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Analog Devices Inc. LTC2301HMS#TRPBF
- Part No.:
- LTC2301HMS#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 12-TSSOP (0.118", 3.00mm Width)
- Datasheet:
-
LTC2301HMS#TRPBF.pdf
- Description:
- IC ADC 12BIT SAR 12MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,595
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Product details
Overview
LTC2301HMS#TRPBF 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#TRPBF datasheet, LTC2301HMS#TRPBF pinout, LTC2301HMS#TRPBF application, or LTC2301HMS#TRPBF equivalent, key selection criteria include guaranteed no missing codes, –40°C to 125°C operation in MSOP package, I²C address configurability via AD0/AD1 pins, and low 300μA active current at 1ksps throughput.
Technical Context
The LTC2301HMS#TRPBF implements a capacitive charge-redistribution SAR architecture with internal conversion clock, eliminating external timing components. Its analog input stage features a fully differential sample-and-hold that rejects common-mode noise, and supports polarity inversion via O/S bit programming - enabling flexible differential signal acquisition without external op-amps.
It uses a 2-wire I²C interface with nine programmable slave addresses plus global synchronization, operating up to 400kHz clock rate. The device includes dedicated REFCOMP (4.096V) and VREF (2.5V) outputs, each with specified bypassing requirements (10μF + 0.1μF and 2.2μF respectively), and enters nap mode between conversions to reduce power to 7μA.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 12-bit with guaranteed no missing codes - ensures monotonic transfer function for closed-loop control accuracy. |
| Conversion Time | 1.3μs - enables 14ksps maximum throughput without external clock management. |
| SNR | 73.5dB at 1kHz - supports >11.5 effective bits for high-fidelity sensor digitization. |
| Integral Nonlinearity | ±1 LSB max over temperature - maintains linearity across full industrial range (–40°C to 125°C). |
| Supply Current | 300μA at 1ksps, 7μA in nap mode - enables battery operation with minimal quiescent drain. |
| Input Range | Software-selectable 0–4.096V unipolar or ±2.048V bipolar - matches standard transducer output spans without external gain/level shift. |
| Reference | Internal 2.5V VREF and 4.096V REFCOMP - eliminates need for external reference ICs and reduces BOM count. |
Pinout & Package
Package: 12-lead plastic MSOP (3mm × 4.9mm), rated for –40°C to 125°C operation. Exposed pad not present (DFN variant has exposed GND pad; MSOP does not).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND (Pins 1, 4, 9) | Ground reference | Three independent ground connections required for analog/digital separation and noise reduction. |
| SDA (Pin 2) | I²C bidirectional data line | Open-drain output during read; high-impedance input during write - requires external pull-up to VDD. |
| SCL (Pin 3) | I²C clock input | Slave-only interface - clock must be supplied externally; data latched on rising edge, shifted out on falling edge. |
| CH0 (Pin 5) | Differential analog input (+) | Primary analog input channel; polarity selectable via O/S bit - used with IN– (Pin 6) for true differential acquisition. |
| CH1 (Pin 6) | Differential analog input (–) | Complementary input for CH0; forms fully differential pair with CH0 - rejects common-mode interference. |
| VREF (Pin 7) | 2.5V internal reference output | Bypass with ≥2.2μF ceramic capacitor; can be overdriven by external 2.5V source for improved stability. |
| REFCOMP (Pin 8) | 4.096V reference buffer output | Bypass with 10μF + 0.1μF ceramics; disabled when VREF is grounded - allows external reference substitution. |
| VDD (Pin 10) | 5V analog supply | 4.75V–5.25V operation; bypass with 10μF + 0.1μF ceramics - powers analog core and reference circuits. |
| AD1 (Pin 11) | I²C address bit A1 | Three-state (LOW/HIGH/floating) configuration pin - selects one of nine I²C addresses per device. |
| AD0 (Pin 12) | I²C address bit A0 | Three-state (LOW/HIGH/floating) configuration pin - works with AD1 to set unique I²C slave address. |
Key Features
| Feature | Design Value |
|---|---|
| 12-bit SAR with no missing codes | Ensures monotonicity for feedback control loops and prevents code ambiguities in safety-critical measurements. |
| Fully differential sample-and-hold | Rejects common-mode noise up to 70dB - critical for noisy industrial environments with long sensor cables. |
| Software-selectable unipolar/bipolar mode | Eliminates need for external level-shifting circuitry when interfacing with AC-coupled or bipolar sensors. |
| Internal 2.5V reference + 4.096V REFCOMP | Reduces PCB area and component count - avoids external reference ICs and associated layout complexity. |
| Nap mode (7μA) and sleep mode (225μA) | Enables ultra-low-power operation in battery-powered data loggers without sacrificing wake-up latency. |
| –40°C to 125°C guaranteed operation | Validated performance across full automotive under-hood and industrial motor drive temperature ranges. |
Applications
| Industrial Process Control | Motor Control Feedback |
|---|---|
Use Scenario: Monitoring pressure, temperature, and flow transducers in PLC-based control cabinets. IC Role / Device Role / Timing Role: Primary analog front-end digitizing 4–20mA loop signals conditioned to 0–4.096V range. Use Value: Internal 4.096V REFCOMP directly matches industrial DAC output spans, eliminating scaling errors. |
Use Scenario: Sampling current-sense amplifier outputs in three-phase inverter gate drivers. IC Role / Device Role / Timing Role: High-speed acquisition of phase currents with <1.3μs conversion for real-time FOC algorithms. Use Value: Differential input rejects PWM switching noise; 73.5dB SNR preserves resolution for torque ripple analysis. |
| Accelerometer Measurements | Power Supply Monitoring |
