: 100 - 240 VAC
output: ±15 VDC, +400/–250 mA
LUCI-10
compact digital I/O interface for USB remote control, supports opto-isolation of amplifier signal path from PC USB port, 16 digital outputs, 3 opto-isolated digital inputs, bus-powered operation
Specifications
Test conditions
VS = ±15 V, TA = 25 °C, system impedance = 50 Ω
Gain
Gain values
30, 40, 50, 60, 70 dB
Gain accuracy
±0.1 dB (between settings) ±1 dB (overall)
Gain flatness
±0.15 dB
Frequency Response
Lower cut-off frequency
1 kHz
Upper cut-off frequency
1.1 GHz
Upper cut-off frequency rolloff
40 dB/oct.
Time Response
Rise/fall time (10 % - 90 %)
390 ps
Group delay
2.2 ns
Input
Input impedance AC
50 Ω
Input impedance DC
100 kΩ
Input VSWR (@ 30 dB gain)
1.1 : 1 (f < 1 GHz) 1.2 : 1 (f < 2 GHz)
Input VSWR (@ 40 - 70 dB gain)
1.7 : 1 (f < 1 GHz) 1.7 : 1 (f < 2 GHz)
50 Ω noise figure
1.9 dB (@ 70 dB gain) 2.5 dB (@ 40 - 60 dB gain)
Equivalent input voltage noise
330 pV/√Hz (@ 70 dB gain) 400 pV/√Hz (@ 40 - 60 dB gain)
1/f-noise corner
20 kHz
Output
Output impedance
50 Ω
Output power
P1dB 12 dBm (@ 100 MHz) 11 dBm (@ 500 MHz)
Output peak-to-peak voltage for linear amplification
2 V (@ 100 MHz) 1.7 V (@ 500 MHz)
Output VSWR
1.5 : 1 (f < 1 GHz) 1.7 : 1 (f < 2 GHz)
Third order intercept point IP3
20 dBm
Reverse isolation
80 dB
Dynamic range (without average)
62 dB (P1dB – min. detectable signal)
Monitor Output
Monitor output gain
1 (@ ≥100 kΩ load)
Monitor output impedance
50 Ω (designed for ≥100 kΩ load)
Monitor output voltage range ±10 V
Monitor output current
±25 mA
Monitor output bandwidth
DC ... 100 kHz
Digital Control
Control input voltage range
Low: –0.8 ... +0.8 V High: +1.8 ... +12 V
Power Supply
Supply voltage
±15 V
Supply current
+250 / –100 mA (without current consumption from Sub-D-connector)
Stabilized power supply output
±12 V / max. 50 mA, +5 V / max. 50 mA (Auxiliary voltage outputs Pin 1-4 Sub-D-connector)
Case
Weight
510 g (1.1 lb)
Material
AlMg4.5Mn, nickel-plated
Temperature Range
Storage temperature
–40 ... +100 °C
Operating temperature
0 ... +60 °C
Absolute Maximum Ratings
Signal input power
+13 dBm (f > 500 Hz)
Signal input DC voltage
±16 V (slope max. ±1 V/ms)
Signal output reverse power
+13 dBm
Signal output reverse DC voltage
+16 V / –12 V (slope max. ±1 V/ms)
Control input voltage
+16 V / –5 V
Power supply voltage
±17 V
Connectors
Input
SMA female
Output
SMA female
Power supply
Lemo® series 1S, 3-pin fixed socket (mating plug type: FFA.1S.303.CLAC52)
Pin 1: +15V
Pin 2: –15V
Pin 3: GND
Control port
Sub-D 25-pin, female, qual. class 2
Pin 1: +12V (stabilized power supply output)
Pin 2: –12V (stabilized power supply output)
Pin 3: AGND (analog ground)
Pin 4: +5V (stabilized power supply output)
Pin 5: Monitor output
Pin 6 - 8: NC
Pin 9: DGND (ground f. digital control pin 10 - 25)
Pin 10 - 13: NC
Pin 14: Digital control input: gain, LSB
Pin 15: Digital control input: gain
Pin 16: Digital control input: gain, MSB
Pin 17 - 25: NC
Remote Control Operation
General
Remote control input bits are opto-isolated and connected by logical OR to local switch setting. For remote control of the gain setting, set the local switch to “Ext.” and select the wanted gain setting via a 3-bit-code at the corresponding digital inputs:
Gain setting - corresponding inputs
Gain
Pin 14
Pin 15
Pin 16
30 dB
Low
Low
Low
40 dB
High
Low
Low
50 dB
Low
High
Low
60 dB
High
High
Low
70 dB
Low
Low
High
Typical Performance Characteristics
Frequency response (logarithmic)
Frequency response (linear)
Input reflection, S11
Input return loss, S11 (Linear Magnitude)
Output reflection, S22
Output return ross, S22 (Linear Magnitude)
Group delay
Dimensions
商品属性 [频率] 1 kHz … 1.1 GHz [可变增益] 30 to 70 dB