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Analog Devices Inc. LTC2315HTS8-12#TRPBF
- Part No.:
- LTC2315HTS8-12#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- SOT-23-8 Thin, TSOT-23-8
- Datasheet:
-
LTC2315HTS8-12#TRPBF.pdf
- Description:
- IC ADC 12BIT SAR TSOT23-8
- Quantity:
- Payment:
- Shipping:
Inventory:3,290
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Product details
Overview
LTC2315HTS8-12#TRPBF from Analog Devices (formerly Linear Technology) is a 12-bit, 5 Msps successive approximation register (SAR) analog-to-digital converter in an 8-lead TSOT-23 package, operating from –40°C to 125°C. It features an integrated 2.048 V / 4.096 V reference with ≤20 ppm/°C drift, 72.6 dB SINAD at 500 kHz input, and 6.4 mA supply current at 5 V - enabling high-speed data acquisition in automotive engine control units and industrial sensor interfaces.
For engineers reviewing the LTC2315HTS8-12#TRPBF datasheet, LTC2315HTS8-12#TRPBF pinout, LTC2315HTS8-12#TRPBF application, or LTC2315HTS8-12#TRPBF equivalent, key selection criteria include guaranteed 12-bit no-missing-codes performance over temperature, nap/sleep mode power management (<1 µA sleep current), SPI-compatible serial interface with 1.8 V–5 V OVDD compatibility, and TSOT-23 footprint suitability for space-constrained embedded systems.
Technical Context
The LTC2315HTS8-12#TRPBF implements a single-ended SAR architecture with internal bandgap reference and reference buffer, automatically selecting 2.048 V output for 2.7–3.6 V VDD or 4.096 V for 4.75–5.25 V VDD. Its timing logic supports three SCK timing modes - including SCK-high-during-acquisition for full 5 Msps throughput - with 1-cycle conversion latency and MSB-first serial output on SDO.
It separates analog (VDD) and digital I/O (OVDD) supplies to decouple noise-sensitive conversion from host interface logic. Nap mode retains reference bias for sub-50 ns wake-up; sleep mode disables bandgap and reference buffer, requiring 1.1 ms VREF recovery before valid conversion.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 12-bit - guarantees monotonic transfer function and no missing codes across full temperature range. |
| Sampling Rate | 5 Msps maximum - enables real-time digitization of signals up to 2.5 MHz Nyquist bandwidth. |
| SINAD | 72.6 dB at fIN = 500 kHz, VDD = 5 V - ensures ≥11.8 effective bits for precision measurement applications. |
| Reference Voltage | 2.048 V (2.7–3.6 V VDD) or 4.096 V (4.75–5.25 V VDD) - provides scalable 0 V to VREF input range without external reference. |
| Supply Current | 6.4 mA at 5 V, 5 Msps - achieves 32 mW total power dissipation, supporting compact thermal design. |
| Operating Temperature | –40°C to +125°C - qualified for under-hood automotive and harsh industrial environments. |
| Power-Down Current | 0.8 µA typical in sleep mode - extends battery life in portable diagnostic tools and remote sensors. |
Pinout & Package
Package: 8-lead plastic TSOT-23 (TS8), 3.0 mm × 1.6 mm × 0.8 mm, exposed pad optional, RoHS-compliant, lead-free finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - VDD | Analog power supply | 2.7–3.6 V or 4.75–5.25 V input; powers SAR core, reference, and sample-and-hold; requires 2.2 µF ceramic bypass to GND. |
| 2 - REF | Reference input/output | Outputs 2.048 V or 4.096 V depending on VDD; accepts external overdrive ≥50 mV above internal VREF; bypassed with 2.2 µF low-ESR capacitor. |
| 3 - GND | Analog ground | Primary return path for analog circuitry; must connect directly to solid ground plane to minimize noise coupling. |
| 4 - AIN | Analog input | Single-ended input referenced to GND; 0 V to VREF range; 13 pF sample-mode capacitance; ≤1 µA DC leakage. |
| 5 - OVDD | Digital I/O supply | 1.71–5.25 V logic supply for CS, SCK, SDO; sets output voltage levels and input thresholds independently of VDD. |
| 6 - SDO | Serial data output | Three-state MSB-first output; driven by OVDD; enters high-Z when CS is high; outputs 12-bit result with 1 or 2 leading zeros. |
| 7 - SCK | Serial clock input | Falling-edge-triggered; supports up to 87.5 MHz; controls conversion timing and data readout; timing critical for t2, t10, tTHROUGHPUT. |