Use Scenario: Digitizing low-noise MEMS accelerometer outputs in structural health monitoring nodes. IC Role / Device Role / Timing Role: Low-power, high-SNR acquisition of ±2g/±4g analog outputs in battery-operated wireless sensors. Use Value: Bipolar mode supports direct connection; 700kHz full linear bandwidth captures mechanical resonance peaks. |
Use Scenario: Monitoring rail voltages (12V, 5V, 3.3V) and current shunt drops in telecom rectifiers. IC Role / Device Role / Timing Role: Simultaneous multi-rail sensing using external multiplexing or discrete LTC2301HMS#TRPBF per rail. Use Value: 12-bit resolution resolves 12mV steps on 5V rail; internal reference ensures drift-free long-term accuracy. |
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 level-shifting for 5V systems. | Not pin-compatible; lacks I²C support and bipolar mode - unsuitable for existing I²C bus architectures. | Select only if SPI is preferred and board redesign accommodates external reference and level shifters. |
| MAX11603AUT+T | 8-pin SOT23, 12-bit, I²C-compatible, internal 2.048V ref - lower reference voltage limits unipolar span to 0–2.048V. | Smaller package but reduced input range - requires gain stage for 4–20mA transducers outputting >2V. | Choose for ultra-compact designs where 2.048V span suffices and thermal derating above 85°C is acceptable. |
Compared with ADS7822U and MAX11603AUT+T, the LTC2301HMS#TRPBF uniquely combines I²C compatibility, 4.096V REFCOMP, –40°C to 125°C rating, and software-configurable bipolar/unipolar modes in a single MSOP package - reducing system-level design effort for ruggedized industrial sensing.
Availability
LTC2301HMS#TRPBF is available at Aetrix Electronics and suitable for industrial process control, motor control feedback, and power supply monitoring requiring stable component supply across extended temperature ranges.
Supply support for LTC2301HMS#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 semiconductors, serving industrial, automotive, communications, and healthcare markets.
The LTC2301HMS#TRPBF belongs to ADI's precision SAR ADC product line, designed specifically for low-power, high-accuracy sensor interfacing in harsh environments where reliability and temperature stability are critical.
FAQ
What is the operating temperature range of the LTC2301HMS#TRPBF?
The LTC2301HMS#TRPBF is rated for continuous operation from –40°C to 125°C, validated across this full range for parameters including integral nonlinearity (±1 LSB), SNR (71dB min), and supply current. This H-grade specification makes LTC2301HMS#TRPBF suitable for under-hood automotive and industrial motor drive applications where ambient temperatures exceed 85°C.
Does the LTC2301HMS#TRPBF require an external reference voltage?
No, the LTC2301HMS#TRPBF includes an internal 2.5V reference (VREF) and a buffered 4.096V reference (REFCOMP), both specified over temperature. While external references can be applied by grounding VREF and driving REFCOMP, the internal references are sufficient for most precision applications - eliminating external reference ICs and reducing BOM cost and PCB area.
How many I²C addresses does the LTC2301HMS#TRPBF support?
The LTC2301HMS#TRPBF supports nine unique I²C slave addresses via two three-state address pins (AD0 and AD1), each configurable as LOW, HIGH, or floating. This allows up to nine LTC2301HMS#TRPBF devices on a single I²C bus without address conflict - ideal for multi-channel sensor arrays or modular data acquisition systems.
Can the LTC2301HMS#TRPBF interface with 3.3V microcontrollers?
Yes, the LTC2301HMS#TRPBF's I²C interface is voltage-level agnostic: SDA and SCL pins tolerate 0–5.25V logic levels, and VIH/VIL thresholds (2.85V/1.5V) ensure reliable communication with 3.3V MCUs. Pull-up resistors should connect to the MCU's I/O voltage (e.g., 3.3V), not VDD, to maintain proper logic levels and avoid contention.
What is the acquisition time requirement for the LTC2301HMS#TRPBF?
The LTC2301HMS#TRPBF specifies 240ns acquisition time (tACQ) - the minimum interval needed after the start of conversion for the internal sample-and-hold to settle to 12-bit accuracy. This value is fixed and independent of external source impedance; however, higher source impedances may require additional external filtering to meet settling within tACQ.
LTC2301HMS#TRPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 12-TSSOP (0.118", 3.00mm Width)
- Packaging:
- Tape & Reel (TR)
- 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#TRPBF FAQ
1.How can I place an order for LTC2301HMS#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2301HMS#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 LTC2301HMS#TRPBF reliable?
The price and inventory of LTC2301HMS#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC2301HMS#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC2301HMS#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2301HMS#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2301HMS#TRPBF?
LTC2301HMS#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2301HMS#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 LTC2301HMS#TRPBF?
For technical support, including LTC2301HMS#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2301HMS#TRPBF requirements.
6.How does Aetrix verify that LTC2301HMS#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC2301HMS#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 LTC2301HMS#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC2301HMS#TRPBF?
All LTC2301HMS#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2301HMS#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 LTC2301HMS#TRPBF part is unused and in its original packaging.
Return procedure for LTC2301HMS#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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