Basic Specifications and Positioning

• Product Category: 14-bit high-speed pipelined ADC (Analog-to-Digital Converter), a high-performance mixed-signal device
• Brand: ADI (Analog Devices), formerly Linear Technology-a global leader in high-performance analog and power management solutions
• Core Electrical Parameters:
  • Resolution: 14-bit (no missing codes, DNL ±0.5LSB, INL ±2LSB typical)
  • Sampling Rate: Up to 125MSps (Mega Samples per Second), meeting mid-to-high frequency signal sampling needs
  • Input Characteristics: Differential analog input, input voltage range ±0.5Vpp~±2Vpp (configurable via external resistors), input bandwidth ≥700MHz, supporting wideband signal sampling
  • Output Interface: LVDS (Low-Voltage Differential Signaling) parallel output, compatible with CMOS logic levels, supporting data interleaving mode to reduce transmission noise
  • Reference Voltage: Built-in 2.5V high-precision reference (temperature coefficient ±10ppm/℃); external reference (2.0V~3.0V) also supported for flexible precision adaptation
• Operating Conditions:
  • Supply Voltage: Dual-supply operation (1.8V for analog section, 1.8V/3.3V compatible for digital section); external voltage division required for single-supply mode
  • Operating Temperature Range: Industrial grade (-40℃~85℃), adapting to harsh environment applications
  • Power Consumption: 195mW typical (125MSps sampling rate, dual 1.8V supply), standby power consumption <1mW, featuring significant low-power characteristics
• Package Type: 48-lead QFN (Quad Flat No-Lead) package (7mm×7mm), lead-free design, surface-mount, suitable for high-density PCB layouts
• Product Status: Active (in mass production) with a stable supply chain. As a classic model in ADI's high-speed ADC series, it is widely used in communication and test & measurement fields
• Core Advantages: Balances 14-bit high precision and 125MSps high-speed sampling; wide input bandwidth adapts to multi-frequency signals; LVDS output offers strong anti-interference; low power consumption and industrial-grade temperature range suit multiple scenarios

Detailed Core Resources

1. Architecture and Integration Design

• Core Architecture: Adopts pipelined ADC topology, combined with high-speed comparators and digital error correction logic, balancing sampling rate and linearity. No missing codes guarantee full-range sampling accuracy
• Integrated Functions: Single-chip integration of 14-bit ADC core, differential input buffer amplifier, built-in reference voltage source, LVDS output driver, and SPI configuration circuit. Only external clock, decoupling capacitors, and a few configuration resistors are required to form a complete sampling solution, simplifying hardware design
• Clock and Trigger: Supports differential/single-ended sampling clock input; Duty Cycle Stabilizer (DCS) ensures sampling precision over a wide duty cycle range; supports external trigger and continuous sampling mode switching
• Configuration Interface: 3-wire SPI serial interface for configuring input range, reference mode, output format, and other parameters; supports register power-down retention, eliminating the need for reconfiguration

2. Electrical Performance and Precision

• Precision Indicators (typical values, fS=125MSps, VREF=2.5V, TA=25℃):
  • Differential Nonlinearity (DNL): ±0.3LSB, no missing codes, ensuring uniform sampling steps
  • Integral Nonlinearity (INL): ±1.5LSB, guaranteeing linear restoration of sampled signals
  • Signal-to-Noise Ratio (SNR): 74dB (1kHz input signal, at Nyquist frequency); Spurious-Free Dynamic Range (SFDR): 90dBc, low-noise characteristics adapt to weak signal sampling
  • Total Harmonic Distortion (THD): -80dBc, minimal harmonic interference, high signal restoration
• Dynamic Performance:
  • Input Bandwidth: ≥700MHz, supporting direct sampling of Radio Frequency (RF) and Intermediate Frequency (IF) signals without additional down-conversion circuits
  • Sample-and-Hold Time: 6ns, ensuring signal hold stability during high-speed sampling
  • Clock Jitter Tolerance: <50fs (femtoseconds), reducing the impact of clock noise on sampling precision
• Reference Characteristics: Built-in reference output noise ≤50μVrms (1kHz bandwidth); external reference input impedance is high (10kΩ), minimizing impact on external circuit loads

