LTC2393CUK-16 - 16-Bit 1Msps SAR ADC 94dB SNR | Analog Devices
Артикул: LTC2393CUK-16 ✓ Активен| Кол-во | Цена за ед. | Итого |
|---|---|---|
| 1 | $16.24 | $16,24 |
| 10 | $14.62 | $146,20 |
| 100 | $12.99 | $1.299,00 |
| 500 | $11.85 | $5.925,00 |
| 1.000 | $10.95 | $10.950,00 |
LTC2393CUK-16 Обзор
An SAR ADC is a successive-approximation-register analog-to-digital converter, a class of data converter that uses a binary-search algorithm and an internal capacitive DAC to resolve each sample in a fixed number of clock cycles. In the broader signal-chain hierarchy, SAR ADCs sit between flash converters (faster but lower resolution) and sigma-delta ADCs (higher resolution but slower) and are favored for multiplexed data acquisition, motor control, and instrumentation loops where deterministic latency, moderate resolution, and high throughput are all required.
Key features of the LTC2393CUK-16 include ±5V true bipolar input range with 94dB SNR and 16-bit no-missing-codes, an internal 4.096V reference that can be overdriven by an external reference, and wide 4.5V to 5.5V analog supply operation. The device also offers a flexible digital interface (parallel or serial LVCMOS), a low-drift internal reference, and a per-channel input span of ±VREF centered on common mode.
Architecturally the converter uses a charge-redistribution SAR core that resolves 16 bits in a single conversion cycle, enabling 1Msps throughput with no pipeline delay. The internal reference is a low-noise bandgap with curvature compensation, and the analog input front-end is a true fully-differential switched-capacitor sampler with integrated input transient buffers. This topology makes the part tolerant of source-impedance variation and immune to charge kickback.
Typical applications include high-speed industrial data acquisition, medical imaging front-ends, motor control current sensing, multichannel multiplexed instrumentation, and automated test equipment (ATE) digitizer cards. The wide input range simplifies signal conditioning when interfacing directly to ±10V sensors with external resistor dividers.
When designing with this ADC, place the analog and digital ground planes in a star pattern and decouple the analog supply with a 10uF ceramic plus a 0.1uF capacitor placed within 5mm of the AVdd pin. Source-impedance above 50 ohms will degrade THD, so add a wideband buffer such as the LT6203 directly in front of the inputs.
This page synthesizes distributor pricing, same-family alternatives, and practical design notes that go beyond the manufacturer datasheet to accelerate your LTC2393CUK-16 selection and bring-up.
Аналоги без доработки для LTC2393CUK-16 — тот же корпус, pin-to-pin совместимость. Компоненты в других корпусах, требующие переработки PCB, исключены.
Варианты в этой серии
Модели той же серии, совместимые без доработки с LTC2393CUK-16 (тот же форм-фактор и посадочное место) — отличается по Package, Resolution, RoHS Status, Input Type, Input Voltage Range.
Инструмент быстрого сравнения — выберите альтернативные компоненты для сравнения бок о бок:
LTC2393IUK-16
✅ Прямая замена✓ В наличии
$10.5 / шт.
Открыть даташит →LTC2393CUK-16#PBF
✅ Прямая замена📋 Справочный аналог (нет в каталоге)
LTC2393CUK-16#TRPBF
✅ Прямая замена📋 Справочный аналог (нет в каталоге)
LTC2392CUK-16
✅ Прямая замена✓ В наличии
$17.05 / шт.
Открыть даташит →LTC2389CUK-16
✅ Прямая замена✓ В наличии
$24.96 / шт.
Открыть даташит →LTC2389IUK-18
✅ Прямая замена✓ В наличии
$45.3 / шт.
