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Analog Devices Inc. LTC2301IDE#PBF
- Part No.:
- LTC2301IDE#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 12-WFDFN Exposed Pad
- Datasheet:
-
LTC2301IDE#PBF.pdf
- Description:
- IC ADC 12BIT SAR 12DFN
- Quantity:
- Payment:
- Shipping:
Inventory:160
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Product details
Overview
LTC2301IDE#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, delivers 73.5dB SNR, and supports software-selectable unipolar/bipolar input ranges - ideal for precision battery-powered sensor monitoring in industrial and portable systems.
For engineers reviewing the LTC2301IDE#PBF datasheet, LTC2301IDE#PBF pinout, LTC2301IDE#PBF application, or LTC2301IDE#PBF equivalent, key selection criteria include its 14ksps throughput, ±0.4 LSB integral nonlinearity, –40°C to +85°C operating range in DFN package, low 300μA active current, and I²C address configurability via AD0/AD1 pins.
Technical Context
The LTC2301IDE#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 that rejects common-mode noise and supports both unipolar (0V–4.096V) and bipolar (±2.048V) input configurations via software control.
Communication occurs over a standard 2-wire I²C bus with nine selectable slave addresses plus global sync, using open-drain SDA and Schmitt-triggered SCL. Conversion is initiated by STOP condition; data is output LSB-first on falling SCL edges, with no latency and four trailing zeros appended to the 12-bit result.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 12-bit with guaranteed no missing codes - ensures monotonic transfer function for closed-loop control stability. |
| Throughput Rate | 14 ksps - enables real-time sampling of motor current or vibration signals up to ~7 kHz Nyquist bandwidth. |
| SNR | 73.5 dB at 1 kHz - supports >11.5 effective bits for high-fidelity sensor digitization in noisy environments. |
| Integral Nonlinearity | ±0.4 LSB (typ) - limits gain/offset error to <0.1% FS, critical for calibrated measurement systems. |
| Supply Current | 300 μA at 1 ksps; 225 μA nap mode - extends battery life in portable instrumentation beyond 1 year at 100 Hz sampling. |
| Input Range | Software-selectable 0V–4.096V (unipolar) or ±2.048V (bipolar) - simplifies interface to diverse transducers without external level-shifting. |
| Reference | Internal 2.5 V ±25 ppm/°C - eliminates external reference IC, reducing BOM count and PCB area in space-constrained designs. |
Pinout & Package
The LTC2301IDE#PBF is housed in a 12-lead 4 mm × 3 mm plastic DFN package with exposed pad (Pin 13 = GND), optimized for thermal performance (θJA = 43°C/W) and compact layout.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND (Pins 1, 4, 9) | Ground reference | Multiple low-inductance ground connections required for noise immunity; all 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 - enables multi-drop bus configuration. |
| SCL (Pin 3) | I²C clock input | Slave-only interface; accepts external clock up to 400 kHz - compatible with standard microcontroller I²C peripherals. |
| CH0 (IN+) / CH1 (IN−) (Pins 5, 6) | Differential analog inputs | Fixed differential pair (IN+/IN−) - supports ratiometric measurements and rejection of EMI-coupled interference. |
| VREF (Pin 7) | 2.5 V reference output | Bypass with ≥2.2 μF ceramic capacitor; may be overdriven by external 2.5 V source for improved stability. |
| REFCOMP (Pin 8) | 4.096 V buffered reference output | Bypass with 10 μF + 0.1 μF ceramics; disabled when VREF grounded - enables external reference substitution. |
| VDD (Pin 10) | 5 V analog supply | 4.75 V–5.25 V operation; bypass with 10 μF + 0.1 μF ceramics - decouples switching noise from ADC core. |
| AD0 / AD1 (Pins 12, 11) | I²C address select bits | Three-state (LOW/HIGH/floating) configuration - selects one of nine device addresses for multi-sensor networks. |
Key Features
| Feature | Design Value |
|---|---|
| Internal 2.5 V reference with ±25 ppm/°C drift | Eliminates external reference component and associated layout complexity while maintaining <0.05% full-scale error over temperature. |
| Fully differential sample-and-hold with 70 dB CMRR | Rejects common-mode noise from shared power rails or EMI, enabling accurate measurements in electrically hostile industrial environments. |
| 14 ksps throughput with 1.3 μs conversion time | Supports real-time control loops requiring sub-100 μs response, such as digital power supply feedback or servo position correction. |
| Configurable unipolar/bipolar input range | Single firmware command switches between 0–4.096 V (e.g., RTD voltage) and ±2.048 V (e.g., accelerometer output), reducing design variants. |
| Nap mode (225 μA) and sleep mode (7 μA) | Enables adaptive power management: nap mode retains configuration while halving current; sleep mode cuts power for extended idle periods. |
Applications
| Industrial Process Control | Motor Control Feedback |
|---|---|
Use Scenario: Monitoring thermocouple or 4–20 mA loop outputs in PLC analog input modules. IC Role / Device Role / Timing Role: Precision 12-bit digitization of slow-varying process variables with internal reference stability. Use Value: Eliminates external reference and calibration drift compensation, reducing system-level error budget by ±0.02% FS over –40°C to +85°C. | Use Scenario: Sampling phase currents in BLDC motor drives for field-oriented control (FOC). IC Role / Device Role / Timing Role: High-speed differential acquisition synchronized to PWM cycles via I²C polling. Use Value: 14 ksps throughput captures current ripple at 20 kHz switching frequencies; 73.5 dB SNR ensures clean torque estimation. |
| Battery-Operated Instrumentation | Isolated Data Acquisition |
