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Analog Devices Inc. LTC2312HTS8-12#TRPBF
- Part No.:
- LTC2312HTS8-12#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- SOT-23-8 Thin, TSOT-23-8
- Datasheet:
-
LTC2312HTS8-12#TRPBF.pdf
- Description:
- IC ADC 12BIT SAR TSOT23-8
- Quantity:
- Payment:
- Shipping:
Inventory:1,627
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Product details
Overview
LTC2312HTS8-12#TRPBF from Analog Devices (formerly Linear Technology) is a 12-bit, 500ksps successive approximation register (SAR) analog-to-digital converter in an 8-lead TSOT-23 package, operating from a single 3V or 5V supply with integrated 2.048V/4.096V reference and reference buffer. It delivers 72.7dB SINAD, –84dB THD, and guaranteed no missing codes across –40°C to 125°C, enabling high-fidelity data acquisition in space-constrained, thermally demanding industrial and automotive systems.
For engineers reviewing the LTC2312HTS8-12#TRPBF datasheet, LTC2312HTS8-12#TRPBF pinout, LTC2312HTS8-12#TRPBF application, or LTC2312HTS8-12#TRPBF equivalent, this page provides verified technical context, real-world timing behavior, thermal-grade performance validation, and precise interface-level design meaning for embedded signal chain integration.
Technical Context
The LTC2312HTS8-12#TRPBF implements a fully integrated SAR architecture with internal bandgap reference, low-drift (≤20ppm/°C) reference buffer, and auto-power-gated nap mode that activates post-conversion. Its 1400ns conversion time and 600ns acquisition window are fixed by internal oscillator timing - no external clock required for core conversion.
It uses a 3-wire SPI-compatible serial interface (CONV, SCK, SDO) with OVDD-supplied logic levels (1.71V–5.25V), enabling direct interfacing to 1.8V/2.5V/3.3V/5V host processors. The SDO output is three-state controlled by CONV, with zero-cycle latency and MSB-first 12-bit data framing followed by trailing zeros.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 12-bit - guarantees monotonic transfer function and full-scale linearity for precision measurement applications. |
| Sampling Rate | 500ksps - enables real-time capture of signals up to 250kHz Nyquist bandwidth without undersampling. |
| SINAD | 72.7dB at fIN = 20kHz, VDD = 5V - defines effective resolution of ~11.8 bits under typical AC conditions. |
| THD | –84dB (first 5 harmonics) - ensures minimal harmonic contamination in spectral analysis and communication receiver front-ends. |
| Reference Voltage | 2.048V (VDD = 2.7–3.6V) or 4.096V (VDD = 4.75–5.25V) - provides exact binary-scaled full-scale range for simplified digital scaling. |
| Operating Temperature | –40°C to +125°C - qualified for under-hood automotive, motor control, and industrial power electronics environments. |
| Supply Current | 3mA at 500ksps (VDD = 5V); <1µA in sleep mode - supports battery-backed or energy-harvested sensing nodes. |
Pinout & Package
Package: 8-lead plastic TSOT-23 (TS8), 3.0mm × 1.6mm × 0.8mm profile, exposed pad not electrically connected.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD (Pin 1) | Analog power supply | Accepts 2.7–3.6V or 4.75–5.25V; powers internal SAR, reference, and analog circuitry; requires 2.2µF ceramic bypass to GND. |
| REF (Pin 2) | Reference input/output | Outputs 2.048V or 4.096V depending on VDD range; may be overdriven externally; must be bypassed with 2.2µF low-ESR capacitor. |
| GND (Pin 3) | Analog ground | Primary return path for analog signals and reference; must connect directly to solid ground plane - no shared traces with digital ground. |
| AIN (Pin 4) | Analog input | Single-ended, 0V to VREF input range; draws ≤1µA DC leakage; input capacitance is 13pF in sample mode, 3pF in hold mode. |
| OVDD (Pin 5) | Digital I/O supply | Supplies logic levels for SCK, CONV, and SDO; supports 1.71–5.25V; decoupled with 2.2µF ceramic capacitor. |
| SDO (Pin 6) | Serial data output | Three-state output enabled by falling edge of CONV; outputs 12-bit MSB-first data with no cycle latency; logic swing referenced to OVDD. |
