New features, higher densities, and faster switching speeds in modern electronics are driving the need for lower supply voltages. Designers need to amplify the power rails, look for high-frequency interfering signals, measure ripple, and analyze coupling effects within tighter tolerances. Oscilloscopes often don't have enough bias to move the noise and ripple displacement on the DC rail to the center of the screen so that the desired measurements can be made.
The TPR1000 and TPR4000 probes provide a low-noise measurement solution (oscilloscope and probe), which is critical to distinguish the noise of the oscilloscope and probe from the noise and ripple of the DC power supply under test. The higher input impedance in the probe minimizes the impact of the oscilloscope load on the DC track (50 K @dc). The higher the bandwidth provided by the probe, the more content (harmonics, faster ripples, etc.) that may affect the data signal, clock, etc. on the DC track.
The TPR1000 and TPR4000 provide best-in-class solutions for power integrity and verification engineers in the high-speed (P), low-power (handset) and switched-mode power supply markets. The probe design offers the lowest noise, high bandwidth, and 60 V bias, flexible connectivity options to address customer challenges, and multiple software packages to meet the needs of the digital power management market.
How it works. The block diagram shows the main circuit blocks or modules in the TPR1000 and TPR4000 probes.
TPR1000 and TPR4000 functionality is achieved by extending the oscilloscope's bias capability while maintaining a low-noise signal path in the instrument. The linear dynamic range can be used using the DC bias control of the low-frequency amplifier in the bias voltage operating window movement. When DC bias is not required, the LF amplifier can be disconnected by setting the coupling mode to DC suppression in the instrument's vertical menu. Bypass capacitors act as a low-impedance path for high-frequency components while blocking low-frequency components. Because the TPR1000 and TPR4000 are used to measure the low source impedance of the distribution plane, it is not recommended to measure the device with a source impedance of >1 as this may cause waveform distortion.
Key features: The TPR1000 and TPR4000 probes provide a low-noise, wide-bias range solution for measuring ripple on DC rails ranging from -60 to 60 VDC. Tektronix power rail probes provide the industry-leading low noise and large bias range needed to measure AC ripple from 200 vp-p to 1 vp-p below 4 GHz. Key features include:
Oscilloscope compatibility.
6 Series MSO, 5 Series MSO, 4 System MSO, 3 Series MSO, MDO3000, MDO4000C, MSO DPO5000B, DPO7000C, and DPO70000C DX SX
Bandwidth (DC coupling mode):
TPR1000: DC to 1 GHz
TPR4000: DC to 4 GHz
Bandwidth (DC Suppression Mode):
TPR1000: 10 kHz to 1 GHz
TPR4000: 10 kHz to 4 GHz
Linear dynamic range up to 60 V dc, 1 vp-p to bandwidth.
Attenuation: 125x
Measurement accuracy: DC linearity: <01%
Step response to long-term anomalies:
Noise: < 200 VP-P noise (20MHz bandwidth limit) on 6 Series MSOs
<1 MVP-P noise (full bandwidth) on 6 Series MSOs
Input impedance: 50 K DC to 10 Hz
50 ω ac > 100 khz
Temperature range at the tip position:
40 to +85 °C (standard accessory).
40 to +155 °C (high temperature cable option).
Bias: 60 V bias range.
Bias-setting error maximum:
Set the value to 2% +25 mv)
Typical: After SPC and probe zeroing (01% +2.5 mv)
The above content is compiled and shared by PRBTEK, Xi'an Puke Electronic Technology Co., Ltd. is committed to the research and development, production and sales of oscilloscope test accessories, covering products including current probes, differential probes, high-voltage probes, passive probes, power ripple probes, flexible current probes, near-field probes, logic probes, power probes and optical probes. It aims to provide users with high-quality probe accessories and create a well-known brand of probe accessories. For more information, please visit the official website** for consultation.