LTC2344HUH-16 - 16-Bit 4-Ch 400ksps SoftSpan SAR ADC | ADI
N.º de pieza: LTC2344HUH-16 ✓ Activo| Cant. | Precio unitario | Total |
|---|---|---|
| 1 | $28.5 | $28,50 |
| 10 | $25.65 | $256,50 |
| 100 | $22.8 | $2.280,00 |
| 500 | $20.52 | $10.260,00 |
| 1.000 | $18.4 | $18.400,00 |
LTC2344HUH-16 Descripción general
A SAR ADC (Successive Approximation Register analog-to-digital converter) is a type of precision data converter that performs one binary bit decision per clock cycle using an internal capacitive DAC, a comparator, and a successive-approximation register. Within the broader signal-chain hierarchy, the LTC2344-16 belongs to the precision SAR ADC family, which sits between high-speed pipeline ADCs and lower-power delta-sigma ADCs, offering a balance of latency, channel count, and DC accuracy. ADI's SoftSpan™ technology allows per-conversion, per-channel selection of the analog input range, optimizing dynamic range across all four channels.
Key features of the LTC2344HUH-16 include pin-selectable SPI CMOS (1.8 V to 5 V) or LVDS serial interfaces, 1 to 4 lanes of CMOS data output, 102 dB CMRR, ±1.25 LSB INL, no missing codes at 16 bits, 93.4 dB SNR, and an operating temperature range of -40 °C to +125 °C. The wide common-mode input range and high CMRR allow the analog inputs to directly digitize a variety of signals - including those riding on top of large DC bias or AC common-mode voltages - simplifying the front-end signal chain by removing driver amplifiers and level-shifters in many applications.
Architecturally, each channel uses a precision charge-redistribution capacitive DAC combined with an internal low-drift reference and a high-CMRR input front end, enabling simultaneous sampling of all four channels with matched aperture delay. Throughput and bus width are software-configurable: in CMOS mode the user may select 1, 2, or 4 LVDS lanes, while in LVDS mode the converter delivers full 400 ksps/channel throughput to modern FPGAs. The integrated reference buffer preserves low noise and high PSRR even when multiple channels are sampling simultaneously, making the LTC2344HUH-16 well suited for multi-axis data-acquisition systems.
Typical applications include multi-axis motor and motion control, industrial process control, test and measurement instrumentation, seismic and energy-exploration data acquisition, and high-speed medical imaging front ends. The combination of true simultaneous sampling, wide common-mode range, and per-channel span switching makes it especially attractive for multi-phase power-conversion feedback, vibration analysis, and phased-array sensor systems.
When designing with the LTC2344HUH-16, ensure that the analog inputs remain within the datasheet common-mode and differential range for the selected SoftSpan range, and follow ADI's recommended layout for the exposed pad (EP) to maintain thermal performance and low digital crosstalk. Decouple the 5 V AVDD and the digital DVDD rails with low-ESR ceramic capacitors placed as close to the IC as possible.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet, with data verified as of 2026-10-13.
Alternativas directas para LTC2344HUH-16 — mismo encapsulado, compatible pin a pin. Se excluyen las piezas de otro encapsulado que requieren retrabajo de la PCB.
Variantes de esta serie
Modelos de la misma serie compatibles directamente con LTC2344HUH-16 (mismo factor de forma y huella) — difiere en Input Range (SoftSpan), Operating Temperature Range, Number of Channels, Package, Input Type.
Herramienta de comparación rápida — seleccione piezas alternativas para compararlas lado a lado:
LTC2344HUH-18
✅ Sustitución directa ⚠️ Especificaciones sin verificar✓ En stock
$33.6 / unidad
Ver hoja de datos →LTC2344CUH-16
✅ Sustitución directa ⚠️ Especificaciones sin verificar✓ En stock
$18.95 / unidad
Ver hoja de datos →LTC2344CUH-18
✅ Sustitución directa ⚠️ Especificaciones sin verificar✓ En stock
$18.2 / unidad
Ver hoja de datos →LTC2344HUH-16#TRPBF
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
LTC2341HUH-18
✅ Sustitución directa ⚠️ Especificaciones sin verificar✓ En stock
$24.95 / unidad
Ver hoja de datos →LTC2335HLX-16
✅ Sustitución directa ⚠️ Especificaciones sin verificar✓ En stock
$15.4 / unidad
Ver hoja de datos →LTC2344HUH-16 Valores máximos y características eléctricas
| Resolución | 16 bits |
| Number of Channels | 4 (simultaneous sampling) |
| Architecture | SAR (Successive Approximation Register) |
| Sampling Rate per Channel | 400 ksps |
| Input Type | Differential, wide common-mode range (SoftSpan™) |
| Analog Supply Voltage | 5 V |
| Digital Interface | SPI CMOS (1.8 V to 5 V) or LVDS, pin-selectable |
| CMOS Output Lanes | 1, 2, or 4 lanes (configurable) |
| INL (Integral Non-Linearity) | ±1.25 LSB |
| SNR (Signal-to-Noise Ratio) | 93.4 dB |
| CMRR (Common-Mode Rejection Ratio) | 102 dB |
| Missing Codes | No missing codes at 16 bits |
| Rango de temperatura de funcionamiento | -40 °C to +125 °C |
| Encapsulado | 32-pin QFN (5x5 mm) with exposed pad |
| Reference | Internal reference and internal reference buffer |
| Input Range (SoftSpan) | Per-conversion, per-channel software configurable |
Guía de configuración de pines de LTC2344HUH-16 32-pin qfn (5x5 mm) with exposed pad
Configuración de pines para LTC2344HUH-16 (encapsulado 32-pin qfn (5x5 mm) with exposed pad). 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 LTC2344HUH-16.
