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Analog Devices Inc. LTC2301CMS#TRPBF
- Part No.:
- LTC2301CMS#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 12-TSSOP (0.118", 3.00mm Width)
- Datasheet:
-
LTC2301CMS#TRPBF.pdf
- Description:
- IC ADC 12BIT SAR 12MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,926
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Product details
Overview
LTC2301CMS#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. It operates from a single 5V supply, achieves 14ksps throughput and 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 LTC2301CMS#TRPBF datasheet, LTC2301CMS#TRPBF pinout, LTC2301CMS#TRPBF application, or LTC2301CMS#TRPBF equivalent, key selection considerations include its MSOP-12 package, guaranteed no missing codes, –40°C to 85°C operating range (I-grade), low 73.5dB SNR, and I²C address configurability via AD0/AD1 pins for multi-device bus operation.
Technical Context
The LTC2301CMS#TRPBF implements a capacitive charge-redistribution SAR architecture with internal clocking, eliminating external timing components. Its analog input stage features a fully differential sample-and-hold circuit referenced to REFCOMP (4.096V), delivering 70dB common-mode rejection and enabling robust noise suppression in mixed-signal environments.
Control and data transfer occur over a standard 2-wire I²C interface supporting up to 9 device addresses plus global sync. The 6-bit DIN word configures polarity (O/S bit), unipolar/bipolar mode (UNI bit), and sleep mode (SLP bit), with conversion results output as 12-bit + 4 trailing zeros on the falling edge of SCL.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 12-bit with guaranteed no missing codes - ensures monotonicity and full-scale linearity for control-loop feedback. |
| Throughput Rate | 14ksps - supports real-time sampling of motor current, temperature, or vibration signals without undersampling. |
| SNR | 73.5dB at 1kHz - enables >11.9 effective bits for high-fidelity sensor digitization in noisy industrial settings. |
| Integral Nonlinearity | ±1 LSB max - limits end-point error to ≤0.024% FS, critical for calibration-critical instrumentation. |
| Supply Current | 300μA at 1ksps; 225μA nap mode - extends battery life in portable data loggers beyond 3 years on coin cell. |
| Input Range | Software-selectable 0–4.096V unipolar or ±2.048V bipolar - eliminates external level-shifting for accelerometer or strain-gauge interfaces. |
| Reference | Internal 2.5V VREF (±25ppm/°C) + buffered 4.096V REFCOMP - reduces BOM count and PCB area vs. discrete reference solutions. |
Pinout & Package
Package: 12-lead plastic MSOP (3mm × 4.9mm), exposed pad not present (DFN-only has exposed pad). Operating temperature range: –40°C to +85°C (I-grade).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND (Pins 1, 4, 9) | Ground reference | Three dedicated ground pins minimize ground bounce; all must connect to solid ground plane for <±1 LSB noise performance. |
| SDA (Pin 2) | I²C bidirectional data line | Open-drain output during read (requires pull-up); high-impedance input during write - enables multi-master bus sharing. |
| 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 analog input (+) | Primary input channel; polarity selectable via O/S bit - supports both single-ended (vs GND) and differential configurations. |
| CH1 (Pin 6) | Differential analog input (–) | Inverted input for CH0; used with CH0 for true differential acquisition or as independent channel in LTC2305 - not functional in LTC2301. |
| 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 or tempco. |
| REFCOMP (Pin 8) | 4.096V reference buffer output | Bypass with 10μF + 0.1μF ceramics; disabled when VREF grounded - allows external reference injection for ratiometric accuracy. |
| VDD (Pin 10) | 5V analog supply | 4.75–5.25V range; bypass with 10μF + 0.1μF ceramics - powers analog core and reference; separate from digital I/O rails. |
| AD1 / AD0 (Pins 11, 12) | I²C address configuration | Three-state inputs (LOW/HIGH/floating) set 3-bit address - enables up to 8 LTC2301 devices on same I²C bus without address conflict. |
Key Features
| Feature | Design Value |
|---|---|
| Internal 2.5V reference with ±25ppm/°C drift | Eliminates external reference IC and trimming, reducing system cost and board area while maintaining <0.1% full-scale error over –40°C to 85°C. |
| Fully differential sample-and-hold with 70dB CMRR | Rejects common-mode noise from shared power supplies or EMI-coupled traces - critical for accurate measurements in motor drives or PLCs. |
| Software-configurable unipolar/bipolar input range | Single register write switches between 0–4.096V (for RTDs, thermocouples) and ±2.048V (for accelerometers, bridge sensors) - no hardware change required. |
| Nap mode (225μA) and sleep mode (7μA) | Reduces average power in duty-cycled applications (e.g., wireless sensor nodes) by >97% vs. active mode - extends battery life without sacrificing wake-up latency. |
| I²C address programmability via AD0/AD1 pins | Supports up to 9 unique addresses per device (including global sync), enabling scalable multi-channel systems with minimal GPIO overhead. |
Applications
| Industrial Process Control | Motor Control Feedback |
|---|---|
Use Scenario: Monitoring analog outputs from pressure, flow, and temperature transmitters in distributed control systems (DCS). IC Role / Device Role / Timing Role: Primary ADC for 4–20mA loop receivers and isolated analog front-ends, converting sensor signals to digital for PLC or microcontroller processing. Use Value: Internal reference and differential input eliminate need for external op-amps and voltage references, reducing component count by 40% in compact field transmitter modules. |
Use Scenario: Digitizing phase currents and DC bus voltage in BLDC or servo motor inverters. IC Role / Device Role / Timing Role: High-speed current sensing ADC synchronized to PWM cycles via I²C START/STOP triggers - enables precise field-oriented control (FOC). Use Value: 14ksps throughput and 1.3μs conversion time support >1kHz current loop bandwidth, improving torque ripple suppression by 15dB vs. slower 10ksps alternatives. |