| 8 - CS | Chip select input | Active-low; falling edge initiates conversion and frames serial transfer; rising edge places S/H in sample mode and forces SDO high-Z. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated reference with auto-scaled span | Eliminates external reference IC and reduces BOM count; 2.048 V / 4.096 V selection is automatic based on VDD voltage range. |
| Nap mode with fast wake-up | 1.8 mA quiescent current and <50 ns wake-up time enable rapid duty-cycled sampling without reference settling delay. |
| SPI-compatible 3-wire interface | Supports 1.8 V, 2.5 V, 3.3 V, and 5 V host logic via independent OVDD supply - simplifies interfacing to mixed-voltage SoCs and FPGAs. |
| Guaranteed operation at 125°C | Full AC/DC specifications validated over –40°C to +125°C - suitable for engine control, transmission sensing, and downhole instrumentation. |
| Low aperture jitter | 10 ps RMS enables high-fidelity digitization of RF and IF signals up to 500 kHz without SNR degradation from sampling uncertainty. |
Applications
| Automotive Engine Control Unit (ECU) | Industrial Motor Drive Current Sensing |
|---|---|
|
Use Scenario: Real-time sampling of crankshaft position, throttle angle, and exhaust gas oxygen sensor signals under hood temperatures up to 125°C. IC Role / Device Role / Timing Role: Primary ADC for closed-loop combustion control; converts analog sensor outputs into digital feedback for microcontroller-based PID algorithms. Use Value: 5 Msps throughput and guaranteed 12-bit linearity ensure precise timing resolution for ignition advance calculation and misfire detection. |
Use Scenario: High-speed current monitoring in servo drives using shunt resistors, where fast transient response is required for overcurrent protection. IC Role / Device Role / Timing Role: Isolated analog front-end ADC capturing motor phase currents with minimal latency for field-oriented control (FOC) loops. Use Value: 72.6 dB SINAD at 500 kHz and 40 ns acquisition time support accurate current reconstruction during PWM switching transitions. |
| Portable Medical Ultrasound Front-End | Battery-Powered Power Quality Analyzer |
|
Use Scenario: Digitizing echo signals from piezoelectric transducers in handheld ultrasound devices with strict size and thermal constraints. IC Role / Device Role / Timing Role: Low-power, high-SNR ADC in receive chain; operates from Li-ion battery (3.3 V nominal) with nap mode between scan lines. Use Value: 6.4 mA active current and <1 µA sleep current extend battery runtime; 2.2 µF REF bypass enables stable imaging frame rates. |
Use Scenario: Monitoring voltage and current harmonics in commercial building electrical panels using clamp-on CTs and potential transformers. IC Role / Device Role / Timing Role: Dual-channel synchronized sampling ADC capturing simultaneous waveforms for FFT-based THD and SFDR analysis. Use Value: –84 dB THD and 87 dBc SFDR allow accurate identification of 5th–13th harmonic content per IEEE 519 standards. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-speed SAR ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADS8860IDRCT | 16-bit, 1 Msps, SPI interface, 2.5 V supply only, no internal reference - requires external REF3025 or similar. | Better DC accuracy (±0.5 LSB INL), lower speed; suited for precision DC measurements rather than dynamic signal capture. | Select when resolution > speed; avoid if 5 Msps or integrated reference is required. |
| MAX11198ETE+ | 12-bit, 5 Msps, internal 2.048 V reference, –40°C to +105°C rating, 10-lead TDFN package. | Same speed and resolution but limited to +105°C max; lacks nap mode; higher 8.5 mA supply current at 5 V. | Acceptable for industrial ambient use below 105°C; not suitable for under-hood automotive deployment. |
Compared with ADS8860IDRCT and MAX11198ETE+, the LTC2315HTS8-12#TRPBF uniquely combines 5 Msps throughput, integrated auto-scaling reference, nap/sleep power states, and full –40°C to +125°C qualification - making it the only option meeting all four requirements simultaneously for thermally demanding, battery-aware, high-dynamic-range systems.
