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Analog Devices Inc. LTC2301IDE#TRPBF
- Part No.:
- LTC2301IDE#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 12-WFDFN Exposed Pad
- Datasheet:
-
LTC2301IDE#TRPBF.pdf
- Description:
- IC ADC 12BIT SAR 12DFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,110
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Product details
Overview
LTC2301IDE#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 LTC2301IDE#TRPBF datasheet, LTC2301IDE#TRPBF pinout, LTC2301IDE#TRPBF application, or LTC2301IDE#TRPBF equivalent, key selection considerations include its guaranteed no-missing-codes performance, 73.5dB SNR at 1kHz, 14ksps throughput, –40°C to +85°C operating range, and DFN-12 (4mm × 3mm) package with exposed ground pad.
Technical Context
The LTC2301IDE#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 that rejects common-mode noise, and supports both single-ended and polarity-reversible differential configurations via software control of the O/S bit.
Communication occurs over a standard-mode/fast-mode I²C bus (up to 400kHz), with 9 programmable slave addresses plus global sync. The device uses a 6-bit DIN word to configure input mode (unipolar/bipolar), sleep state, and input polarity - all processed without interrupting conversion flow or requiring reinitialization.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 12-bit with guaranteed no missing codes - ensures monotonic transfer function for closed-loop control integrity. |
| SNR | 73.5dB at 1kHz - enables accurate measurement of low-amplitude signals in noisy environments. |
| Throughput Rate | 14ksps - supports real-time sampling of motor current, temperature ramps, or vibration spectra. |
| Integral Nonlinearity | ±1 LSB max - limits end-point calibration burden in high-accuracy instrumentation. |
| Supply Current | 300μA at 1ksps; 7μA in sleep mode - extends battery life in portable data loggers. |
| Input Range | Software-selectable 0–4.096V unipolar or ±2.048V bipolar - simplifies interface to diverse sensors without external level-shifting. |
| Reference | Internal 2.5V ±25ppm/°C reference with 4.096V buffered REFCOMP output - reduces BOM count and PCB area. |
Pinout & Package
Package: 12-lead (4mm × 3mm) plastic DFN with exposed GND pad (Pin 13), rated for –40°C to +85°C operation.
| 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; high-impedance input during write - requires external pull-up to VDD. |
| 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) | Analog input channel 0 | Configurable as IN+ or IN− depending on O/S bit setting - enables polarity reversal for differential measurements. |
| CH1 (Pin 6) | Analog input channel 1 | Not used in LTC2301; reserved pin - must be connected to GND or left floating per layout guidelines. |
| 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 range; bypass with 10μF + 0.1μF ceramics - powers analog core and reference circuits. |
| AD1 / AD0 (Pins 11, 12) | I²C address bits | Three-state inputs (LOW/HIGH/floating) set one of nine slave addresses - enables multi-device I²C bus configuration. |
| GND (Pin 13) | Exposed thermal pad | Mandatory solder connection to PCB ground plane - critical for thermal dissipation and EMI suppression. |
Key Features
| Feature | Design Value |
|---|---|
| Fully differential sample-and-hold | Reduces common-mode noise up to 70dB, enabling reliable measurements in electrically noisy industrial settings. |
| Software-configurable input polarity | O/S bit toggles CH0/CH1 polarity on-the-fly between conversions - eliminates need for external multiplexers in bidirectional sensing. |
| Internal 2.5V reference with 4.096V buffer | Eliminates external reference IC and associated passive components, reducing total solution size by >30%. |
| 14ksps throughput with 1.3μs conversion | Supports real-time capture of transient events such as power-line surges or mechanical impacts without pipeline latency. |
| Guaranteed operation from –40°C to +85°C | Validated across full industrial temperature range - suitable for deployment in motor drives, outdoor sensors, and factory automation. |
Applications
| Industrial Process Control | Motor Control Feedback |
|---|---|
|
Use Scenario: Monitoring analog outputs from pressure, temperature, and flow transmitters in PLC I/O modules. IC Role / Device Role / Timing Role: Primary analog-to-digital converter acquiring sensor data at 1–10ksps with calibrated 12-bit resolution. Use Value: Internal reference and no-missing-codes guarantee eliminate field recalibration; I²C interface simplifies microcontroller integration in dense backplane designs. |
Use Scenario: Sampling current-sense amplifier outputs and position encoder signals in servo drive feedback loops. IC Role / Device Role / Timing Role: High-fidelity acquisition of bidirectional motor current waveforms with sub-LSB offset stability. Use Value: Bipolar input mode directly accepts ±2.048V differential signals from isolated amplifiers; 73.5dB SNR preserves torque control resolution. |
| Battery-Powered Instrumentation | Isolated Data Acquisition |
|
Use Scenario: Portable multimeters and handheld environmental monitors requiring long battery life and compact form factor. IC Role / Device Role / Timing Role: Low-power ADC managing sensor reads during wake cycles while consuming only 7μA in sleep mode. Use Value: 300μA active current at 1ksps and DFN-12 footprint enable >1-year operation on coin-cell batteries in intermittent-read applications. |
Use Scenario: Remote sensor nodes transmitting analog data across opto-isolated or transformer-coupled links. IC Role / Device Role / Timing Role: Signal conditioning front-end converting isolated analog signals to digital before isolation barrier transmission. Use Value: Differential input structure rejects ground loop noise; I²C compatibility allows direct interface to isolated microcontrollers without level shifters. |
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; no internal reference; SPI interface only | Lower accuracy, higher board space, requires external reference and SPI host - unsuitable for I²C-only systems | Select only if cost sensitivity outweighs resolution and interface requirements. |
| MAX11603EEE+ | 10-pin μMAX; 12-bit; internal reference; SPI interface; 10ksps max | Slower throughput, different serial protocol, smaller package - needs firmware rewrite and layout revision | Consider only when existing SPI infrastructure exists and 4ksps lower speed is acceptable. |
Compared with ADS7822U and MAX11603EEE+, the LTC2301IDE#TRPBF delivers superior SNR (73.5dB vs ≤70dB), native I²C support eliminating protocol translation, and integrated reference saving two passives - making it optimal for new designs prioritizing accuracy, integration, and ease of use.
