HMCAD5831LP9BE - 26 GS/s 3-Bit ADC w/DEMUX | Analog Devices
N.º de pieza: HMCAD5831LP9BE ✓ Activo| Cant. | Precio unitario | Total |
|---|---|---|
| 1 | $185 | $185,00 |
| 10 | $172.5 | $1.725,00 |
| 100 | $158 | $15.800,00 |
| 500 | $144 | $72.000,00 |
| 1.000 | $132 | $132.000,00 |
HMCAD5831LP9BE Descripción general
A flash ADC is the highest-speed ADC architecture, in which 2^N parallel comparators simultaneously quantize the input against a resistor ladder reference. The 3-bit flash core delivers one quantization step every clock cycle, with no pipeline latency - critical for time-interleaved measurement systems, pulse-mode radar receivers, and single-shot transient capture. The HMCAD5831 belongs to the wider analog-to-digital converter family, which sits hierarchically under data converters -> mixed-signal ICs -> semiconductors.
Key features of the HMCAD5831LP9BE include a wide analog input bandwidth suitable for direct RF sampling, an external reference ladder whose top and bottom voltages are set by the user to customize input common-mode and swing levels, and a Data Inhibit function that forces ADC outputs to zero for test and synchronization. The device operates from -5V and -3.3V supplies, accepts a single-ended AC- or DC-coupled RF input, and demultiplexes its 1:2 output stream at half the sample clock rate.
Architecturally, the part uses a fully-parallel comparator array with internal Gray/binary decoding. User-programmable reference ladder voltages allow direct interface to AC-coupled RF front ends or DC-coupled baseband signals without a separate driver amplifier. The half-rate clock output simplifies synchronization with downstream FPGAs or serializer ASICs.
Typical applications include wideband radar pulse digitization, digital oscilloscope acquisition front-ends, direct RF sampling in software-defined radio receivers, and high-energy physics instrumentation. It also suits time-domain reflectometry (TDR) and any system requiring a 3-bit flash quantizer with demuxed LVDS-like outputs.
When designing with this part, carefully control the reference ladder top/bottom voltages to set the input common mode and full-scale swing for your signal chain. Maintain clean -5V and -3.3V supplies with low-inductance decoupling because the 26 GSPS comparator array draws large transient currents at each clock edge.
Alternativas directas para HMCAD5831LP9BE — mismo encapsulado, compatible pin a pin. Se excluyen las piezas de otro encapsulado que requieren retrabajo de la PCB.
Herramienta de comparación rápida — seleccione piezas alternativas para compararlas lado a lado:
HMCAD5831
✅ Sustitución directa ⚠️ Especificaciones sin verificar📋 Alternativa de referencia (no en el catálogo)
HMCAD5831-26G
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HMCAD5831LP9BE Valores máximos y características eléctricas
| Resolución | 3 bits (plus over/under range) |
| Number of Channels | 1 input |
| Sampling Rate (Max) | 26 GSPS |
| Architecture | Flash |
| Analog Input | Single-ended RF, AC or DC coupled |
| Reference Ladder | External top/bottom voltages user-programmable |
| Output Interface | 1:2 demultiplexed, binary-weighted |
| Output Bits (MSB) | X2, Y2 |
| Clock Output | Half-rate clock |
| Data Inhibit Function | Yes (forces ADC outputs to 0) |
| Negative Supply (VEE) | -5 V |
| Negative Logic Supply (VCC) | -3.3 V |
| Package Type | 64-SMT (9 × 9 mm) |
| Tipo de montaje | Surface Mount |
| RoHS | Compliant |
Guía de configuración de pines de HMCAD5831LP9BE 64-smt (9 × 9 mm)
Configuración de pines para HMCAD5831LP9BE (encapsulado 64-smt (9 × 9 mm)). Este componente analógico presenta pines de entrada, salida y alimentación. Consulte la hoja de datos del fabricante para conocer las configuraciones de los pines de ajuste de offset, compensación y habilitación. Ideal para circuitos de acondicionamiento de señal y amplificadores.
No hay datos detallados de patillaje disponibles para HMCAD5831LP9BE.
Consulte la hoja de datos para ver la configuración completa de patillas.
Aplicaciones típicas
HMCAD5831LP9BE es adecuado para 6 aplicacións: Wideband Radar Pulse Digitization, Digital Oscilloscope Acquisition Front-End, Software-Defined Radio Direct RF Sampling, Time-Domain Reflectometry (TDR), High-Energy Physics Instrumentation, Pulse Mode Radar Receivers.
Wideband Radar Pulse Digitization
The HMCAD5831LP9BE is well suited to wideband radar pulse digitization because of its 26 GSPS sample rate and zero-latency 3-bit flash architecture. With an analog input bandwidth that supports direct RF sampling, the device can capture sub-nanosecond pulse transitions without an external sample-and-hold, eliminating a major source of distortion. The user-programmable reference ladder lets the receiver engineer match the input common-mode and full-scale swing directly to the radar front-end, removing the need for an intermediate driver amplifier. The 1:2 demultiplexed output at half the sample clock rate simplifies FPGA capture, allowing a cost-effective mid-range FPGA to ingest the data stream without an external serializer. HMCAD1050-80 from the XAIPART catalog pairs well as a downstream digitizer in cascaded radar receivers.
Recomendado
Digital Oscilloscope Acquisition Front-End
In a digital storage oscilloscope, the HMCAD5831LP9BE serves as the first-stage acquisition front-end where its 26 GSPS flash conversion captures single-shot transient events. Unlike a pipelined ADC, the 3-bit flash core provides zero pipeline delay, so the trigger timing relationship between input event and stored waveform is exact - critical for high-bandwidth oscilloscope measurements. The binary-weighted outputs with X2 and Y2 as MSBs simplify decoding in the FPGA capture memory, while the half-rate clock output halves the FPGA I/O rate. The 9x9 mm SMT module can be placed directly behind the front-end attenuator network, minimizing stub length and preserving the 26 GHz-class analog bandwidth. AD9629XCPZ-40 pairs naturally as a follow-on higher-resolution ADC.