| SCK (Pin 7) | Serial clock input | Accepts up to 20MHz clock; data valid on falling edge; timing parameters (t4, t7) defined relative to OVDD/2 threshold. |
| CONV (Pin 8) | Convert trigger | Active-high edge initiates conversion; falling edge enables SDO and places S/H into sample mode; controls nap/sleep entry via pulse count. |
Key Features
| Feature | Design Value |
|---|---|
| No missing codes | Guaranteed over full temperature range - eliminates code ambiguity in closed-loop control and safety-critical monitoring. |
| Nap mode wake-up | <1 conversion cycle (≤2000ns) - enables burst-mode sampling without latency penalty or reference re-stabilization delay. |
| Separate OVDD supply | 1.71V–5.25V I/O voltage - allows direct connection to mixed-voltage SoCs, FPGAs, or microcontrollers without level shifters. |
| Internal reference buffer | 20ppm/°C max drift, 2.048V/4.096V output - removes need for external reference IC and associated layout complexity. |
| Low acquisition time | 600ns minimum - permits use with fast-settling op amps (e.g., LT6230) and minimizes dead time between conversions. |
Applications
| Motor Control Feedback | Automotive Battery Monitoring |
|---|---|
|
Use Scenario: Real-time current and voltage sampling in BLDC inverter gate drivers for field-oriented control. IC Role / Device Role / Timing Role: High-speed, low-latency ADC capturing phase currents at 500ksps with deterministic 2000ns throughput time. Use Value: Enables precise torque ripple suppression and overcurrent protection within tight PWM dead-time constraints. |
Use Scenario: Cell voltage and pack current monitoring in 12V/48V automotive battery management systems (BMS). IC Role / Device Role / Timing Role: Precision 12-bit sampling of shunt-based current and stacked-cell voltages across –40°C to 125°C ambient. Use Value: Delivers ±0.5LSB INL and 72.7dB SINAD without external reference, reducing BOM count and calibration burden. |
| Portable Medical Sensor Hub | Industrial Predictive Maintenance Node |
|
Use Scenario: Multi-channel physiological signal digitization (ECG, SpO₂, respiration) in handheld diagnostic devices. IC Role / Device Role / Timing Role: Low-power SAR ADC operating from 3V supply with sleep mode (<1µA) between patient measurements. Use Value: Achieves 73dB SNR at 500ksps while consuming only 8mW - extends battery life without sacrificing diagnostic fidelity. |
Use Scenario: Vibration and temperature acquisition on rotating machinery using edge AI inference at the sensor node. IC Role / Device Role / Timing Role: Ruggedized ADC with guaranteed operation to 125°C and integrated reference for unattended deployment. Use Value: Eliminates external reference drift errors in long-term trending of bearing fault frequencies and thermal derating thresholds. |
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 |
|---|---|---|---|
| ADS7953IRHBT | 12-bit, 1MSPS, SPI interface, no internal reference - requires external 2.5V reference and reference buffer. | Higher speed but larger 32-pin QFN package; lacks integrated reference and extended temperature grade. | Choose when >500ksps is required and board space allows external reference; not drop-in for thermal-critical designs. |
| MAX11192ETE+ | 12-bit, 500ksps, internal 2.048V reference, –40°C to +105°C rating - 15ppm/°C ref drift, 71.5dB SINAD. | Same sampling rate and reference integration, but lower temperature ceiling and slightly degraded AC performance. | Consider for cost-sensitive industrial applications where 105°C suffices and 1.2dB SINAD margin is acceptable. |
Compared with ADS7953IRHBT and MAX11192ETE+, the LTC2312HTS8-12#TRPBF uniquely combines –40°C to 125°C operation, integrated low-drift reference, and zero-cycle latency in an 8-pin TSOT-23 - making it optimal for compact, high-reliability automotive and industrial edge sensors where thermal robustness and minimal BOM are critical.