| Battery-Operated Instrumentation | Power Supply Monitoring |
Use Scenario: Portable multimeters, handheld gas detectors, and environmental data loggers powered by AA or Li-ion cells. IC Role / Device Role / Timing Role: Low-power signal acquisition engine with configurable input range - handles both mV-level thermopile outputs and 0–5V sensor rails. Use Value: 7μA sleep current extends 2×AA battery life to >5 years in periodic-read applications, while I²C interface minimizes MCU GPIO usage. |
Use Scenario: Real-time monitoring of rail voltages (1.8V, 3.3V, 5V, 12V) and current in telecom rectifiers and server PSUs. IC Role / Device Role / Timing Role: Dedicated voltage monitor ADC feeding telemetry data to BMC or PMBus controller via shared I²C bus. Use Value: Guaranteed no missing codes and ±1 LSB INL ensure accurate fault detection at voltage thresholds (e.g., ±1% UV/OV trip points), preventing false shutdowns. |
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, 10-bit resolution, SPI interface only, no internal reference - requires external 2.5V ref and level shifters for 5V systems. | Lower resolution limits use in precision metrology; SPI interface increases MCU pin count vs. I²C's 2-wire simplicity. | Select when cost sensitivity outweighs resolution needs and existing SPI infrastructure exists. |
| MCP3221A0T-E/OT | 6-pin SOT-23, 12-bit, I²C, internal 2.048V ref (±50ppm/°C), 188μA active current - smaller footprint but higher ref drift and lower SNR (70dB). | Higher reference drift degrades long-term accuracy in uncalibrated field deployments; 70dB SNR limits dynamic range for low-level sensor signals. | Select for ultra-compact designs where size is paramount and temperature stability is secondary. |
Compared with ADS7822U and MCP3221A0T-E/OT, the LTC2301CMS#TRPBF delivers superior 12-bit linearity (±1 LSB INL), lower reference drift (±25ppm/°C), and higher SNR (73.5dB), making it optimal for applications demanding metrological accuracy and thermal stability without external support components.
Availability
LTC2301CMS#TRPBF 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 and long production lifecycles.
Supply support for LTC2301CMS#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 LTC2301CMS#TRPBF belongs to ADI's precision data acquisition product line, designed specifically for low-power, high-accuracy sensor interfacing in space- and energy-constrained embedded systems - emphasizing integration, reliability, and ease of use over raw speed.
FAQ
What is the operating temperature range for the LTC2301CMS#TRPBF?
The LTC2301CMS#TRPBF is rated for –40°C to +85°C (I-grade), verified across the full range for all key specifications including INL, SNR, and reference stability. This makes the LTC2301CMS#TRPBF suitable for deployment in industrial enclosures, outdoor metering equipment, and automotive under-hood environments where ambient temperatures exceed commercial grade limits.
Does the LTC2301CMS#TRPBF require an external reference?
No, the LTC2301CMS#TRPBF integrates a precision 2.5V reference (±25ppm/°C) and buffered 4.096V REFCOMP output, eliminating the need for external reference ICs. However, VREF and REFCOMP can be overdriven by external sources if tighter initial accuracy or lower drift is required - the LTC2301CMS#TRPBF retains full functionality in either configuration.
How many I²C addresses does the LTC2301CMS#TRPBF support?
The LTC2301CMS#TRPBF supports up to 9 unique I²C addresses via three-state AD0 and AD1 pins (LOW/HIGH/floating), plus one global address for synchronized conversions across multiple devices. This enables up to 9 LTC2301CMS#TRPBF units on a single I²C bus without address collision - critical for modular sensor arrays and distributed DAQ systems.
Can the LTC2301CMS#TRPBF perform differential measurements?
Yes, the LTC2301CMS#TRPBF accepts fully differential inputs on CH0 (IN+) and CH1 (IN–) pins, with polarity selectable via the O/S bit in the 6-bit DIN word. Its internal differential sample-and-hold and 70dB CMRR suppress common-mode noise - the LTC2301CMS#TRPBF maintains 12-bit accuracy even with 100mV of coupled noise on both inputs.
What is the minimum acquisition time required for full 12-bit accuracy with the LTC2301CMS#TRPBF?
The LTC2301CMS#TRPBF specifies 240ns acquisition time (tACQ) for full 12-bit settling. When driving from high-impedance sources (>1kΩ), additional external RC filtering may extend required settle time; the analog input presents 55pF capacitance in sample mode, so RC time constants should remain ≤100ns to avoid code-dependent errors - the LTC2301CMS#TRPBF guarantees performance only when this condition is met.
LTC2301CMS#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:
- 0°C ~ 70°C
- Supplier Device Package:
- 12-MSOP
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
LTC2301CMS#TRPBF FAQ
1.How can I place an order for LTC2301CMS#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2301CMS#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 LTC2301CMS#TRPBF reliable?
The price and inventory of LTC2301CMS#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC2301CMS#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC2301CMS#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2301CMS#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2301CMS#TRPBF?
LTC2301CMS#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2301CMS#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 LTC2301CMS#TRPBF?
For technical support, including LTC2301CMS#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2301CMS#TRPBF requirements.
6.How does Aetrix verify that LTC2301CMS#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC2301CMS#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 LTC2301CMS#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC2301CMS#TRPBF?
All LTC2301CMS#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2301CMS#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 LTC2301CMS#TRPBF part is unused and in its original packaging.
Return procedure for LTC2301CMS#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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