Recomendado
Software-Defined Radio Direct RF Sampling
Direct RF sampling in a software-defined radio receiver benefits from the HMCAD5831LP9BE's wide analog bandwidth and 26 GSPS Nyquist-rate sampling. The user-programmable reference ladder lets the SDR front-end adapt the ADC's full-scale swing to the LNA output without an AGC loop, simplifying the receiver chain. Although only 3 bits of resolution, the flash converter provides the instantaneous dynamic range needed for signal-presence detection and rough power measurement before the signal is down-converted to a narrower-band, higher-resolution ADC. The Data Inhibit function aids TDD synchronization, blanking the ADC output during TX/RX switching. ADS5400-family parts serve in lower-bandwidth, higher-resolution SDR stages.
Recomendado
Time-Domain Reflectometry (TDR)
Time-domain reflectometry requires digitizing fast step or pulse responses reflected from a transmission line under test. The HMCAD5831LP9BE's 26 GSPS sampling provides approximately 38.5 ps timing resolution, which is sufficient to locate impedance discontinuities within millimeters on a typical FR-4 PCB. The single-cycle latency of the flash architecture preserves the absolute timing of the reflected edge, which is essential when measuring the small difference between incident and reflected pulses. The single-ended RF input accepts the TDR step directly, AC- or DC-coupled, while the 1:2 demultiplexed output streams into a small FPGA that computes the impedance profile in real time. ADS5474 from a niche companion site serves in lower-cost TDR designs.
Recomendado
High-Energy Physics Instrumentation
High-energy physics experiments often require digitizing sub-nanosecond detector pulses with exact timing fidelity. The HMCAD5831LP9BE provides the necessary single-shot 26 GSPS capture with zero pipeline delay, ensuring the recorded timestamp of each event corresponds to the actual physics interaction. The Data Inhibit function can be used to gate the ADC during the detector's busy recovery period, preventing pile-up artifacts from contaminating the next event. The 64-pin SMT module is small enough to mount on the detector frontend PCB, close to the photomultiplier or silicon strip output. HMCAD1050-80 from the XAIPART catalog is often paired as a parallel high-resolution channel.
Recomendado
Pulse Mode Radar Receivers
Pulse-mode radar receivers rely on capturing the full envelope of each transmitted pulse return. The HMCAD5831LP9BE's 3-bit flash architecture samples at 26 GSPS, allowing direct digitization of X-band pulse returns without an intermediate IF stage. The 1:2 demultiplexed output with half-rate clock output simplifies data routing to a downstream FPGA, where the pulse envelope is extracted and matched-filtered digitally. The user-programmable reference ladder top and bottom voltages let the radar designer tune the full-scale swing to the LNA output, maximizing dynamic range for the chosen target environment. AD9268XCPZ-125 is a typical companion high-resolution baseband digitizer in dual-channel radar receivers.
Recomendado
Resumen de productos recomendados
Datos de referencia de ingeniería para HMCAD5831LP9BE — comparación, orientación de diseño e información de cumplimiento.
Guía de selección
Comparación con alternativas
| Parámetro | Este producto | HMCAD5831 | HMCAD5831-26G |
|---|---|---|---|
| Brand | Analog Devices | Analog Devices | Analog Devices |
| Package | 64-SMT (9x9 mm) | 64-SMT (9x9 mm) - same | 64-SMT (9x9 mm) - same |
| Resolution | 3 bit + OOR | 3 bit + OOR | 3 bit + OOR |
| Sample Rate | 26 GSPS | 26 GSPS | 26 GSPS |
| Architecture | Flash | Flash | Flash |
| Output Interface | 1:2 demux, binary | 1:2 demux, binary | 1:2 demux, binary |
| Supply Voltages | -5V / -3.3V | -5V / -3.3V | -5V / -3.3V |
| RoHS | Compliant | Compliant | Compliant |
Diferenciadores clave
- Highest sample rate in a 3-bit flash ADC (frente a EV10AS150A)
- Zero pipeline latency (frente a ADS5400)
- User-programmable reference ladder (frente a AD9629XCPZ-40)
Notas de diseño
Estimated: at 26 GSPS the HMCAD5831LP9BE's comparator array draws large transient currents on every clock edge, so the -5V (VEE) and -3.3V (VCC) rails must be decoupled with multiple low-inductance ceramic capacitors placed within 2 mm of the supply pins. Use a pi-network of 10uF + 0.1uF + 0.01uF on each rail to suppress switching-edge ringing. Source impedance above a few hundred milliohms will degrade sampling aperture and increase ENOB.
Place the analog RF input trace as a 50 ohm controlled-impedance line from the front-end attenuator directly to the ADC input pin, keeping the trace shorter than lambda/20 at the highest input frequency of interest. The exposed paddle must be soldered to a continuous ground plane on the top layer with multiple thermal vias to inner ground layers to provide both the ground return and the thermal path for the 26 GSPS comparator array.
Do not assume the reference ladder voltages are internally biased; the HMCAD5831LP9BE requires the user to drive the top and bottom of the ladder externally. Failure to set both rails will leave the comparator thresholds undefined and the output code will be invalid. The Data Inhibit pin must be tied high (inactive) or low (active) according to the system requirement - leaving it floating can cause intermittent output corruption.
Información de cumplimiento
RoHS compliance per Analog Devices product page. REACH, halogen-free, and conflict-mineral status not explicitly stated in the verified web data - confirmed [DATA_NEEDED] for these fields.
