Variable Output Pulse Driver

SKU:

$ 1,863.00

Applications:

  • Long Line Driver/ Level Translator
  • Laser Diode Driver
  • TTL/CMOS/ECL Device Testing
  • Amplifier Large Signal Response Testing
  • TDR Source for Cable Testing
  • A Mini-Modular Instrument™ (MMI)

Features:

  • tr= 800 ps Typical @ 5 V Output into 50 Ω
  • +5 V/-3 V Output HL/LL into 50 Ω
  • +10 V/-6 V Output HL/LL into 1 MΩ
  • Normal or Inverted Output
  • f/2 Mode for Square Wave Output
  • fmax to 300 MHz @ 3.5 V Output
  • 50 Ω TTL Compatible Input requires less than 1 V for triggering
  • Universal Differential Input with a floating 100 Ω Termination, logically ORed with TTL input
  • Self-contained 1.3 x 2.9 x 8.1-in. Module includes a ±8.5 V/17 V DC AC/DC adapter

Description

The PRL-470D is a high speed 50 Ω Line Driver/Level Translator with independently variable output Hi and Lo levels. It has a TTL and a Universal Differential Input. The TTL input has a 50 Ω to ground termination, and Universal Differential Input has a floating 100 Ω termination. The floating differential input accepts LVDS, LVPECL, NECL, RS 422, or any 100 mVPP minimum differential signal within the window of -2 V to +3 V. The TTL and Universal Differential Input are logically ORed; therefore a Hi level applied to either input can be used as a gate signal. The PRL-470D is an improved version of the earlier Model PRL-470B. The connectors for the universal differential input are SMA, and the connector for the TTL input is BNC. The output connector is SMA.

The output Hi and Lo levels are independently variable from 0 V to +5 V and 0 V to –3 V into 50 Ω, respectively, or +10 V and –6 V into 1 MΩ. The maximum output peak to peak swing is 8 V into 50 Ω, or 16 V into 1 MΩ. The back-terminated 50 Ω output can drive long 50 Ω lines with or without load termination. A Normal/Invert switch provides output logic polarity selection, and an f/2 switch provides square wave output. The 50 Ω TTL input requires less than 1 V for triggering.

The 800 ps rise time output makes the PRL-470D a cost effective TDR source for testing cables. Typical maximum clock rate is 300 MHz @ 3.5 VPP output and 250 MHz @ 5 VPP output, well suited for testing logic circuits of different families, amplifiers and many semiconductor devices.

The trigger output generates > 400 mV into 50 Ω or > 800 mV into high impedance, and is back terminated into an AC coupled 50 Ω source. The self-contained 1.3 x 2.9 x 8.1-in module is supplied with a 8.5 V/+17 V AC/DC adapter.

Fig. 1, PRL-470D Block Diagram
PRL-470D, Output Side

SPECIFICATIONS (0° C ≤ TA ≤ 35° C)*

Symbol Parameter Min Typ Max Unit Comments
RIN_TTL Input Resistance, TTL 49.5 50.0 50.5 Ω
RIN_DIFF Input Resistance, Universal Differential 100 Ω
VIL_TTL TTL input Low Level -0.5 0.0 0.5 V
VIH_TTL TTL input High Level 0.8 0.85 5.0 V
VIL_DIFF Differential Input, Low Level -2 3 V
VIH_DIFF Differential Input, High Level -2 3 V
VINPP Differential Input, Peak to Peak -2 ±0.1 3 V
VOL1 Output Low Level, RL = 50 Ω -3 0 V
VOL2 Output Low Level, RL = 1 MΩ -6 0 V
VOH1 Output High Level, RL = 50 Ω 0 5 V
VOH2 Output High Level, RL = 1 MΩ 0 10 V
VPP1 Output Voltage Swing, RL = 50 Ω 0.8 8 V
VPP2 Output Voltage Swing, RL = 1 MΩ 1.6 16 V
IDC1 Max. DC Input Current, +8.5 V +380 +390 mA
IDC2 Max. DC Input Current, -8.5 V -465 -465 mA
IDC3 Max. DC Input Current, +17 V +140 +180 mA
VDC1 DC Input Voltage, +8.5 V +7.5 +8.5 +12 V
VDC2 DC Input Voltage, -8.5 V -12 -8.5 -7.5 V
VDC3 DC Input Voltage, +17 V +15 +17.5 +20 V
VAC1 AC/DC Adapter Input Voltage 108 120 132 V 120 VAC
VAC2 AC/DC Adapter Input Voltage 216 240 234 V 220 VAC
tPLH/tPHL_VO Prop. Delay to Output ↑/↓ 5.5 7.5 ns VOL = 0 V, VOH = 5 V
tr1 Output Rise Time (10%-90%) 850 900 ps VOL = 0 V, VOH = 5 V
tf1 Output Fall Time (10%-90%) 1100 1600 ps VOL = 0 V, VOH = 5 V
tr2 Output Rise Time (10%-90%) 625 800 ps VOL = 0 V, VOH = 3.5 V
tf2 Output Fall Time (10%-90%) 950 1100 ps VOL = 0 V, VOH = 3.5 V
tr3 Output Rise Time (10%-90%) 750 800 ps VOL = -2.5 V, VOH = 2.5 V
tf3 Output Fall Time (10%-90%) 1200 1300 ps VOL = -2.5 V, VOH = 2.5 V
tr4 Output Rise Time (10%-90%) 950 1000 ps VOL = -3 V, VOH = 5 V
tf4 Output Fall Time (10%-90%) 1400 1600 ps VOL = -3 V, VOH = 5 V
tSKEW Skew between VO↑ and VO↓ 100 300** ps VOL = 0 V, VOH = 5 V,
f = 50 MHz, PW = 5 ns
fmax1 Maximum Clock Frequency 225 250 MHz VOL = 0 V, VOH = 5 V
fmax2 Maximum Clock Frequency 250 300 MHz VOL = 0 V, VOH = 3.5 V
fmax3 Maximum Clock Frequency 250 300 MHz VOL = -2.5 V, VOH = 2.5 V
fmax4 Max. Input Clock Frequency 500 600 MHz Square Wave Mode
PWMIN Minimum Output Pulse Width 2.0 2.5 ns VPP = 5 V
ΔPW Output PW change, VO↑ to VO↓ 200 400* ps VO = 0 to 5 V, PW = 5 ns
VO_Trig Trigger Output 1.0 1.2 V RL = 50 Ω, f ≤ 250 MHz
Size 1.3 x 2.9 x 8.1 in.
Weight 13 Oz
** Skew and ∆PW may vary with different output level, frequency and pulse width settings.