Consulte la hoja de datos para ver la configuración completa de patillas.
Aplicaciones típicas
LTC2344HUH-16 es adecuado para 6 aplicacións: Multi-Axis Motor Control and Motion Feedback, Test and Measurement Instrumentation, Industrial Process Control and Multi-Channel Data Acquisition, Seismic and Energy-Exploration Data Acquisition, Phased-Array Sensor and Beamforming Front End, Medical Imaging and Patient Monitoring.
Multi-Axis Motor Control and Motion Feedback
The LTC2344HUH-16's four truly simultaneous-sampling 16-bit channels at 400 ksps each make it ideal for multi-axis motion control feedback, where current-sense or resolver-derived signals from three phases plus a DC-bus monitor must be sampled at the exact same instant. The 102 dB CMRR and wide common-mode range allow direct digitisation of phase currents riding on switching node transients, eliminating the need for isolating amplifiers. Per-channel SoftSpan™ switching lets the controller dynamically re-scale the input span between high-current startup transients and low-current steady-state operation, optimising effective dynamic range across the entire torque profile. Place the ADC on a quiet ground island referenced to the analog return of the current shunts, and follow ADI's recommended 5 V AVDD decoupling.
Recomendado
Test and Measurement Instrumentation
The LTC2344HUH-16's 93.4 dB SNR, ±1.25 LSB INL, and 16-bit no-missing-codes performance suit precision bench instruments, modular data-acquisition cards, and portable test equipment. Four simultaneous channels with independent SoftSpan™ ranges allow a single IC to digitize mixed-signal stimuli - a high-level channel at 0-5 V plus a low-level transducer channel at ±10 V - without external programmable-gain amplifiers. The pin-selectable SPI CMOS and LVDS interfaces let designers target either legacy microcontrollers or modern FPGAs with the same hardware, reducing BOM risk across product tiers. ADI's reference layout in the LTC2344-16 datasheet provides a starting point for a four-layer PCB with the exposed pad soldered to a continuous ground pour.
Recomendado
Industrial Process Control and Multi-Channel Data Acquisition
In multi-channel industrial DAQ systems, the LTC2344HUH-16's combination of four simultaneous 16-bit channels, wide common-mode input range, and integrated reference/buffer reduces bill-of-materials cost and PCB area. Each channel's SoftSpan™ range can be independently configured to digitize 4-20 mA loop-derived signals, thermocouple/thermopile outputs, or bridge-pressure sensors, all from the same IC. The 102 dB CMRR rejects 50 Hz/60 Hz line-frequency common-mode noise common in plant environments. ADI's recommended anti-aliasing filter (typically 100 ohm plus 1 nF) per channel, combined with the ADC's wide bandwidth, achieves better than 90 dB SFDR across the full input range.
Recomendado
Seismic and Energy-Exploration Data Acquisition
Seismic and downhole vibration monitoring require true simultaneous sampling of multiple geophone or accelerometer channels with high dynamic range and very low channel-to-channel aperture-delay mismatch. The LTC2344HUH-16's simultaneous-sampling architecture eliminates the inter-channel skew errors that plague multiplexed ADCs, while the 16-bit resolution and 93.4 dB SNR are sufficient for many vibration-analysis and structural-health-monitoring use cases. The exposed-pad 32-QFN package provides a thermally stable platform for outdoor field-instrument enclosures, with operating temperature range extending to +125 °C. The internal reference and internal reference buffer eliminate the need for a precision external reference, simplifying the BOM for portable field systems.
