LTC2393CUK-16 - 16-Bit 1Msps SAR ADC 94dB SNR | Analog Devices
MPN: LTC2393CUK-16 ✓ פעילLTC2393CUK-16 סקירה
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.
חלופות תחליף ישיר עבור LTC2393CUK-16 — אותו מארז, תואם פין-לפין. חלקים במארז שונה הדורשים עיבוד מחדש של ה-PCB אינם נכללים.
וריאנטים בסדרה זו
דגמים מאותה סדרה התואמים Drop-in עם LTC2393CUK-16 (אותו גורם צורה וטביעת רגל) — שונים ב Package, Resolution, RoHS Status, Input Type, Input Voltage Range.
LTC2393IUK-16
✅ Drop-Inצור קשר לקבלת מחיר
הצג גיליון נתונים ←LTC2393CUK-16#PBF
✅ Drop-In📋 חלופה להתייחסות (לא בקטלוג)
LTC2393CUK-16#TRPBF
✅ Drop-In📋 חלופה להתייחסות (לא בקטלוג)
LTC2392CUK-16
✅ Drop-Inצור קשר לקבלת מחיר
הצג גיליון נתונים ←LTC2389CUK-16
✅ Drop-Inצור קשר לקבלת מחיר
הצג גיליון נתונים ←LTC2389IUK-18
✅ Drop-Inצור קשר לקבלת מחיר
הצג גיליון נתונים ←LTC2393CUK-16 דירוגים מרביים ומאפיינים חשמליים
| רזולוציה | 16 bits |
| Architecture | SAR (Successive Approximation Register) |
| Number of Inputs | 1 (fully differential) |
| Sample Rate | 1 Msps |
| SNR | 94 dB |
| טווח מתח כניסה | ±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) |
| טמפרטורת פעולה | 0°C to +70°C |
| מארז | 48-QFN (7x7 mm) - UK |
| סוג הרכבה | Surface Mount |
| סטטוס RoHS | Compliant |
תצורת פינים של LTC2393CUK-16
| פין 1 | IN+ — Positive analog input |
| פין 2 | IN- — Negative analog input |
| פין 3 | AGND — Analog ground |
| פין 4 | REFCOMP — Reference compensation pin |
| פין 5 | REF — Reference input/output |
| פין 6 | AGND — Analog ground |
| פין 7 | AVDD — Analog supply 5V |
| פין 8 | AGND — Analog ground |
| פין 9 | AGND — Analog ground |
| פין 10 | OGND — Output driver ground |
| פין 11 | OVDD — Output driver supply |
| פין 12 | D15 — Parallel data bit 15 (MSB) |
| פין 13 | D14 — Parallel data bit 14 |
| פין 14 | D13 — Parallel data bit 13 |
| פין 15 | D12 — Parallel data bit 12 |
| פין 16 | D11 — Parallel data bit 11 |
| פין 17 | D10 — Parallel data bit 10 |
| פין 18 | D9 — Parallel data bit 9 |
| פין 19 | D8 — Parallel data bit 8 |
| פין 20 | DGND — Digital ground |
| פין 21 | OVDD — Output driver supply |
| פין 22 | D7 — Parallel data bit 7 |
| פין 23 | D6 — Parallel data bit 6 |
| פין 24 | D5 — Parallel data bit 5 |
| פין 25 | D4 — Parallel data bit 4 |
| פין 26 | D3 — Parallel data bit 3 |
| פין 27 | D2 — Parallel data bit 2 |
| פין 28 | D1 — Parallel data bit 1 |
| פין 29 | D0 — Parallel data bit 0 (LSB) |
| פין 30 | DGND — Digital ground |
| פין 31 | BUSY — Conversion in progress indicator |
| פין 32 | CS — Chip select (active low) |
| פין 33 | RD — Read strobe (active low) |
| פין 34 | SCK — Serial clock input |
| פין 35 | SDO — Serial data output |
| פין 36 | SER/PAR — Interface mode select |
| פין 37 | DGND — Digital ground |
| פין 38 | CNV — Conversion start input |
| פין 39 | OVDD — Output driver supply |
| פין 40 | DGND — Digital ground |
| פין 41 | NC — Not connected |
| פין 42 | NC — Not connected |
| פין 43 | NC — Not connected |
| פין 44 | NC — Not connected |
| פין 45 | AVDD — Analog supply 5V |
| פין 46 | AGND — Analog ground (exposed pad) |
| פין 47 | AGND — Analog ground (exposed pad) |
| פין 48 | AGND — Analog ground (exposed pad) |
יישומים טיפוסיים
LTC2393CUK-16 מתאים עבור 6 יישוםs: 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.
מומלץ
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.
מומלץ
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.
מומלץ
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.
מומלץ
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.
מומלץ
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.
מומלץ
סיכום מוצרים מומלצים
נתוני עזר הנדסיים עבור LTC2393CUK-16 — השוואה, הנחיות תכנון ומידע על תאימות.
מדריך בחירה
השוואה עם חלופות
| פרמטר | מוצר זה | 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 |
מבדילים עיקריים
- True bipolar ±VREF input with internal precision reference (לעומתLTC2389CUK-16)
- Zero cycle latency in both parallel and serial modes (לעומתLTC2373CUH-18)
- Wide analog supply tolerance (4.5V to 5.5V) (לעומתLTC2392CUK-16)
הערות תכנון
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.
מידע על תאימות
RoHS compliant per Analog Devices product page. Pb-free PBF suffix variants available. Not AEC-Q100 qualified - choose automotive-grade equivalent for that requirement.
