LTC2313CTS8-14 - 14-Bit 2.5Msps Serial ADC | Analog Devices
Teilenummer: LTC2313CTS8-14 ✓ Aktiv| Menge | Stückpreis | Gesamt |
|---|---|---|
| 1 | $8.5 | $8,50 |
| 10 | $7.65 | $76,50 |
| 100 | $6.8 | $680,00 |
| 500 | $6.1 | $3.050,00 |
| 1.000 | $5.45 | $5.450,00 |
LTC2313CTS8-14 Übersicht
A successive-approximation-register (SAR) ADC is a precision data-converter architecture that performs one bit at a time using a binary search against the input signal. SAR ADCs sit in the broader signal-chain taxonomy of data converters (SAR -> ADC -> data converter -> mixed-signal IC), and they are favored for their deterministic latency, lack of pipeline delay, and excellent DC accuracy at moderate sampling rates.
Key features include 2.5Msps guaranteed sampling rate, 14-bit resolution with no missing codes, an integrated reference with 20ppm/°C maximum drift, an integrated reference buffer, and a high-speed SPI-compatible serial interface. The single 3V/5V supply operation simplifies power-tree design, while the low 5mA supply current keeps thermal dissipation low in dense analog layouts.
The architecture uses a charge-redistribution SAR core with an internal conversion clock, eliminating the need for an external high-frequency master clock. The integrated 2.5V reference and buffer maintain specified accuracy over the full -40°C to +85°C commercial temperature range. The serial data output (SCK, SDOUT, CNV) supports standard SPI/QSPITM-compatible controllers, simplifying FPGA/CPLD or microcontroller interface logic.
Typical applications include portable instrumentation, battery-powered data acquisition systems, multiplexed data acquisition front ends, isolated industrial sensors, and optical networking modules. The TSOT-23-8 footprint and minimal external BOM make this part especially attractive where PCB area is at a premium.
When designing with this device, place the 10µF decoupling capacitor as close as possible to the REFIN/REFH pin and the supply pin to minimize conversion noise. Although the part is rated for a single 3V/5V supply, the user must ensure that the digital I/O logic levels match the host MCU/FPGA to avoid signal-integrity issues at 2.5Msps.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone.
Drop-in-Alternativen für LTC2313CTS8-14 – gleiches Gehäuse, Pin-kompatibel. Bauteile mit anderem Gehäuse, die eine PCB-Überarbeitung erfordern, sind ausgeschlossen.
Varianten dieser Serie
Modelle derselben Serie, die drop-in-kompatibel sind mit LTC2313CTS8-14 (gleiche Bauform und Footprint) – abweichend in Resolution, RoHS Status, Operating Temperature Range, Package, Supply Current.
Schnellvergleichstool – Wählen Sie Alternativbauteile für den Direktvergleich:
LTC2313ITS8-14
✅ Drop-In📋 Referenzalternative (nicht im Katalog)
LTC2313HTS8-14#TRMPBF
✅ Drop-In📋 Referenzalternative (nicht im Katalog)
LTC2313CTS8-14#TRPBF
✅ Drop-In📋 Referenzalternative (nicht im Katalog)
LTC2315ITS8-12
✅ Drop-In📋 Referenzalternative (nicht im Katalog)
LTC2312HTS8-14
✅ Drop-In✓ Auf Lager
$4.1 / Stück
Datenblatt ansehen →ADS8318IDRCR
✅ Drop-In✓ Auf Lager
$6.85 / Stück
Datenblatt ansehen →LTC2313CTS8-14 Grenzwerte & elektrische Eigenschaften
| Auflösung | 14 bit |
| Abtastrate | 2.5 Msps |
| Architecture | SAR (Successive Approximation Register) |
| Number of Channels | 1 Input |
| Versorgungsspannung | 3 V or 5 V (single supply) |
| Versorgungsstrom | 5 mA typical |
| Integrated Reference | Yes (low drift, 20 ppm/°C max) |
| Integrated Reference Buffer | Yes |
| Data Interface | Serial (SPI-compatible) |
| Betriebstemperatur | -40 °C to +85 °C (Commercial) |
| Package Type | TSOT-23-8 (Thin SOT-23, 8-pin) |
| Montageart | Surface Mount |
| RoHS-Status | Compliant (per #PBF suffix) |
LTC2313CTS8-14 Pin-Konfiguration
| Pin 1 | IN+ — Analog input (positive differential input) |
| Pin 2 | GND — Ground reference |
| Pin 3 | REF — Reference decoupling |
| Pin 4 | REFH — Reference high / reference buffer output |
| Pin 5 | AVDD — Analog supply input (3V or 5V) |
| Pin 6 | SDOUT — Serial data output (SPI MOSI) |
| Pin 7 | SCK — Serial clock input |
| Pin 8 | CNV — Conversion start / chip enable |
Typische Anwendungen
LTC2313CTS8-14 ist geeignet für 6 Anwendungs: Portable Battery-Powered Data Acquisition, Multiplexed Industrial Sensor Front-End, Optical Networking Monitoring Module, Medical Patient Monitoring Wearable, Automotive Sensor Interface Module, Test and Measurement Instrumentation.
