LTC2393CUK-16 - 16-Bit 1Msps SAR ADC 94dB SNR | Analog Devices
Référence : LTC2393CUK-16 ✓ Actif| Qté | Prix unitaire | Total |
|---|---|---|
| 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 Présentation
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.
Alternatives de remplacement direct pour LTC2393CUK-16 — même boîtier, compatible broche à broche. Les références à boîtier différent nécessitant une retouche du PCB sont exclues.
Variantes de cette série
Modèles de la même série directement compatibles avec LTC2393CUK-16 (même facteur de forme et même empreinte) — différant par Package, Resolution, RoHS Status, Input Type, Input Voltage Range.
Outil de comparaison rapide — sélectionnez des références alternatives pour une comparaison côte à côte :
LTC2393IUK-16
✅ Remplacement direct✓ En stock
$10.5 / unité
Voir la fiche technique →LTC2393CUK-16#PBF
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
LTC2393CUK-16#TRPBF
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
LTC2392CUK-16
✅ Remplacement direct✓ En stock
$17.05 / unité
Voir la fiche technique →LTC2389CUK-16
✅ Remplacement direct✓ En stock
$24.96 / unité
Voir la fiche technique →LTC2389IUK-18
✅ Remplacement direct✓ En stock
$45.3 / unité
Voir la fiche technique →LTC2393CUK-16 Valeurs maximales et caractéristiques électriques
| Résolution | 16 bits |
| Architecture | SAR (Successive Approximation Register) |
| Number of Inputs | 1 (fully differential) |
| Sample Rate | 1 Msps |
| SNR | 94 dB |
| Plage de tension d'entrée | ±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) |
| Température de fonctionnement | 0°C to +70°C |
| Boîtier | 48-QFN (7x7 mm) - UK |
| Type de montage | Surface Mount |
| Statut RoHS | Compliant |
Configuration des broches de LTC2393CUK-16
| Broche 1 | IN+ — Positive analog input |
| Broche 2 | IN- — Negative analog input |
| Broche 3 | AGND — Analog ground |
| Broche 4 | REFCOMP — Reference compensation pin |
| Broche 5 | REF — Reference input/output |
| Broche 6 | AGND — Analog ground |
| Broche 7 | AVDD — Analog supply 5V |
| Broche 8 | AGND — Analog ground |
| Broche 9 | AGND — Analog ground |
| Broche 10 | OGND — Output driver ground |
| Broche 11 | OVDD — Output driver supply |
| Broche 12 | D15 — Parallel data bit 15 (MSB) |
| Broche 13 | D14 — Parallel data bit 14 |
| Broche 14 | D13 — Parallel data bit 13 |
| Broche 15 | D12 — Parallel data bit 12 |
| Broche 16 | D11 — Parallel data bit 11 |
| Broche 17 | D10 — Parallel data bit 10 |
| Broche 18 | D9 — Parallel data bit 9 |
| Broche 19 | D8 — Parallel data bit 8 |
| Broche 20 | DGND — Digital ground |
| Broche 21 | OVDD — Output driver supply |
| Broche 22 | D7 — Parallel data bit 7 |
| Broche 23 | D6 — Parallel data bit 6 |
| Broche 24 | D5 — Parallel data bit 5 |
| Broche 25 | D4 — Parallel data bit 4 |
| Broche 26 | D3 — Parallel data bit 3 |
| Broche 27 | D2 — Parallel data bit 2 |
| Broche 28 | D1 — Parallel data bit 1 |
| Broche 29 | D0 — Parallel data bit 0 (LSB) |
| Broche 30 | DGND — Digital ground |
| Broche 31 | BUSY — Conversion in progress indicator |
| Broche 32 | CS — Chip select (active low) |
| Broche 33 | RD — Read strobe (active low) |
| Broche 34 | SCK — Serial clock input |
| Broche 35 | SDO — Serial data output |
| Broche 36 | SER/PAR — Interface mode select |
| Broche 37 | DGND — Digital ground |
| Broche 38 | CNV — Conversion start input |
| Broche 39 | OVDD — Output driver supply |
| Broche 40 | DGND — Digital ground |
| Broche 41 | NC — Not connected |
| Broche 42 | NC — Not connected |
| Broche 43 | NC — Not connected |
| Broche 44 | NC — Not connected |
| Broche 45 | AVDD — Analog supply 5V |
| Broche 46 | AGND — Analog ground (exposed pad) |
| Broche 47 | AGND — Analog ground (exposed pad) |
| Broche 48 | AGND — Analog ground (exposed pad) |
Applications typiques
LTC2393CUK-16 convient pour 6 applications: 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.
Recommandé
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.
Recommandé
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.
Recommandé
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.
Recommandé
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.
Recommandé
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.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour LTC2393CUK-16 — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | 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 |
Principaux différenciateurs
- True bipolar ±VREF input with internal precision reference (vs LTC2389CUK-16)
- Zero cycle latency in both parallel and serial modes (vs LTC2373CUH-18)
- Wide analog supply tolerance (4.5V to 5.5V) (vs LTC2392CUK-16)
Notes de conception
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.
Informations de conformité
RoHS compliant per Analog Devices product page. Pb-free PBF suffix variants available. Not AEC-Q100 qualified - choose automotive-grade equivalent for that requirement.
