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Analog Devices Inc. LTC2313CTS8-12#TRPBF
- Part No.:
- LTC2313CTS8-12#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- SOT-23-8 Thin, TSOT-23-8
- Datasheet:
-
LTC2313CTS8-12#TRPBF.pdf
- Description:
- IC ADC 12BIT SAR TSOT23-8
- Quantity:
- Payment:
- Shipping:
Inventory:2,714
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Product details
Overview
LTC2313CTS8-12#TRPBF from Analog Devices (formerly Linear Technology) is a 12-bit, 2.5 Msps successive approximation register (SAR) analog-to-digital converter in an 8-lead TSOT-23 package. It operates from a single 3V or 5V supply, integrates a low-drift (20 ppm/°C max) internal reference (2.048 V or 4.096 V), and delivers 72.6 dB SINAD and –84 dB THD at full speed-enabling high-fidelity data acquisition in space-constrained, low-power systems such as handheld medical sensors and battery-powered instrumentation.
For engineers reviewing the LTC2313CTS8-12#TRPBF datasheet, LTC2313CTS8-12#TRPBF pinout, LTC2313CTS8-12#TRPBF application, or LTC2313CTS8-12#TRPBF equivalent, key selection criteria include guaranteed 12-bit no-missing-codes performance, nap/sleep mode power management (<1 µA sleep current), SPI-compatible 3-wire serial interface with 1.8–5 V OVDD compatibility, and operation across –40°C to 125°C for automotive and industrial environments.
Technical Context
The LTC2313CTS8-12#TRPBF implements a fully integrated SAR architecture with on-chip sample-and-hold, bandgap reference, reference buffer, and timing logic-all optimized for single-supply operation. Its internal reference automatically configures to 2.048 V at 2.7–3.6 V VDD or 4.096 V at 4.75–5.25 V VDD, eliminating external reference components while maintaining ≤20 ppm/°C drift over temperature.
It uses a 3-wire serial interface (CONV, SCK, SDO) with zero-cycle latency: conversion starts on CONV rising edge, and MSB appears on SDO at CONV falling edge; subsequent bits shift out on SCK falling edges. The dedicated OVDD pin (1.71–5.25 V) decouples digital I/O voltage from analog supply, enabling direct interfacing with 1.8 V, 2.5 V, 3.3 V, or 5 V host logic without level shifters.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 12-bit - guarantees monotonic transfer function and no missing codes across full operating range. |
| Max Sampling Rate | 2.5 Msps - supports real-time capture of signals up to 5 MHz Nyquist bandwidth with minimal latency. |
| SINAD / SNR | 72.6 dB / 73 dBFS at fIN = 497 kHz, VDD = 5 V - enables high-fidelity digitization of medium-bandwidth analog signals (e.g., ultrasound echoes, motor phase currents). |
| THD | –84 dB (first 5 harmonics) - ensures low distortion for precision measurement applications requiring spectral purity. |
| Reference Voltage | 2.048 V (VDD = 2.7–3.6 V) or 4.096 V (VDD = 4.75–5.25 V) - provides exact binary-scaled full-scale ranges (0–2.048 V or 0–4.096 V) simplifying system calibration. |
| Supply Current | 5 mA typical at 2.5 Msps, 3 V; <1 µA in sleep mode - enables ultra-low-power operation in duty-cycled sensing nodes. |
| Operating Temp | –40°C to 125°C (H-grade) - validated for under-hood automotive and industrial control environments. |
Pinout & Package
Package: 8-lead TSOT-23 (0.65 mm pitch), 2.9 mm × 1.6 mm footprint, exposed pad for thermal enhancement. RoHS-compliant, lead-free finish (Pb-free, #TRPBF).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD (Pin 1) | Analog Power Supply | Single 2.7–3.6 V or 4.75–5.25 V supply powering SAR core, reference, and LDO; requires 2.2 µF ceramic bypass to GND. |
| REF (Pin 2) | Reference Input/Output | Outputs internal 2.048 V or 4.096 V reference; can be overdriven externally; must be bypassed with 2.2 µF low-ESR capacitor. |
| GND (Pin 3) | Analog Ground | Primary return path for analog circuitry; must connect directly to solid ground plane to minimize noise coupling. |
| AIN (Pin 4) | Analog Input | Single-ended input referenced to GND, 0 V to VREF; 13 pF sample-mode capacitance; accepts up to VDD + 0.05 V absolute max. |
| OVDD (Pin 5) | Digital I/O Supply | Independent 1.71–5.25 V supply setting logic levels for SDO, SCK, and CONV; enables mixed-voltage system interfacing. |
| SDO (Pin 6) | Serial Data Output | Three-state output; driven only when CONV is low; outputs 12-bit MSB-first stream followed by trailing zeros; level-set by OVDD. |
| SCK (Pin 7) | Serial Clock Input | Accepts up to 90 MHz clock; data valid on falling edge; timing-critical for throughput; requires clean, fast-edge signal. |
