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Analog Devices Inc. LTC2301HMS#PBF
- Part No.:
- LTC2301HMS#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 12-TSSOP (0.118", 3.00mm Width)
- Datasheet:
-
LTC2301HMS#PBF.pdf
- Description:
- IC ADC 12BIT SAR 12MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,397
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Product details
Overview
LTC2301HMS#PBF from Analog Devices (formerly Linear Technology) is a 1-channel, 12-bit successive approximation ADC with I²C-compatible serial interface, internal 2.5V reference, and fully differential sample-and-hold circuit. It operates from a single 5V supply, achieves 1.3μs conversion time, and supports software-selectable unipolar (0–4.096V) or bipolar (±2.048V) input ranges - ideal for precision sensor interfacing in space-constrained industrial monitoring systems.
For engineers reviewing the LTC2301HMS#PBF datasheet, LTC2301HMS#PBF pinout, LTC2301HMS#PBF application, or LTC2301HMS#PBF equivalent, key selection considerations include its –40°C to 125°C extended temperature rating, 73.5dB SNR at 1kHz, 14ksps throughput, low 300μA active current, and MSOP-12 package compatibility with high-reliability embedded data acquisition.
Technical Context
The LTC2301HMS#PBF implements a capacitive charge-redistribution SAR architecture with internal clocking, eliminating external timing components. Its analog front-end includes a fully differential sample-and-hold stage referenced to an internal 2.5V bandgap reference and buffered 4.096V REFCOMP output, enabling precise ratiometric measurements without external voltage references.
Control and data transfer occur via a standard-mode/fast-mode I²C interface supporting nine configurable slave addresses plus global synchronization. The device uses a 6-bit DIN word to configure input polarity (O/S bit), unipolar/bipolar mode (UNI bit), and sleep mode (SLP bit), with conversion results output as 12-bit data + four trailing zeros on the SDA line.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 12-bit with guaranteed no missing codes - ensures monotonicity and full-scale linearity across all operating conditions. |
| SNR | 73.5dB at 1kHz input - enables accurate digitization of low-amplitude signals in noisy industrial environments. |
| Throughput Rate | 14ksps - supports real-time sampling of motor control feedback, power supply telemetry, and accelerometer waveforms. |
| Input Range | Software-selectable 0V–4.096V (unipolar) or ±2.048V (bipolar) - simplifies interface to both ground-referenced and floating sensors. |
| Supply Current | 300μA at 1ksps; 225μA typical in nap mode - extends battery life in portable instrumentation and remote sensing nodes. |
| Operating Temp | –40°C to +125°C - qualified for under-hood automotive, industrial PLC, and aerospace-adjacent applications. |
| Reference | Internal 2.5V VREF (±25ppm/°C tempco) and 4.096V REFCOMP - eliminates external reference ICs and reduces BOM count and PCB area. |
Pinout & Package
Package: 12-lead plastic MSOP (3mm × 4.9mm), exposed pad not present (DFN variant only). Pinout validated per LTC2301 MSOP top-view diagram and PIN FUNCTIONS section.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND (Pins 1, 4, 9) | Ground reference | Three independent ground connections required for analog/digital separation and noise immunity; must connect to solid ground plane. |
| SDA (Pin 2) | I²C bidirectional data line | Open-drain output during read (requires pull-up); high-impedance input during write; carries 12-bit result + 4 trailing zeros. |
| SCL (Pin 3) | I²C clock input | Slave-only interface; data latched on rising edge, shifted out on falling edge - compatible with standard I²C controllers. |
| CH0 (Pin 5) | Differential input positive | Primary analog input; polarity selectable via O/S bit - used with CH1 or IN– for true differential measurement. |
| CH1 (Pin 6) | Differential input negative | Complementary input for CH0; forms fully differential pair with 70dB CMRR - rejects common-mode noise in motor drive feedback paths. |
| VREF (Pin 7) | 2.5V internal reference output | Bypass with ≥2.2μF ceramic capacitor; can be overdriven by external 2.5V source to improve accuracy or drift performance. |