Availability
LTC2301IDE#TRPBF is available at Aetrix Electronics and suitable for industrial process control, motor control feedback, and battery-powered instrumentation requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for LTC2301IDE#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 industrial, automotive, communications, and healthcare markets.
The LTC2301IDE#TRPBF belongs to ADI's precision SAR ADC product line, designed specifically for low-power, space-constrained applications demanding high DC accuracy, low noise, and simple digital interfacing in harsh environments.
FAQ
What is the operating temperature range of the LTC2301IDE#TRPBF?
The LTC2301IDE#TRPBF is specified for operation from –40°C to +85°C, validated across the full range for all key parameters including INL, SNR, and reference stability. This makes LTC2301IDE#TRPBF suitable for deployment in industrial enclosures, outdoor sensor housings, and automotive under-hood auxiliary systems where ambient temperatures exceed commercial-grade limits.
Does the LTC2301IDE#TRPBF require an external reference?
No, the LTC2301IDE#TRPBF integrates a precision 2.5V reference with ±25ppm/°C tempco and a buffered 4.096V REFCOMP output. External references are optional - the VREF pin can be overdriven to substitute a higher-accuracy or lower-noise source, but is not required for basic operation. LTC2301IDE#TRPBF achieves full 12-bit performance using its internal reference.
How many I²C addresses does the LTC2301IDE#TRPBF support?
The LTC2301IDE#TRPBF supports nine unique I²C slave addresses via three-state configuration of AD0 and AD1 pins (LOW/HIGH/floating), plus one global address for synchronized wake-up or broadcast commands. This enables up to nine LTC2301IDE#TRPBF devices on a single I²C bus without address conflict - ideal for multi-channel sensor arrays.
Can the LTC2301IDE#TRPBF measure differential signals?
Yes, the LTC2301IDE#TRPBF supports true differential input acquisition via its CH0 and CH1 pins, configured using the O/S bit in the 6-bit DIN command. When O/S = 0, CH0 is IN+ and CH1 is IN−; when O/S = 1, polarity reverses. This allows bidirectional current sensing or bridge-based transducer readout without external op-amps - a core capability of LTC2301IDE#TRPBF.
What is the maximum sampling rate of the LTC2301IDE#TRPBF?
The LTC2301IDE#TRPBF achieves a maximum throughput rate of 14ksps in successive-read mode, with a fixed 1.3μs conversion time per sample. This rate is sustained across the full temperature range and independent of I²C bus speed - the internal clock ensures deterministic timing. LTC2301IDE#TRPBF maintains 73.5dB SNR even at 14ksps, supporting dynamic signal analysis in real time.
LTC2301IDE#TRPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 12-WFDFN Exposed Pad
- 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 ~ 85°C
- Supplier Device Package:
- 12-DFN (4x3)
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
LTC2301IDE#TRPBF FAQ
1.How can I place an order for LTC2301IDE#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2301IDE#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 LTC2301IDE#TRPBF reliable?
The price and inventory of LTC2301IDE#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC2301IDE#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC2301IDE#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2301IDE#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2301IDE#TRPBF?
LTC2301IDE#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2301IDE#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 LTC2301IDE#TRPBF?
For technical support, including LTC2301IDE#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2301IDE#TRPBF requirements.
6.How does Aetrix verify that LTC2301IDE#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC2301IDE#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 LTC2301IDE#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC2301IDE#TRPBF?
All LTC2301IDE#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2301IDE#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 LTC2301IDE#TRPBF part is unused and in its original packaging.
Return procedure for LTC2301IDE#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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