Analogic DBS902HV 14-Bit Waveform Digitizer Module

The Analogic DBS902HV is a 14-bit waveform digitizer module engineered for high-speed signal acquisition in VXI-based instrumentation systems. This daughterboard plugs into the Analogic DBS9900 VXI C-size Dual Instrument Carrier, enabling multiple modules to share a single chassis slot while maintaining coherent operation across the DBS9XX series for integrated signal analysis.

The module delivers one differential input channel with 14-bit resolution and sampling rates to 80 MS/s across a 40 MHz bandwidth. Six selectable input ranges span ±0.5 V through ±25 V, accommodating both low-level and high-voltage signals. Input impedance options include 50 Ω, 75 Ω, and 1 MΩ configurations. Overvoltage protection extends to ±30 VDC on high ranges and ±3 VDC on low ranges.

Dynamic performance is defined by spurious-free dynamic range (SFDR) exceeding 75 dB typical at 10 MHz input with 80 MS/s sampling, and noise floor of 200 µV RMS maximum with 30 MHz bandwidth at 50 Ω. Integral non-linearity remains within ±3 LSB typical, with DC gain accuracy of ±1% over ±5 °C intervals. Common-mode rejection reaches >60 dB from DC to 20 kHz at ±0.5 V, while channel-to-channel crosstalk rejection exceeds 100 dB.

– Technical Specifications

• Resolution: 14-bit
• Sampling Rate: Up to 80 MS/s
• Channels: One differential
• Bandwidth: 40 MHz
• Input Ranges: ±0.5 V, ±1.0 V, ±2.5 V, ±5.0 V, ±10 V, ±25 V
• Input Impedance: 50 Ω, 75 Ω, or 1 MΩ
• SFDR: >75 dB typ. (10 MHz input, 80 MS/s); >63 dB typ. (80 MS/s, 40 MHz bandwidth)
• Noise: 200 µV RMS max. (30 MHz bandwidth @ 50 Ω)
• Common-Mode Rejection: >60 dB (DC to 20 kHz @ ±0.5 V)
• Integral Non-Linearity: ±3 LSB typ.
• DC Gain Accuracy: ±1% (within ±5 °C)
• Overvoltage Protection: ±30 VDC (high ranges), ±3 VDC (low ranges)

– Key Features

• Software-selectable lowpass filter: None, 20 MHz, or 40 MHz
• Programmable trigger thresholds with pre-trigger, post-trigger, and arbitrary positioning
• Internal and external clock/trigger sources via front panel and VXI TTLTRG lines
• Front panel digital input for real-time sample tagging
• Programmable sample counter for data point control

– Compatibility & Integration

Designed for the Analogic DBS9900 VXI C-size Dual Instrument Carrier. Supports coherent operation with other Analogic DBS9XX series modules for multi-function signal acquisition and analysis.