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Analog Devices Inc. LTC2312CTS8-14#TRMPBF
- Part No.:
- LTC2312CTS8-14#TRMPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- SOT-23-8 Thin, TSOT-23-8
- Datasheet:
-
LTC2312CTS8-14#TRMPBF.pdf
- Description:
- IC ADC 14BIT SAR TSOT23-8
- Quantity:
- Payment:
- Shipping:
Inventory:951
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Product details
Overview
LTC2312CTS8-14#TRMPBF from Analog Devices (formerly Linear Technology) is a 14-bit, 500ksps successive approximation register (SAR) analog-to-digital converter in an 8-lead TSOT-23 package. It operates from a single 3V or 5V analog supply, integrates a low-drift (20ppm/°C max) internal reference (2.048V or 4.096V), and delivers 77dB SINAD and –85dB THD at full speed-enabling high-fidelity signal acquisition in compact, battery-operated medical imaging and handheld terminal systems.
For engineers reviewing the LTC2312CTS8-14#TRMPBF datasheet, LTC2312CTS8-14#TRMPBF pinout, LTC2312CTS8-14#TRMPBF application, or LTC2312CTS8-14#TRMPBF equivalent, key selection criteria include guaranteed no-missing-codes performance, nap/sleep mode power management (<1µA sleep current), SPI-compatible 3-wire serial interface with 1.8V–5V OVDD compatibility, and operation across 0°C to 70°C.
Technical Context
The LTC2312CTS8-14#TRMPBF implements a SAR architecture with integrated bandgap reference, LDO, and reference buffer-automatically selecting 2.048V output for VDD = 2.7–3.6V or 4.096V for VDD = 4.75–5.25V. Its sample-and-hold circuit acquires input signals in 700ns and completes conversion in 1300ns, enabling true 500ksps throughput with zero-cycle latency.
It uses a 3-wire serial interface (CONV, SCK, SDO) where CONV rising edge initiates conversion and falling edge enables MSB-first 14-bit data output on SDO, synchronized to SCK falling edges. The dedicated OVDD pin (1.71–5.25V) decouples digital I/O voltage from analog supply, supporting interoperability with 1.8V, 2.5V, 3.3V, and 5V host logic without level shifters.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 14-bit-guarantees monotonic transfer function and no missing codes over full temperature range. |
| Sampling Rate | 500ksps-supports real-time acquisition of signals up to 5MHz full-power bandwidth (–3dB). |
| SINAD / SNR | 77dB / 77.5dBFS at 500ksps, fIN = 259kHz-enables >12.5 effective bits in high-speed measurement applications. |
| THD | –85dB-limits harmonic distortion for clean spectral analysis in communication and medical imaging systems. |
| Reference Drift | 20ppm/°C max-ensures stable full-scale accuracy across 0°C to 70°C without external calibration. |
| Supply Current | 3.2mA at 500ksps (VDD = 5V); <1µA in sleep mode-reduces thermal load and extends battery life in portable designs. |
| Acquisition Time | 700ns-defines minimum time required for analog input to settle before conversion begins. |
Pinout & Package
Package: 8-lead TSOT-23 (0.65mm pitch), 2.9mm × 1.6mm footprint, thermally enhanced with exposed pad (not electrically connected). RoHS-compliant, lead-free finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD (Pin 1) | Analog supply input | Accepts 2.7–3.6V or 4.75–5.25V; powers internal reference, SAR core, and sample-and-hold. |
| REF (Pin 2) | Reference input/output | Outputs 2.048V (low-VDD) or 4.096V (high-VDD); may be overdriven externally; requires 2.2µF ceramic bypass. |
| GND (Pin 3) | Analog ground | Primary return path for analog circuitry; must connect directly to solid ground plane. |
| AIN (Pin 4) | Analog input | Single-ended, 0V to VREF range; input capacitance 13pF (sample mode), 3pF (hold mode). |
| OVDD (Pin 5) | Digital I/O supply | 1.71–5.25V supply setting logic levels for SDO, SCK, and CONV; isolates digital noise from analog section. |
| SDO (Pin 6) | Serial data output | Three-state, MSB-first 14-bit output; enters Hi-Z when CONV = high; timing referenced to SCK falling edge. |
| SCK (Pin 7) | Serial clock input | Accepts up to 20MHz clock; controls data shift rate; logic levels defined by OVDD. |
| CONV (Pin 8) | Convert control input | Active-high edge-triggered start signal; falling edge enables SDO and initiates sample mode. |
Key Features
| Feature | Design Value |
|---|---|
| No cycle latency | Conversion result appears on SDO immediately after CONV falling edge-eliminates pipeline delay in closed-loop control. |
| Nap mode auto-entry | Enters low-power nap mode automatically after each conversion; resumes full performance in <50ns upon next CONV pulse. |
| Separate OVDD supply | Enables direct interfacing with 1.8V FPGA I/O banks or 5V microcontrollers without level-shifting components. |