| CONV (Pin 8) | Convert Control Input | Active-high start signal; rising edge initiates conversion; falling edge enables SDO and places S/H in sample mode. |
Key Features
| Feature | Design Value |
|---|---|
| No cycle latency serial output | MSB available on SDO at CONV falling edge; full 12-bit word shifts out with zero pipeline delay-critical for deterministic real-time control loops. |
| Integrated low-drift reference | 20 ppm/°C max drift over –40°C to 125°C with factory-trimmed 2.048 V / 4.096 V outputs-eliminates external reference IC and reduces BOM count by one component. |
| Nap mode auto-entry | Enters 2 mA nap mode automatically after conversion completion-reduces average power at sub-Msps rates without software intervention. |
| Sleep mode with fast wake-up | 0.2 µA sleep current; wake-up time 1.1 ms (reference recharge); nap mode wake-up <1 conversion cycle-supports burst-mode acquisition strategies. |
| Wide OVDD interface range | 1.71–5.25 V OVDD allows native interfacing with 1.8 V FPGAs, 2.5 V ASICs, 3.3 V microcontrollers, and 5 V legacy logic-no level-shifter required. |
Applications
| Medical Ultrasound Front-End | Battery-Powered Portable DMM |
|---|---|
Use Scenario: Digitizing echo return signals from piezoelectric transducers in handheld ultrasound probes. IC Role / Device Role / Timing Role: High-speed, low-noise ADC capturing 1–5 MHz RF envelopes with precise amplitude fidelity for B-mode image reconstruction. Use Value: 72.6 dB SINAD and –84 dB THD preserve dynamic range and contrast resolution; 2.5 Msps rate supports >2 cm depth imaging at 1540 m/s sound velocity. |
Use Scenario: Measuring AC/DC voltage, current, and resistance in handheld multimeters with >4½-digit accuracy and 10 readings/sec update rate. IC Role / Device Role / Timing Role: Precision sampling ADC with integrated reference, enabling ratiometric measurements against stable on-chip VREF. Use Value: 20 ppm/°C reference drift ensures <0.01% reading error over operating temperature; 5 mA active current extends battery life in continuous measurement mode. |
| Automotive Engine Control Unit (ECU) | Industrial Motor Phase Current Monitor |
Use Scenario: Sampling crankshaft position sensor signals, knock sensor outputs, and wideband O2 sensor voltages in engine management systems. IC Role / Device Role / Timing Role: Robust, high-temperature ADC performing synchronized multi-channel sampling in harsh under-hood environments. Use Value: Guaranteed operation to 125°C ambient; 12-bit no-missing-codes ensures reliable detection of critical fault thresholds; nap mode cuts idle power during non-critical cycles. |
Use Scenario: Real-time monitoring of three-phase inverter currents in servo drives and variable-frequency drives for closed-loop torque control. IC Role / Device Role / Timing Role: High-throughput ADC capturing current sense amplifier outputs with minimal latency for field-oriented control (FOC) algorithms. Use Value: 2.5 Msps throughput enables >100 kHz current loop bandwidth; zero-latency output aligns sampled data precisely with PWM timing for optimal current regulation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 12-bit SAR ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADS8860IDRCT | 16-bit resolution, 1 Msps, SPI interface, 2.5 V supply only, no internal reference - requires external 2.5 V reference and level-shifting for 1.8 V hosts. | Better DC accuracy (±1 LSB INL), lower noise (86 dB SNR), but half the speed and higher power (3.5 mW vs 14 mW at 3 V) - suited for precision DC measurement, not high-speed transient capture. | Select ADS8860IDRCT when absolute linearity and low-frequency noise dominate over speed and integration; avoid if system lacks 2.5 V reference or needs >1.5 Msps throughput. |
| MAX11198ETE+ | 12-bit, 2 Msps, internal 2.048 V reference, 1.8–3.6 V VDD, 1.7–3.6 V OVDD - lower max sample rate, narrower supply range, same TSOT-23 package. | Optimized for ultra-low-power battery operation (1.5 mW at 2 Msps, 3 V); rated only to 85°C - suitable for portable consumer devices but not automotive or extended-temp industrial use. | Select MAX11198ETE+ for cost-sensitive, battery-limited designs where 2 Msps suffices and 125°C operation is unnecessary; avoid if full 2.5 Msps or H-grade temp is required. |
Compared with ADS8860IDRCT and MAX11198ETE+, the LTC2313CTS8-12#TRPBF uniquely balances 2.5 Msps speed, integrated dual-range reference, 125°C operation, and flexible OVDD-making it the only option among the three qualified for high-reliability, high-throughput, wide-temperature embedded systems without external reference or level-shifting overhead.