Portable Battery-Powered Data Acquisition
The LTC2313CTS8-14's 5mA supply current at 2.5Msps and single 3V/5V supply make it ideal for portable battery-powered data acquisition. Its integrated 2.5V reference (20ppm/°C max) eliminates external reference components, reducing BOM count and PCB area by 30-40% versus discrete-ADC designs. Placed near the analog sensor with the SPI bus routed to the host MCU, it supports up to 2.5Msps continuous conversion on a single Li-ion cell. Engineers should consider using the part's integrated reference for ±10V sensor interfaces with a front-end attenuator; the supply current scales linearly with sampling rate, allowing duty-cycled operation to extend battery life in intermittent-sampling applications.
Empfohlen
Multiplexed Industrial Sensor Front-End
The LTC2313CTS8-14's 14-bit no-missing-codes performance and SPI-compatible serial interface simplify multiplexed industrial sensor front-end designs. With 2.5Msps throughput, it can rapidly cycle through thermocouple, strain-gauge, and pressure-sensor channels using an external analog MUX. Its -40°C to +85°C commercial temperature grade and integrated reference buffer maintain accuracy over factory-floor temperature swings. Place the LTC2313CTS8-14 close to the MUX output to minimize charge-injection settling time, and use a small RC filter at the analog input to absorb MUX transients. The 8-pin TSOT-23-8 footprint occupies less than 9mm², ideal for compact 4-channel PLC modules.
Empfohlen
Optical Networking Monitoring Module
The LTC2313CTS8-14's compact TSOT-23-8 package and low 5mA supply current suit SFP/SFP+ optical networking monitoring modules where board area is severely constrained. Its integrated reference provides a stable 2.5V full-scale for monitoring the laser driver's average power and bias current via transimpedance amplifier outputs. At 2.5Msps, the converter easily oversamples the kHz-range DFB laser control loops without adding latency. Designers should pay attention to ground isolation between the analog AGND and the host MCU's digital ground; a 0Ω ferrite-bead bridge plus a star-ground topology minimize digital switching noise coupling into the converter input.
Empfohlen
Medical Patient Monitoring Wearable
The LTC2313CTS8-14's low 5mA consumption, integrated reference, and small TSOT-23-8 footprint suit wearable patient-monitoring patches measuring ECG, SpO2, or body temperature. Its 14-bit resolution captures the 0.5mV-5mV ECG signal range with adequate headroom for clinical-grade accuracy when paired with a low-noise analog front end. Operating from a single 3V coin-cell, the ADC supports hours of continuous recording at sub-1Msps duty-cycled rates. To preserve battery life, set the CNV pin low between conversions; the part consumes microamps of standby current between conversions, ideal for sampling intervals of 100ms or longer.
Empfohlen
Automotive Sensor Interface Module
While the LTC2313CTS8-14 itself is commercial-grade, its SPI-compatible serial interface and integrated reference make it a strong candidate for non-safety automotive sensor interface modules such as HVAC controls and battery management telemetry. Its 14-bit no-missing-codes performance over -40°C to +85°C handles the underhood temperature range for cabin-mounted modules. With 2.5Msps throughput, the ADC easily captures multiple sensor channels via an external MUX within the 100ms automotive refresh cycle. Designers targeting AEC-Q100 applications should evaluate the LTC2313ITS8-14 (industrial temperature) variant instead.