Availability
LTC2312HTS8-12#TRPBF is available at Aetrix Electronics and suitable for motor control feedback, automotive battery monitoring, portable medical sensor hubs, and industrial predictive maintenance nodes requiring stable component supply across extended temperature ranges.
Supply support for LTC2312HTS8-12#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 LTC2312HTS8-12#TRPBF belongs to ADI's precision SAR ADC product line, designed specifically for high-speed, low-power, thermally rugged data acquisition in space-constrained embedded systems where reference integration and wide temperature operation are mandatory.
FAQ
What is the maximum sampling frequency of the LTC2312HTS8-12#TRPBF?
The LTC2312HTS8-12#TRPBF has a guaranteed maximum sampling frequency of 500ksps across its full operating temperature range (–40°C to +125°C). This is achieved using an internal oscillator - no external clock is required for conversion timing. At this rate, the device delivers 72.7dB SINAD and –84dB THD with a 5V supply, and maintains guaranteed 12-bit no-missing-codes performance.
Does the LTC2312HTS8-12#TRPBF require an external reference?
No, the LTC2312HTS8-12#TRPBF integrates a low-drift (≤20ppm/°C) reference and reference buffer. It automatically outputs 2.048V when powered from 2.7–3.6V, or 4.096V when powered from 4.75–5.25V. The REF pin must be bypassed with a 2.2µF ceramic capacitor, but no external reference IC is needed - simplifying layout and reducing BOM cost.
How does the nap mode function in the LTC2312HTS8-12#TRPBF?
The LTC2312HTS8-12#TRPBF automatically enters nap mode after each conversion completes, reducing supply current to ~2mA while keeping the internal reference and bandgap active. Wake-up is immediate - the next CONV pulse initiates acquisition within one conversion cycle (≤2000ns). This enables efficient burst-mode sampling without reference stabilization delays.
What is the purpose of the OVDD pin on the LTC2312HTS8-12#TRPBF?
The OVDD pin on the LTC2312HTS8-12#TRPBF supplies power to the digital interface (SCK, CONV, SDO), supporting logic levels from 1.71V to 5.25V independently of VDD. This allows direct interfacing with 1.8V, 2.5V, 3.3V, or 5V host processors without level shifters - critical for mixed-voltage system designs and FPGA/MCU compatibility.
Can the LTC2312HTS8-12#TRPBF operate from a 3.3V supply?
No - the LTC2312HTS8-12#TRPBF is specified only for two VDD ranges: 2.7–3.6V (outputs 2.048V reference) and 4.75–5.25V (outputs 4.096V reference). A 3.3V supply falls within the first range and is fully supported; however, "3.3V" is not a discrete supply point - operation is validated across the entire 2.7–3.6V band, including 3.3V nominal.
LTC2312HTS8-12#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):
- 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:
- -40°C ~ 125°C
- Supplier Device Package:
- TSOT-23-8
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
LTC2312HTS8-12#TRPBF FAQ
1.How can I place an order for LTC2312HTS8-12#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2312HTS8-12#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 LTC2312HTS8-12#TRPBF reliable?
The price and inventory of LTC2312HTS8-12#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC2312HTS8-12#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC2312HTS8-12#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2312HTS8-12#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2312HTS8-12#TRPBF?
LTC2312HTS8-12#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2312HTS8-12#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 LTC2312HTS8-12#TRPBF?
For technical support, including LTC2312HTS8-12#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2312HTS8-12#TRPBF requirements.
6.How does Aetrix verify that LTC2312HTS8-12#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC2312HTS8-12#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 LTC2312HTS8-12#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC2312HTS8-12#TRPBF?
All LTC2312HTS8-12#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2312HTS8-12#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 LTC2312HTS8-12#TRPBF part is unused and in its original packaging.
Return procedure for LTC2312HTS8-12#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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