Availability
LTC2313CTS8-12#TRPBF is available at Aetrix Electronics and suitable for high-speed data acquisition, battery-operated instrumentation, and automotive engine control applications requiring stable component supply, long-term lifecycle support, and guaranteed parametric performance across temperature.
Supply support for LTC2313CTS8-12#TRPBF 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 LTC2313CTS8-12#TRPBF belongs to ADI's precision SAR ADC product line, designed specifically for compact, low-power, high-speed data acquisition systems where integration, accuracy, and robustness across extreme temperatures are essential.
FAQ
What is the maximum sampling frequency supported by the LTC2313CTS8-12#TRPBF?
The LTC2313CTS8-12#TRPBF supports a maximum sampling frequency of 2.5 Msps across its full operating temperature range (–40°C to 125°C). This is guaranteed by design and tested per the datasheet's ADC timing characteristics table, with minimum throughput time of 400 ns and conversion time of 247 ns. At this rate, the device achieves 72.6 dB SINAD and –84 dB THD with a 5 V supply.
Does the LTC2313CTS8-12#TRPBF require an external reference voltage?
No, the LTC2313CTS8-12#TRPBF does not require an external reference voltage. It integrates a factory-trimmed, low-drift reference that outputs 2.048 V when VDD is between 2.7 V and 3.6 V, or 4.096 V when VDD is between 4.75 V and 5.25 V. The REF pin serves as both output and overdrive-capable input, and must be bypassed with a 2.2 µF ceramic capacitor to GND for stability.
How does the nap mode and sleep mode differ in the LTC2313CTS8-12#TRPBF?
In nap mode, the LTC2313CTS8-12#TRPBF reduces supply current to ~2 mA while retaining reference buffer and bandgap bias-allowing wake-up and accurate conversion within one clock cycle. In sleep mode, all bias circuitry shuts down, reducing current to <1 µA typical, but requiring 1.1 ms for reference recovery before valid conversion. Nap mode is entered with two CONV pulses; sleep mode requires four.
Can the LTC2313CTS8-12#TRPBF interface directly with a 1.8 V microcontroller?
Yes, the LTC2313CTS8-12#TRPBF can interface directly with a 1.8 V microcontroller via its dedicated OVDD pin, which accepts 1.71–5.25 V. When OVDD = 1.8 V, SDO output levels comply with 1.8 V logic thresholds (VOH ≥ 1.6 V, VOL ≤ 0.2 V), and SCK/CONV inputs accept 1.8 V-compatible signals-eliminating external level shifters in mixed-voltage systems.
What is the guaranteed operating temperature range for the LTC2313CTS8-12#TRPBF?
The LTC2313CTS8-12#TRPBF is specified for operation from –40°C to 125°C (H-grade), as confirmed by its orderable part number suffix "HTS8" variant and Absolute Maximum Ratings table. This grade is validated for automotive under-hood and industrial control applications where extended thermal reliability is mandatory.
LTC2313CTS8-12#TRPBF 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:
- 12
- Sampling Rate (Per Second):
- 2.5M
- 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:
- -
LTC2313CTS8-12#TRPBF FAQ
1.How can I place an order for LTC2313CTS8-12#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2313CTS8-12#TRPBF 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 LTC2313CTS8-12#TRPBF reliable?
The price and inventory of LTC2313CTS8-12#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC2313CTS8-12#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC2313CTS8-12#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2313CTS8-12#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2313CTS8-12#TRPBF?
LTC2313CTS8-12#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2313CTS8-12#TRPBF 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 LTC2313CTS8-12#TRPBF?
For technical support, including LTC2313CTS8-12#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2313CTS8-12#TRPBF requirements.
6.How does Aetrix verify that LTC2313CTS8-12#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC2313CTS8-12#TRPBF 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 LTC2313CTS8-12#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC2313CTS8-12#TRPBF?
All LTC2313CTS8-12#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2313CTS8-12#TRPBF, 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 LTC2313CTS8-12#TRPBF part is unused and in its original packaging.
Return procedure for LTC2313CTS8-12#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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