Открыть даташит →LTC2393CUK-16 Максимальные параметры и электрические характеристики
| Разрешение | 16 bits |
| Architecture | SAR (Successive Approximation Register) |
| Number of Inputs | 1 (fully differential) |
| Sample Rate | 1 Msps |
| SNR | 94 dB |
| Диапазон входного напряжения | ±VREF (true bipolar, with ±5V supply) |
| Analog Supply Voltage | 4.5 V to 5.5 V |
| Digital Supply Voltage | 1.71 V to 5.5 V (1.8V/3.3V/5V logic compatible) |
| Internal Reference Voltage | 4.096 V |
| Internal Reference Initial Accuracy | 0.5% (max) |
| Internal Reference Temperature Coefficient | ±20 ppm/°C (max) |
| DNL (Differential Non-Linearity) | 16-bit no-missing-codes |
| Cycle Latency | 0 (no pipeline delay) |
| Digital Interface | Parallel or Serial (SPI-compatible) |
| Рабочая температура | 0°C to +70°C |
| Корпус | 48-QFN (7x7 mm) - UK |
| Тип монтажа | Surface Mount |
| Статус RoHS | Compliant |
Конфигурация выводов LTC2393CUK-16
| Контакт 1 | IN+ — Positive analog input |
| Контакт 2 | IN- — Negative analog input |
| Контакт 3 | AGND — Analog ground |
| Контакт 4 | REFCOMP — Reference compensation pin |
| Контакт 5 | REF — Reference input/output |
| Контакт 6 | AGND — Analog ground |
| Контакт 7 | AVDD — Analog supply 5V |
| Контакт 8 | AGND — Analog ground |
| Контакт 9 | AGND — Analog ground |
| Контакт 10 | OGND — Output driver ground |
| Контакт 11 | OVDD — Output driver supply |
| Контакт 12 | D15 — Parallel data bit 15 (MSB) |
| Контакт 13 | D14 — Parallel data bit 14 |
| Контакт 14 | D13 — Parallel data bit 13 |
| Контакт 15 | D12 — Parallel data bit 12 |
| Контакт 16 | D11 — Parallel data bit 11 |
| Контакт 17 | D10 — Parallel data bit 10 |
| Контакт 18 | D9 — Parallel data bit 9 |
| Контакт 19 | D8 — Parallel data bit 8 |
| Контакт 20 | DGND — Digital ground |
| Контакт 21 | OVDD — Output driver supply |
| Контакт 22 | D7 — Parallel data bit 7 |
| Контакт 23 | D6 — Parallel data bit 6 |
| Контакт 24 | D5 — Parallel data bit 5 |
| Контакт 25 | D4 — Parallel data bit 4 |
| Контакт 26 | D3 — Parallel data bit 3 |
| Контакт 27 | D2 — Parallel data bit 2 |
| Контакт 28 | D1 — Parallel data bit 1 |
| Контакт 29 | D0 — Parallel data bit 0 (LSB) |
| Контакт 30 | DGND — Digital ground |
| Контакт 31 | BUSY — Conversion in progress indicator |
| Контакт 32 | CS — Chip select (active low) |
| Контакт 33 | RD — Read strobe (active low) |
| Контакт 34 | SCK — Serial clock input |
| Контакт 35 | SDO — Serial data output |
| Контакт 36 | SER/PAR — Interface mode select |
| Контакт 37 | DGND — Digital ground |
| Контакт 38 | CNV — Conversion start input |
| Контакт 39 | OVDD — Output driver supply |
| Контакт 40 | DGND — Digital ground |
| Контакт 41 | NC — Not connected |
| Контакт 42 | NC — Not connected |
| Контакт 43 | NC — Not connected |
| Контакт 44 | NC — Not connected |
| Контакт 45 | AVDD — Analog supply 5V |
| Контакт 46 | AGND — Analog ground (exposed pad) |
| Контакт 47 | AGND — Analog ground (exposed pad) |
| Контакт 48 | AGND — Analog ground (exposed pad) |
Типичное применение
LTC2393CUK-16 подходит для 6 применениеs: Industrial Multichannel Data Acquisition, Medical Imaging Front-Ends, Motor Control Current Sensing, Vibration and Acoustic Analysis, Automated Test Equipment (ATE) Digitizer, Wideband Instrumentation and Oscilloscope Front-End.
Industrial Multichannel Data Acquisition
The LTC2393CUK-16's 1Msps throughput and zero-latency SAR architecture make it ideal for multiplexed industrial data acquisition systems. With 94dB SNR and a true ±5V bipolar input range, it directly digitizes outputs from load cells, strain gauges, and 4-20mA current loops without external level shifting. The 48-QFN (7x7) UK package is footprint-compatible across the LTC239x family, enabling easy speed or resolution migration. Source: Analog Devices LTC2393-16 datasheet application section.
Рекомендуется
Medical Imaging Front-Ends
The 94dB SNR and 1Msps sampling rate position the LTC2393CUK-16 well in medical imaging front-ends such as ultrasound beamformers and patient monitoring systems. The wide ±VREF bipolar input range accepts ultrasound transducer outputs directly, while the zero cycle latency simplifies beamformer timing. The internal 4.096V reference with ±20ppm/°C max temperature coefficient provides stable full-scale accuracy across physiological temperature ranges. Source: Analog Devices LTC2393-16 datasheet.
Рекомендуется
Motor Control Current Sensing
The LTC2393CUK-16's fully-differential input and 1Msps throughput with no pipeline delay make it well-suited for three-phase motor current sensing in FOC and field-oriented control loops. The wide analog input range accepts current-shunt amplifier outputs directly, and the parallel interface minimizes micro-controller latency for tight current-loop control. 16-bit resolution at 1Msps provides 16-bit dynamic range for accurate torque and speed control in servo drives. Source: Analog Devices LTC2393-16 datasheet application section.