Availability
LTC2315HTS8-12#TRPBF is available at Aetrix Electronics and suitable for automotive ECU development, industrial motor drive commissioning, and portable medical device prototyping requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for LTC2315HTS8-12#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 aerospace, automotive, industrial, and healthcare markets.
The LTC2315HTS8-12#TRPBF belongs to ADI's precision SAR ADC product line, engineered for high-speed, low-power, wide-temperature applications where integration, reliability, and dynamic performance are critical - especially in safety-critical embedded systems.
FAQ
What is the maximum sampling rate supported by the LTC2315HTS8-12#TRPBF?
The LTC2315HTS8-12#TRPBF supports a maximum sampling rate of 5 Msps, achievable only when using the SCK-high-during-acquisition timing mode with an 87.5 MHz serial clock. Other timing configurations (SCK-low or continuous SCK) yield up to 4.86 Msps. This 5 Msps rate is fully specified and guaranteed over the –40°C to +125°C operating range for the LTC2315HTS8-12#TRPBF.
Does the LTC2315HTS8-12#TRPBF require an external reference voltage?
No, the LTC2315HTS8-12#TRPBF does not require an external reference. It integrates a precision bandgap reference and reference buffer that automatically outputs either 2.048 V (when VDD is 2.7–3.6 V) or 4.096 V (when VDD is 4.75–5.25 V). The REF pin is internally buffered and must be bypassed with a 2.2 µF ceramic capacitor to GND for stable operation of the LTC2315HTS8-12#TRPBF.
How does nap mode differ from sleep mode in the LTC2315HTS8-12#TRPBF?
In nap mode, the LTC2315HTS8-12#TRPBF reduces supply current to ~1.8 mA while retaining bias on the internal bandgap and reference buffer, enabling wake-up and valid conversion within one clock cycle (<50 ns). In sleep mode, all bias circuitry is shut down, reducing current to 0.8 µA typical, but requiring 1.1 ms for VREF recovery before accurate conversion - making nap mode ideal for burst sampling and sleep mode best for extended idle periods.
Can the LTC2315HTS8-12#TRPBF interface directly with a 1.8 V microcontroller?
Yes, the LTC2315HTS8-12#TRPBF can interface directly with a 1.8 V microcontroller by setting OVDD = 1.8 V. Its digital inputs (CS, SCK) accept 0.2 × OVDD to 0.8 × OVDD thresholds, and its SDO output swings rail-to-rail relative to OVDD - ensuring compatible logic levels without level shifters. This OVDD flexibility is a core design feature of the LTC2315HTS8-12#TRPBF.
What is the guaranteed operating temperature range for the LTC2315HTS8-12#TRPBF?
The LTC2315HTS8-12#TRPBF is rated for guaranteed operation from –40°C to +125°C, corresponding to the "H" grade in Linear Technology's (now Analog Devices) temperature classification. All AC and DC specifications - including SINAD, INL, DNL, and timing parameters - are tested and guaranteed across this full range, making the LTC2315HTS8-12#TRPBF suitable for under-hood automotive and high-ambient industrial applications.
LTC2315HTS8-12#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):
- 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:
- -40°C ~ 125°C
- Supplier Device Package:
- TSOT-23-8
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
LTC2315HTS8-12#TRPBF FAQ
1.How can I place an order for LTC2315HTS8-12#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2315HTS8-12#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 LTC2315HTS8-12#TRPBF reliable?
The price and inventory of LTC2315HTS8-12#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC2315HTS8-12#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC2315HTS8-12#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2315HTS8-12#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2315HTS8-12#TRPBF?
LTC2315HTS8-12#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2315HTS8-12#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 LTC2315HTS8-12#TRPBF?
For technical support, including LTC2315HTS8-12#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2315HTS8-12#TRPBF requirements.
6.How does Aetrix verify that LTC2315HTS8-12#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC2315HTS8-12#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 LTC2315HTS8-12#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC2315HTS8-12#TRPBF?
All LTC2315HTS8-12#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2315HTS8-12#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 LTC2315HTS8-12#TRPBF part is unused and in its original packaging.
Return procedure for LTC2315HTS8-12#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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