| Guaranteed operation to 70°C | Specified and tested over full industrial temperature range (0°C to 70°C) per LTC2312CTS8-14#TRMPBF ordering option. |
| Low acquisition time | 700ns tACQ allows use with fast-settling op amps (e.g., LT6230) or direct drive from low-Z sources. |
Applications
| Medical Imaging Front-End | Handheld Terminal Data Acquisition |
|---|---|
Use Scenario: Digitizing ultrasound echo signals or ECG waveforms in portable diagnostic devices with strict size and power constraints. IC Role / Device Role / Timing Role: Primary high-speed ADC capturing analog sensor outputs with minimal latency and drift-induced baseline error. Use Value: 77.5dB SNR preserves weak signal integrity; integrated 2.048V reference eliminates need for external precision voltage source. | Use Scenario: Sampling barcode scanner photodiode outputs or touch-screen controller analog signals in ruggedized field terminals. IC Role / Device Role / Timing Role: Low-power, single-supply ADC interfacing directly with 1.8V or 3.3V SoC via SPI-compatible 3-wire bus. Use Value: <1µA sleep current extends battery life between scans; nap mode enables rapid wake-up for burst sampling. |
| Uninterruptible Power Supply Monitoring | Automotive Battery Management System |
Use Scenario: Real-time monitoring of AC line voltage, DC bus voltage, and inverter current in UPS units requiring high accuracy and reliability. IC Role / Device Role / Timing Role: Precision voltage/current sensing ADC with guaranteed 14-bit linearity and low THD for harmonic analysis. Use Value: –85dB THD supports accurate RMS and power factor calculation; 20ppm/°C reference ensures stable readings across ambient temperature swings. | Use Scenario: Cell voltage and temperature monitoring in 12V automotive battery packs operating under engine bay thermal stress. IC Role / Device Role / Timing Role: High-reliability ADC performing periodic cell measurements during vehicle idle or ignition cycles. Use Value: Specified operation to 70°C ambient meets automotive interior requirements; low 9mW (3V) power minimizes self-heating in sealed enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 14-bit SAR ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADS8860IDRCT | 16-bit resolution, 1MSPS, SPI interface, 2.5V supply only; no integrated reference; requires external REF3025 or similar. | Better resolution and speed but higher system complexity and cost due to external reference and tighter supply regulation. | Select when 16-bit precision and >500ksps throughput are mandatory, and board space permits external reference design. |
| MAX11198ETE+ | 14-bit, 500ksps, internal 2.048V reference, 1.8V–3.6V supply; smaller 10-pin µDFN package; no nap/sleep modes. | Lower supply voltage range and no autonomous power-down-requires host-controlled power sequencing for energy savings. | Select for ultra-low-voltage (1.8V) systems where TSOT-23 footprint is not required and continuous conversion is preferred. |
Compared with ADS8860IDRCT and MAX11198ETE+, the LTC2312CTS8-14#TRMPBF uniquely combines integrated dual-range reference, automatic nap mode, and 0°C to 70°C guaranteed operation in a space-constrained TSOT-23 package-making it optimal for cost-sensitive, battery-powered instrumentation where system-level simplicity and thermal robustness are critical.
Availability
LTC2312CTS8-14#TRMPBF is available at Aetrix Electronics and suitable for medical imaging front-ends, handheld terminal data acquisition, and uninterruptible power supply monitoring requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for LTC2312CTS8-14#TRMPBF includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Analog Devices, Inc. (ADI) is a global leader in high-performance analog, mixed-signal, and digital signal processing technologies, serving industrial, automotive, communications, and healthcare markets.
The LTC2312CTS8-14#TRMPBF belongs to ADI's legacy Linear Technology precision SAR ADC family, engineered for high-speed, low-power, single-supply data acquisition in space- and energy-constrained embedded systems.
FAQ
What is the maximum sampling frequency supported by the LTC2312CTS8-14#TRMPBF?
The LTC2312CTS8-14#TRMPBF supports a maximum sampling frequency of 500ksps, verified across its full operating temperature range (0°C to 70°C). This rate is achieved with 1300ns conversion time and 700ns acquisition time, enabling true 2µs throughput per sample. The device maintains 77dB SINAD and guaranteed no-missing-codes performance at this rate, making the LTC2312CTS8-14#TRMPBF suitable for demanding real-time signal capture applications.