Use Scenario: Portable multimeter or handheld environmental sensor logger powered by two AA cells. IC Role / Device Role / Timing Role: Low-power ADC with software-configurable range for measuring voltage, temperature, and humidity. Use Value: 7 μA sleep current extends battery life to >2 years at 1 sample/minute; I²C interface minimizes MCU GPIO usage. | Use Scenario: Digitizing analog signals across galvanic isolation barriers in medical or energy metering systems. IC Role / Device Role / Timing Role: Isolated-side ADC interfaced to isolated I²C transceiver (e.g., ADuM1250). Use Value: Internal reference removes need for isolated reference transmission, reducing component count and creepage/clearance requirements. |
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 |
|---|---|---|---|
| ADS7822IDR | 8-pin SOIC, SPI interface only, no internal reference, requires external 2.5 V ref, 12-bit, 200 ksps | Higher speed but demands additional reference IC and SPI-capable host; less suitable for I²C-only microcontrollers | Select when maximum throughput >14 ksps is required and board space allows external reference. |
| MCP3221A0T-E/OT | SOT-23-6, I²C interface, internal 2.048 V ref, 12-bit, 22.3 ksps, ±1 LSB INL (max) | Smaller footprint and lower cost, but higher INL and narrower temp range (–40°C to +125°C not guaranteed) | Select for cost-sensitive, space-constrained consumer applications where ±1 LSB linearity is acceptable. |
Compared with ADS7822IDR and MCP3221A0T-E/OT, the LTC2301IDE#PBF offers superior DC accuracy (±0.4 LSB INL), integrated 4.096 V buffered reference (REFCOMP), and robust industrial temperature grading - making it optimal for calibrated measurement systems demanding long-term stability.
Availability
LTC2301IDE#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 LTC2301IDE#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, 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 LTC2301IDE#PBF belongs to ADI's precision SAR ADC product line, designed specifically for low-power, high-accuracy data acquisition in space- and energy-constrained systems where I²C simplicity and internal reference integration reduce system complexity.
FAQ
What is the operating temperature range of the LTC2301IDE#PBF?
The LTC2301IDE#PBF is rated for operation from –40°C to +85°C, validated across the full range for key parameters including integral nonlinearity (±0.4 LSB typ), supply current (225 μA nap mode), and reference stability (±25 ppm/°C). This makes LTC2301IDE#PBF suitable for deployment in harsh industrial environments without derating.
Does the LTC2301IDE#PBF require an external reference?
No, the LTC2301IDE#PBF integrates a precision 2.5 V reference (VREF) and a buffered 4.096 V reference (REFCOMP), eliminating the need for external reference components. The internal references are specified over temperature and support both unipolar and bipolar input ranges - a key advantage of LTC2301IDE#PBF in minimizing BOM and layout complexity.
How many I²C addresses does the LTC2301IDE#PBF support?
The LTC2301IDE#PBF supports nine unique I²C slave addresses via three-state configuration of AD0 and AD1 pins (LOW/HIGH/floating), plus one global address for synchronization. This enables up to nine LTC2301IDE#PBF devices on a single I²C bus without address conflict - essential for multi-sensor nodes in industrial monitoring systems.
What is the acquisition time requirement for the LTC2301IDE#PBF?
The LTC2301IDE#PBF specifies a minimum acquisition time (tACQ) of 240 ns, measured from the end of conversion to the start of the next sample. This short acquisition window allows high-throughput operation at 14 ksps while maintaining 12-bit accuracy, provided the analog source impedance is ≤1 kΩ and input filtering RC time constant is <100 ns.
Can the LTC2301IDE#PBF operate in differential or single-ended mode?
The LTC2301IDE#PBF is configured exclusively for differential input (IN+/IN−) per its datasheet and pinout. Unlike the 2-channel LTC2305, it does not support single-ended channel selection. However, its differential architecture provides inherent common-mode noise rejection - a core design strength of LTC2301IDE#PBF for precision measurement applications.
LTC2301IDE#PBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 12-WFDFN Exposed Pad
- 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 ~ 85°C
- Supplier Device Package:
- 12-DFN (4x3)
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
LTC2301IDE#PBF FAQ
1.How can I place an order for LTC2301IDE#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2301IDE#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 LTC2301IDE#PBF reliable?
The price and inventory of LTC2301IDE#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC2301IDE#PBF is usually 5 days.
3.What payment methods are accepted for LTC2301IDE#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2301IDE#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2301IDE#PBF?
LTC2301IDE#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2301IDE#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 LTC2301IDE#PBF?
For technical support, including LTC2301IDE#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2301IDE#PBF requirements.
6.How does Aetrix verify that LTC2301IDE#PBF is sourced from the original manufacturer or authorized distributors?
All LTC2301IDE#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 LTC2301IDE#PBF meets industry standards.
7.What is the process for return or replacement of LTC2301IDE#PBF?
All LTC2301IDE#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2301IDE#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 LTC2301IDE#PBF part is unused and in its original packaging.
Return procedure for LTC2301IDE#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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