Coaxial test probe ADA400A

interfacehigh-frequency

Description
High‑speed serial differential signalling standards require highly accurate characterization. Tektronix low‑voltage differential probes deliver industry‑leading signal fidelity and bandwidth so you can observe signals in full detail. The TriMode™ architecture simplifies measurement acquisition by allowing common‑mode, single‑ended and differential measurements with a single connection.

Models and specifications (table)
Model | Bandwidth | Input impedance | Attenuation | Maximum voltage | List price (USD)
ADA400A | 1 MHz | 1 MΩ | ~55 pF | 100x, 10x, 1x, 0.1x | US $3,750
TDP1500 | 1.5 GHz | 200 kΩ / ≤1 pF | 1X / 10X | ±25 V (DC + pk AC) | US $7,930
P6247 | 1 GHz | 200 kΩ / ≤1 pF | 1X / 10X | ±25 V (DC + pk AC) | US $9,280
TDP3500 | 3.5 GHz | 100 kΩ / ≤0.3 pF | 5X | ±15 V (DC + pk AC) | US $9,890
TDP4000 | 4 GHz | 100 kΩ / ≤0.3 pF | 5X | ±15 V (DC + pk AC) | US $10,200
P6248 | 1.5 GHz | 200 kΩ / <1 pF | 1X / 10X | ±25 V (DC + pk AC) | US $11,400
TDP7704 | 4 GHz | 100 kΩ (SIT) / 150 kΩ (BRW) | ≤0.4 pF | 4X / 10X | ±12 V | US $12,100
TDP7706 | 6 GHz | 100 kΩ (SIT) / 150 kΩ (BRW) | ≤0.4 pF | 4X / 10X | ±12 V | US $13,400
TDP7708 | 8 GHz | 100 kΩ (SIT) / 150 kΩ (BRW) | ≤0.4 pF | 4X / 10X | ±12 V | US $14,700
P7708 | 8 GHz | 100 kΩ (SIT) / 150 kΩ (BRW) / 0.4 pF | 4X / 10X | ±12 V | US $17,100
P7508 | 8 GHz | 100 kΩ | 0.4 pF | 5X / 12.5X | ±15 V (DC + pk AC) | US $18,900
TDP7710 | 10 GHz | 100 kΩ (SIT) / 144 kΩ (BRW) | 0.4 pF | 4X / 10X | ±12 V | US $19,100
P7713 | 13 GHz | 100 kΩ (SIT) / 150 kΩ (BRW) / 0.4 pF | 4X / 10X | ±12 V | US $25,600
P7513A | >13 GHz | 100 kΩ | 0.4 pF | 5X / 12.5X | ±15 V (DC + pk AC) | US $28,600
P7716 | 16 GHz | 100 kΩ (SIT) / 150 kΩ (BRW) / 0.4 pF | 4X / 10X | ±12 V | US $35,500
P7516 | 16 GHz | 100 kΩ (SIT) / 150 kΩ (BRW) / 0.4 pF | 5X / 12.5X | ±15 V (DC + pk AC) | US $38,700
P7720 | 20 GHz | 100 kΩ (SIT) / 150 kΩ (BRW) / 0.4 pF | 4X / 10X | ±12 V | US $42,100
P7625 | 25 GHz | 50 Ω / 225 Ω | coax: 0.25/0.5/1/2/4 ; P76TA: 1.25/2.5/5/10/20 | ±5 V (DC + pk AC) | US $42,100
P7633 | 33 GHz | 50 Ω / 225 Ω | coax: 0.25/0.5/1/2/4 ; P76TA: 1.25/2.5/5/10/20 | ±5 V (DC + pk AC) | US $54,500

Feature summary

• TriMode™ architecture: common‑mode, single‑ended and differential measurements with a single connection.
• Available bandwidth: from 1 MHz (ADA400A) up to 33 GHz (P7633) depending on model.
• Input impedances vary by model: from 50 Ω / 225 Ω (coax) up to 1 MΩ (ADA400A); input capacitances range ≈0.3 pF to ~55 pF.
• Attenuation options: 100x / 10x / 1x / 0.1x, 4x / 10x, 5x / 12.5x and other variants depending on model and adapters.
• Maximum measurable voltages (DC + pk AC): typically ±5 V to ±25 V depending on model.
• Observed list price range for the series: US $3,750 to US $54,500 depending on model and configuration.

Technical characteristics / specifications

• Brand: Tektronix.
• Commercial designation: Low Voltage Differential Probes (low‑voltage differential probes).
• Target applications: characterization of high‑speed differential signals (e.g. serial high‑speed standards, DDR/LPDDR testing, low‑voltage differential signals).
• Variants: passive and active models covering wide bandwidth range (kHz to tens of GHz) with different impedances and attenuation options.
• Compatibility: some models require adapters or external power modules for certain oscilloscopes (compatibility per model).
• Accessories & options: adapters (TPA‑BNC, TCA‑VPI50), TekVPI® external power, FLR probe tips for DDR/LPDDR, P76TA attenuation options for certain coax models.