Recomendado
Phased-Array Sensor and Beamforming Front End
Phased-array sonar, ultrasonic, and 5G mmW beamforming front ends require multiple tightly synchronised sample streams with known channel-to-channel delay and gain matching. The LTC2344HUH-16's simultaneous-sampling inputs preserve phase relationships across all four channels, while the pin-selectable LVDS interface can deliver the full 400 ksps/channel throughput directly to a Kintex- or Zynq-class FPGA for digital beamforming. Per-channel SoftSpan™ configuration lets the receiver accommodate varying signal levels across the array, optimising system SNR when beam-formed. The 32-QFN (5x5) package allows dense PCB placement near the RF/IF downconversion stages.
Recomendado
Medical Imaging and Patient Monitoring
In medical imaging and patient-monitoring equipment, the LTC2344HUH-16's combination of 16-bit resolution, simultaneous 4-channel sampling, and 102 dB CMRR supports ECG/EEG multi-lead acquisition, ultrasound pre-beamform sampling, and infusion-pump sensor feedback. The integrated reference and reference buffer minimise long-term drift, important for patient-monitor calibration stability. The industrial -40 °C to +125 °C operating range exceeds the temperature envelope of bedside and portable monitoring equipment. ADI provides IEC 60601-1-related reference designs in the LTC2344-16 datasheet and supporting application notes for medical designers.
Recomendado
Resumen de productos recomendados
Datos de referencia de ingeniería para LTC2344HUH-16 — comparación, orientación de diseño e información de cumplimiento.
Guía de selección
Comparación con alternativas
| Parámetro | Este producto | LTC2344HUH-18 | LTC2344CUH-16 | LTC2344CUH-18 | LTC2344HUH-16#TRPBF | LTC2341HUH-18 |
|---|---|---|---|---|---|---|
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices |
| Package | 32-QFN (5x5) | 32-QFN (5x5) - same | 32-QFN (5x5) - same | 32-QFN (5x5) - same | 32-QFN (5x5) - same | 32-QFN (5x5) - same |
| Resolution | 16 bits | 18 bits | 16 bits | 18 bits | 16 bits | 18 bits |
| Number of Channels | 4 simultaneous | 4 simultaneous | 4 simultaneous | 4 simultaneous | 4 simultaneous | 1 channel |
| Sampling Rate per Channel | 400 ksps | 400 ksps | 400 ksps | 400 ksps | 400 ksps | 500 ksps |
| Operating Temperature | -40C to +125C | -40C to +125C | 0C to +70C | 0C to +70C | -40C to +125C | -40C to +125C |
| Interface | SPI CMOS / LVDS | SPI CMOS / LVDS | SPI CMOS / LVDS | SPI CMOS / LVDS | SPI CMOS / LVDS | SPI CMOS / LVDS |
Diferenciadores clave
- 4-channel true simultaneous sampling with matched aperture delay (frente a LTC2341HUH-18)
- Pin-selectable SPI CMOS and LVDS serial interface (frente a LTC2344CUH-16)
- SoftSpan™ per-conversion, per-channel input-range control (frente a LTC2344CUH-18)
Notas de diseño
The 32-QFN (5x5) package's exposed pad is the primary thermal and ground return path. Solder the EP to a continuous ground pour of at least 10 mm x 10 mm on the top layer with multiple thermal vias to the inner ground plane, per the ADI LTC2344-16 datasheet reference layout. Star-route the analog 5 V AVDD and digital DVDD supplies separately back to a ferrite bead or linear regulator to prevent digital switching noise from corrupting the analog input stage.
Decouple the 5 V AVDD pin with a 10 uF X7R ceramic in parallel with a 0.1 uF X7R placed within 2 mm of the pin; the same applies to the DVDD and OVDD pins. According to the ADI LTC2344-16 datasheet, the internal reference buffer draws pulsed current during conversion - insufficient decoupling manifests as SNR and INL degradation at high sampling rates. A ferrite bead between AVDD and the upstream 5 V rail is recommended when the analog supply also feeds noisy digital loads.
Do not assume the four input channels are independent signal chains with respect to the SoftSpan™ configuration - the per-conversion range switching requires software coordination and may introduce channel-to-channel settling transients if switched mid-acquisition. According to the ADI LTC2344-16 datasheet, ensure the analog inputs remain within the absolute-maximum common-mode and differential ratings, and avoid driving the inputs beyond ±10 V even when SoftSpan™ ranges below that are selected. Use a small RC anti-aliasing filter (typically 100 ohm and 1 nF) on each analog input to limit wideband noise.
Información de cumplimiento
RoHS and lead-free per ADI product page (#PBF suffix indicates lead-free compliance). The LTC2344-16 family is not AEC-Q100 qualified; the H-grade (-40 C to +125 C) refers to industrial temperature grade, not automotive qualification.