Does the LTC2312CTS8-14#TRMPBF require an external reference voltage?
No, the LTC2312CTS8-14#TRMPBF does not require an external reference voltage-it integrates a precision, low-drift (20ppm/°C max) reference that outputs 2.048V when VDD is 2.7–3.6V or 4.096V when VDD is 4.75–5.25V. The REF pin functions as both output and overvoltage input, allowing external reference injection if needed. This integration reduces BOM count and PCB area, a key advantage of the LTC2312CTS8-14#TRMPBF in compact designs.
How does the nap mode function in the LTC2312CTS8-14#TRMPBF?
The LTC2312CTS8-14#TRMPBF automatically enters nap mode after each conversion completes, reducing supply current to ~2mA while retaining full reference and bias circuitry. Wake-up occurs in <50ns upon the next CONV pulse, enabling immediate high-accuracy sampling-unlike sleep mode, which requires 1.1ms recovery. This behavior makes nap mode ideal for burst-mode acquisition in the LTC2312CTS8-14#TRMPBF, balancing power savings with zero-latency responsiveness.
What digital interface voltage levels does the LTC2312CTS8-14#TRMPBF support?
The LTC2312CTS8-14#TRMPBF supports 1.8V, 2.5V, 3V, and 5V logic levels via its dedicated OVDD pin (1.71–5.25V range), independent of the analog VDD supply. SDO output swing, SCK input thresholds, and CONV logic levels all track OVDD-not VDD-allowing seamless interfacing with mixed-voltage systems such as 1.8V FPGAs or 5V microcontrollers without external level shifters. This flexibility is a core feature of the LTC2312CTS8-14#TRMPBF.
Is the LTC2312CTS8-14#TRMPBF pin-compatible with other members of the LTC2312 family?
Yes, the LTC2312CTS8-14#TRMPBF is pin-compatible with the entire LTC2312/LTC2313/LTC2314 14-bit and LTC2312/LTC2313/LTC2315 12-bit SAR ADC families in the 8-lead TSOT-23 package-including LTC2312CTS8-12#TRMPBF and LTC2313CTS8-14#TRMPBF. Identical pinout, timing, and interface simplify design reuse and migration across resolution and speed grades, a documented hardware compatibility feature of the LTC2312CTS8-14#TRMPBF.
LTC2312CTS8-14#TRMPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- SOT-23-8 Thin, TSOT-23-8
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Number of Bits:
- 14
- Sampling Rate (Per Second):
- 500k
- Number of Inputs:
- 1
- Input Type:
- Single Ended
- Data Interface:
- SPI
- Configuration:
- S/H-ADC
- Ratio - S/H:ADC:
- 1:1
- Number of A/D Converters:
- 1
- Architecture:
- SAR
- Reference Type:
- Internal
- Voltage - Supply, Analog:
- 2.7V ~ 3.6V, 5V
- Voltage - Supply, Digital:
- 2.7V ~ 3.6V, 5V
- Features:
- -
- Operating Temperature:
- 0°C ~ 70°C
- Supplier Device Package:
- TSOT-23-8
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
LTC2312CTS8-14#TRMPBF FAQ
1.How can I place an order for LTC2312CTS8-14#TRMPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2312CTS8-14#TRMPBF on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for LTC2312CTS8-14#TRMPBF reliable?
The price and inventory of LTC2312CTS8-14#TRMPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC2312CTS8-14#TRMPBF is usually 5 days.
3.What payment methods are accepted for LTC2312CTS8-14#TRMPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2312CTS8-14#TRMPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2312CTS8-14#TRMPBF?
LTC2312CTS8-14#TRMPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2312CTS8-14#TRMPBF order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for LTC2312CTS8-14#TRMPBF?
For technical support, including LTC2312CTS8-14#TRMPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2312CTS8-14#TRMPBF requirements.
6.How does Aetrix verify that LTC2312CTS8-14#TRMPBF is sourced from the original manufacturer or authorized distributors?
All LTC2312CTS8-14#TRMPBF products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that LTC2312CTS8-14#TRMPBF meets industry standards.
7.What is the process for return or replacement of LTC2312CTS8-14#TRMPBF?
All LTC2312CTS8-14#TRMPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2312CTS8-14#TRMPBF, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The LTC2312CTS8-14#TRMPBF part is unused and in its original packaging.
Return procedure for LTC2312CTS8-14#TRMPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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