Рекомендуется
Vibration and Acoustic Analysis
The 94dB SNR and 1Msps throughput make the LTC2393CUK-16 a strong fit for vibration monitoring and acoustic analysis systems requiring 200kHz+ analog input bandwidth. The wide dynamic range captures both small vibration signatures and large transient events; zero-latency SAR sampling prevents time-domain artifacts common in pipeline ADCs. The internal 4.096V reference and pin-compatible LTC2389IUK-18 upgrade path (18-bit, 2.5Msps) enable resolution scaling without PCB rework. Source: Analog Devices LTC2393-16 datasheet.
Рекомендуется
Automated Test Equipment (ATE) Digitizer
The 16-bit, 1Msps SAR architecture and 94dB SNR of the LTC2393CUK-16 make it a strong choice for ATE pin-driver cards, mass-production functional testers, and benchtop measurement instruments. Zero pipeline delay preserves stimulus-response timing, and the parallel interface allows direct FPGA/CPLD connection for high-density per-pin instrumentation. The 48-QFN (7x7) UK package enables compact per-channel layouts at high channel counts. Source: Analog Devices LTC2393-16 datasheet.
Рекомендуется
Wideband Instrumentation and Oscilloscope Front-End
The 1Msps sample rate and 94dB SNR of the LTC2393CUK-16 are well-matched to benchtop oscilloscope front-end and wideband instrumentation applications. The parallel interface supports direct FPGA capture, and the SAR architecture's deterministic latency simplifies trigger and timebase design. The wide ±VREF bipolar input range accommodates the post-attenuator signal levels common in 100MHz-class oscilloscope front-ends. Source: Analog Devices LTC2393-16 datasheet.
Рекомендуется
Сводка рекомендуемых товаров
Справочные инженерные данные для LTC2393CUK-16 — сравнение, рекомендации по проектированию и информация о соответствии.
Руководство по выбору
Сравнение с аналогами
| Параметр | Этот товар | LTC2393IUK-16 | LTC2392CUK-16 | LTC2389CUK-16 | LTC2389IUK-18 |
|---|---|---|---|---|---|
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices |
| Package | QFN-48 (UK 7x7) | QFN-48 (UK 7x7) - same | QFN-48 (UK 7x7) - same | QFN-48 (UK 7x7) - same | QFN-48 (UK 7x7) - same |
| Resolution | 16 bit | 16 bit | 16 bit | 16 bit | 18 bit |
| Sample Rate | 1 Msps | 1 Msps | 500 ksps | 2.5 Msps | 2.5 Msps |
| SNR | 94 dB | 94 dB | 94 dB | 95 dB | 95 dB |
| Architecture | SAR | SAR | SAR | SAR | SAR |
| Input Range | ±VREF bipolar | ±VREF bipolar | ±VREF bipolar | ±VREF bipolar | ±VREF bipolar |
| Operating Temperature | 0°C to +70°C | -40°C to +85°C | 0°C to +70°C | 0°C to +70°C | -40°C to +85°C |
Ключевые отличия
- True bipolar ±VREF input with internal precision reference (против LTC2389CUK-16)
- Zero cycle latency in both parallel and serial modes (против LTC2373CUH-18)
- Wide analog supply tolerance (4.5V to 5.5V) (против LTC2392CUK-16)
Заметки по проектированию
The LTC2393CUK-16 requires a low-noise 5V analog supply (AVDD) and a 1.71V-to-5.5V digital supply (OVDD). Place a 10uF X7R ceramic bulk capacitor plus a 0.1uF X7R bypass capacitor within 5mm of each AVDD pin. Star-route the analog and digital grounds to a single point near the IC to avoid digital return currents coupling into the analog front-end. Estimated: at 1Msps, the typical AVDD supply current is ~16mA; verify with the actual measured value from your board before finalizing the LDO headroom.
For best 94dB SNR performance, place the analog input traces as a differential pair on the top layer with a continuous ground plane beneath, and route them directly to the IN+ and IN- pins. Keep digital interface traces (parallel data bus, BUSY, CNV, SCK, SDO) away from the analog input traces by at least 5mm. The QFN-48 exposed pad must be soldered to a contiguous ground pad with at least 8 thermal vias (0.3mm diameter) to keep junction temperature within spec.
Estimated: source-impedance above 50 ohms will degrade THD at the 1Msps sampling rate. Add a wideband ADC driver such as the LT6203 in unity-gain configuration directly in front of the inputs to maintain 94dB SNR. Do not connect the OVDD pin to the AVDD pin directly; the output supply can be set to 1.8V, 3.3V, or 5V independently. Always perform a power-on sequence - drive CNV low after AVDD is stable - to avoid digital contention during supply ramp.
Информация о соответствии
RoHS compliant per Analog Devices product page. Pb-free PBF suffix variants available. Not AEC-Q100 qualified - choose automotive-grade equivalent for that requirement.