| REFCOMP (Pin 8) | 4.096V reference buffer output | Bypass with 10μF + 0.1μF ceramics; provides stable scaling voltage for unipolar/bipolar range selection and ratiometric sensing. |
| VDD (Pin 10) | 5V analog supply | 4.75V–5.25V operation; bypass with 10μF + 0.1μF ceramics - powers analog core, reference, and I/O buffers. |
| AD1 / AD0 (Pins 11, 12) | I²C address configuration | Three-state inputs (LOW/HIGH/floating) set one of nine slave addresses - enables multi-device I²C bus without address conflict. |
Key Features
| Feature | Design Value |
|---|---|
| Fully differential SAR architecture | Eliminates need for external op-amp front-end while maintaining 73.5dB SNR and 79dB SFDR - reduces component count and layout complexity. |
| Integrated 2.5V reference + 4.096V buffer | Removes external reference IC and associated decoupling, saving >3mm² PCB area and improving long-term stability over temperature. |
| Software-configurable unipolar/bipolar mode | Single register bit (UNI) switches full-scale range between 0–4.096V and ±2.048V - enables reuse across diverse sensor types without hardware change. |
| Low-power nap/sleep modes | Reduces current to 225μA (nap) or 7μA (sleep) - extends operational lifetime in battery-powered condition monitoring and IoT edge nodes. |
| –40°C to +125°C operation | Qualified across full range per LTC2301H specification - supports deployment in engine compartments, industrial drives, and outdoor infrastructure. |
Applications
| Motor Control Feedback | Power Supply Monitoring |
|---|---|
Use Scenario: Sampling current-sense amplifier outputs and DC bus voltage in BLDC motor inverters. IC Role / Device Role / Timing Role: 12-bit precision ADC capturing analog feedback at up to 14ksps with <1.3μs latency. Use Value: Enables closed-loop torque control with <±1 LSB offset error drift over –40°C to 125°C, reducing thermal calibration overhead. |
Use Scenario: Real-time monitoring of rail voltages (3.3V, 5V, 12V) and current shunt drops in telecom rectifiers. IC Role / Device Role / Timing Role: I²C-connected ADC providing ratiometric measurements referenced to internal 4.096V REFCOMP. Use Value: Eliminates external reference, achieving ±0.5 LSB full-scale error match across rails without trimming. |
| Industrial Process Sensors | Battery-Operated Instrumentation |
Use Scenario: Interfacing 4–20mA loop-powered transmitters and RTD bridges in factory automation nodes. IC Role / Device Role / Timing Role: Low-noise, differential-input ADC with software-selectable bipolar mode for zero-centered sensor outputs. Use Value: Delivers 73.4dB SINAD at 1kHz, supporting ENOB >11.8 bits for high-fidelity process variable digitization. |
Use Scenario: Portable multimeters and handheld environmental monitors requiring long battery life and compact size. IC Role / Device Role / Timing Role: Ultra-low-power ADC with 7μA sleep current and MSOP-12 footprint (3mm × 4.9mm). Use Value: Enables >1-year operation on coin-cell batteries while maintaining 12-bit resolution and I²C configurability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 12-bit I²C ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADS7822U | 8-pin SOIC, 12-bit, SPI interface only; no internal reference; requires external 2.5V ref and VREF decoupling. | Not pin-compatible; requires SPI host and external reference design - increases layout effort and BOM cost. | Select when SPI is preferred over I²C and board space allows external reference integration. |
| MCP3221A0T-E/OT | 6-pin SOT-23, 12-bit, I²C interface; internal 2.048V reference; max 10ksps; rated –40°C to +85°C only. | Smaller package but lower speed and narrower temperature range - unsuitable for 125°C environments or >10ksps sampling. | Select for cost-sensitive, space-constrained designs where extended temperature and 14ksps are not required. |
Compared with ADS7822U and MCP3221A0T-E/OT, the LTC2301HMS#PBF uniquely combines I²C compatibility, integrated 2.5V/4.096V references, 14ksps throughput, and –40°C to +125°C qualification - making it the only option that satisfies high-reliability, reference-free, high-speed industrial data acquisition without redesign.