3. Power Consumption and Reliability Characteristics

• Power Consumption Optimization Design (typical values):
  • Active Power Consumption: 195mW (125MSps, dual 1.8V supply), 210mW (125MSps, analog 1.8V + digital 3.3V)
  • Standby Power Consumption: <1mW, significantly reducing energy consumption in idle state
  • Adaptive Power Adjustment with Sampling Rate: When sampling rate drops to 62.5MSps, power consumption can be as low as 110mW, adapting to different rate requirements
• Reliability Assurance:
  • ESD Protection Level: ±2kV (HBM), ±200V (MM), compliant with IEC 61000-4-2 standard, enhancing anti-static interference capability
  • Long-Term Stability: Reference voltage annual drift <50ppm, ensuring long-term operational precision of equipment
  • Pin Protection: Analog input pins feature overvoltage protection (±5V) to prevent chip damage from misoperation
• Compliance: Compliant with RoHS 2.0 and REACH environmental standards, meeting global market compliance requirements

4. Function Configuration and Flexible Adaptation

• Input Configuration: Supports single-ended to differential input (requires external resistor network); differential input mode offers strong common-mode interference rejection, adapting to high-noise industrial field environments
• Output Configuration: LVDS output supports 1.8V/3.3V logic levels; data format selectable between two's complement or offset binary; supports data alignment and delay adjustment
• Calibration Function: Supports self-calibration and system calibration, triggered via SPI commands, automatically compensating for gain and offset errors to improve system precision
• Power Supply Rejection Ratio (PSRR): 60dB (1kHz) for analog section, 50dB (1kHz) for digital section, strong suppression capability against power supply noise, reducing the impact of power fluctuations

Key Features and Advantages

1. High Speed and Precision for Wideband Signals

• 125MSps sampling rate combined with 700MHz input bandwidth enables direct sampling of Intermediate Frequency (IF) and Radio Frequency (RF) signals, eliminating the need for down-conversion circuits in traditional solutions and simplifying system architecture
• 14-bit resolution + 74dB SNR + 90dBc SFDR delivers excellent sampling precision, accurately restoring weak signals and complex waveforms, meeting high-precision requirements of test & measurement and communication reception scenarios

2. Low Power Consumption and Flexible Power Supply for Multi-System Adaptation

• Dual-supply/single-supply compatible design; 195mW low power consumption (125MSps) is 20% lower than comparable ADCs, extending battery life of battery-powered devices
• Adaptive power adjustment with sampling rate, flexibly configurable between 5MSps~125MSps according to actual needs, balancing performance and energy consumption

3. High Integration and Ease of Use for Simplified Design

• Built-in high-precision reference, input buffer, and LVDS output driver reduce the number of external components, lowering BOM costs and PCB space
• SPI configuration interface supports register-level customization; LVDS differential output offers strong anti-interference and long transmission distance, adapting to high-speed signal transmission scenarios

4. Industrial-Grade Reliability and Environmental Adaptability

• -40℃~85℃ industrial-grade wide temperature range tolerates extreme high and low temperature environments, adapting to harsh scenarios such as industrial control and automotive communication (non-safety-related)
• Enhanced ESD protection and overvoltage protection provide strong Electromagnetic Interference (EMI) resistance, reducing failure risks in harsh environments

Typical Application Scenarios

• Communication Systems: 5G small base stations, radio frequency receivers, Software Defined Radio (SDR), satellite communication equipment, supporting direct intermediate frequency signal sampling
• Instrumentation: Digital oscilloscopes, spectrum analyzers, signal generators, high-speed data recorders, meeting wideband high-precision measurement needs
• Data Acquisition Systems (DAQ): Industrial automation data acquisition, seismic monitoring equipment, ultrasonic testing systems, adapting to high-speed multi-channel sampling
• Medical Devices: Ultrasound imagers, portable diagnostic equipment, low-power and high-precision characteristics meet medical scenario requirements
• Aerospace and Defense: Radar signal processing, electronic countermeasure equipment, wide temperature range and high reliability adapt to extreme environments