Empfohlen
Test and Measurement Instrumentation
The LTC2313CTS8-14's 14-bit accuracy, 2.5Msps throughput, and integrated reference fit bench-top DMMs, oscilloscope auxiliary channels, and laboratory data loggers. Its SPI-compatible output streams directly into an FPGA or microcontroller for real-time DSP processing. At 2.5Msps, the ADC comfortably oversamples audio-bandwidth signals for noise-shaped digital filtering. Reference the analog input with a small anti-alias RC filter (typically 1kΩ/100pF) to suppress out-of-band noise; the -3dB bandwidth should be set near 4-5MHz to preserve the 2.5Msps Nyquist band while rejecting MHz-range interferers common on the bench.
Empfohlen
Zusammenfassung der empfohlenen Produkte
Technische Referenzdaten für LTC2313CTS8-14 – Vergleich, Designhinweise und Compliance-Informationen.
Auswahlhilfe
Vergleich mit Alternativen
| Parameter | Dieses Produkt | LTC2313ITS8-14 | LTC2313HTS8-14#TRMPBF | LTC2313CTS8-14#TRPBF | LTC2315ITS8-12 | LTC2312HTS8-14 | ADS8318IDRCR |
|---|---|---|---|---|---|---|---|
| Package | TSOT-23-8 | TSOT-23-8 (same) | TSOT-23-8 (same) | TSOT-23-8 (same) | TSOT-23-8 (same) | TSOT-23-8 (same) | TSOT-23-8 (same) |
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Texas Instruments |
| Resolution | 14 bit | 14 bit | 14 bit | 14 bit | 12 bit | 14 bit | 12 bit |
| Sampling Rate | 2.5 Msps | 2.5 Msps | 2.5 Msps | 2.5 Msps | 2.5 Msps | 500 ksps | 500 ksps |
| Integrated Reference | Yes (20 ppm/°C max) | Yes | Yes | Yes | Yes | Yes | No (external required) |
| Data Interface | Serial SPI-compatible | Serial SPI | Serial SPI | Serial SPI | Serial SPI | Serial SPI | Serial SPI |
| Operating Temperature | -40 °C to +85 °C (Commercial) | -40 °C to +85 °C (Industrial) | -40 °C to +125 °C (Extended) | -40 °C to +85 °C | -40 °C to +85 °C | -40 °C to +125 °C | -40 °C to +85 °C |
Wichtigste Unterscheidungsmerkmale
- Integrated reference and reference buffer in TSOT-23-8 (vs. ADS8318IDRCR)
- Higher sampling rate than LTC2312 family (vs. LTC2312HTS8-14)
- Higher resolution than LTC2315-12 family (vs. LTC2315ITS8-12)
Designhinweise
Place the 10µF decoupling capacitor (X7R or X5R ceramic) within 2mm of the AVDD pin and a 0.1µF capacitor directly adjacent for high-frequency noise bypass. Connect all ground pins to a single-point ground star, separating AGND and DGND at the package and joining them only at the system ground plane. The TSOT-23-8 lead frame cannot dissipate much power, so avoid running high-current return paths beneath the part.
Route the SCK and SDOUT traces as a matched-impedance differential pair (typically 50Ω to ground) with a maximum length of 50mm to prevent ringing at 2.5Msps. Keep the digital traces on the opposite side of the ground plane from the analog IN+ trace. Place a small ferrite bead (600Ω at 100MHz) in series with the SCK trace near the host controller if noise coupling is observed.
Do not leave the CNV pin floating - it must be tied high through a 10kΩ pull-up or driven actively by the host MCU to avoid spurious conversions during power-up. Ensure the REF pin bypass capacitor is rated for 5V operation minimum to avoid breakdown, and use a low-ESR ceramic (X7R) type. Avoid loading the REFH pin with more than 2mA to maintain reference accuracy over temperature.
Estimated: at VDD=5V and full 2.5Msps conversion rate, the part consumes 5mA × 5V = 25mW. With idle/standby current of ~1µA, duty-cycled operation (10% duty) drops average consumption to ~3mW, enabling coin-cell powered designs to operate for months. Use the CNV pin to gate conversions and place the MCU in sleep between samples for maximum battery life.
Compliance-Informationen
RoHS compliance verified per #PBF ordering suffix. Not AEC-Q100 qualified; evaluate LTC2313ITS8-14 for industrial-grade designs.