Availability
LTC2301HMS#PBF is available at Aetrix Electronics and suitable for industrial process control, motor control feedback, and battery-operated instrumentation requiring stable component supply across extended temperature ranges.
Supply support for LTC2301HMS#PBF 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 acquired Linear Technology in 2017 and maintains full product support, documentation, and manufacturing continuity for the LTC portfolio.
The LTC2301HMS#PBF belongs to the LTC2301/LTC2305 family of low-power, I²C-compatible SAR ADCs designed specifically for space- and power-constrained industrial and automotive-qualified data acquisition systems.
FAQ
What is the maximum sampling rate of the LTC2301HMS#PBF?
The LTC2301HMS#PBF achieves a maximum throughput rate of 14ksps in successive-read mode, with a fixed 1.3μs conversion time per sample. This rate is maintained across the full –40°C to +125°C operating range and is independent of I²C bus speed, as conversion is internally clocked.
Does the LTC2301HMS#PBF require an external reference voltage?
No, the LTC2301HMS#PBF integrates a precision 2.5V bandgap reference (VREF) and a buffered 4.096V output (REFCOMP), eliminating the need for external reference components. These internal references are specified over the full –40°C to +125°C range with ±25ppm/°C tempco.
How does the LTC2301HMS#PBF handle differential versus single-ended inputs?
The LTC2301HMS#PBF is a 1-channel device with dedicated CH0 (IN+) and CH1 (IN–) pins configured exclusively for fully differential input operation. Polarity is software-selectable via the O/S bit in the 6-bit DIN word - no single-ended mode is supported, unlike the 2-channel LTC2305 variant.
What I²C address options are available for the LTC2301HMS#PBF?
The LTC2301HMS#PBF supports nine unique I²C slave addresses determined by the logic states (LOW/HIGH/floating) of AD0 and AD1 pins. This enables up to nine LTC2301HMS#PBF devices on a single I²C bus without address collision, plus one global address for synchronized wake-up.
Is the LTC2301HMS#PBF pin-compatible with other variants in the LTC2301/LTC2305 family?
Yes, the LTC2301HMS#PBF shares identical MSOP-12 pinout and signal mapping with all LTC2301xMS#PBF variants (e.g., LTC2301CMS#PBF, LTC2301IMS#PBF), including GND, SDA, SCL, CH0, CH1, VREF, REFCOMP, VDD, AD1, and AD0. Only temperature grade and marking differ.
LTC2301HMS#PBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 12-TSSOP (0.118", 3.00mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Number of Bits:
- 12
- Sampling Rate (Per Second):
- 14k
- Number of Inputs:
- 1
- Input Type:
- Differential, Single Ended
- Data Interface:
- I2C
- Configuration:
- MUX-S/H-ADC
- Ratio - S/H:ADC:
- 1:1
- Number of A/D Converters:
- 1
- Architecture:
- SAR
- Reference Type:
- External, Internal
- Voltage - Supply, Analog:
- 5V
- Voltage - Supply, Digital:
- 5V
- Features:
- Selectable Address
- Operating Temperature:
- -40°C ~ 125°C
- Supplier Device Package:
- 12-MSOP
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
LTC2301HMS#PBF FAQ
1.How can I place an order for LTC2301HMS#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2301HMS#PBF 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 LTC2301HMS#PBF reliable?
The price and inventory of LTC2301HMS#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC2301HMS#PBF is usually 5 days.
3.What payment methods are accepted for LTC2301HMS#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2301HMS#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2301HMS#PBF?
LTC2301HMS#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2301HMS#PBF 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 LTC2301HMS#PBF?
For technical support, including LTC2301HMS#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2301HMS#PBF requirements.
6.How does Aetrix verify that LTC2301HMS#PBF is sourced from the original manufacturer or authorized distributors?
All LTC2301HMS#PBF 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 LTC2301HMS#PBF meets industry standards.
7.What is the process for return or replacement of LTC2301HMS#PBF?
All LTC2301HMS#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2301HMS#PBF, 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 LTC2301HMS#PBF part is unused and in its original packaging.
Return procedure for LTC2301HMS#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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