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Analog Devices Inc. LTC2301CDE#TRPBF
- Part No.:
- LTC2301CDE#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 12-WFDFN Exposed Pad
- Datasheet:
-
LTC2301CDE#TRPBF.pdf
- Description:
- IC ADC 12BIT SAR 12DFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,962
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Product details
Overview
LTC2301CDE#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 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 LTC2301CDE#TRPBF datasheet, LTC2301CDE#TRPBF pinout, LTC2301CDE#TRPBF application, or LTC2301CDE#TRPBF equivalent, key selection considerations include its 12-bit no-missing-codes performance, 73.5dB SNR at 1kHz, 14ksps throughput, I²C address configurability via AD0/AD1 pins, and operation across 0°C to 70°C in a 12-lead 4mm × 3mm DFN package.
Technical Context
The LTC2301CDE#TRPBF implements a capacitive charge-redistribution SAR architecture with internal 2.5V reference and buffered 4.096V REFCOMP output. Its analog input stage features 55pF sampling capacitance and 100Ω series resistance, enabling precise differential acquisition with 240ns acquisition time and 700kHz full linear bandwidth.
Control and data transfer occur over a standard-mode/fast-mode I²C interface (up to 400kHz), supporting nine configurable slave addresses plus global sync. The device uses a 6-bit DIN word to configure polarity (O/S bit), unipolar/bipolar mode (UNI bit), and sleep mode (SLP bit), with conversion initiated by STOP condition and result output on falling SCL edges.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 12-bit with guaranteed no missing codes - ensures monotonicity and deterministic code transitions across full temperature range. |
| Conversion Time | 1.3μs - enables high-speed sampling without external timing circuitry; supports up to 14ksps sustained throughput. |
| SNR | 73.5dB at fIN = 1kHz - delivers >12-bit effective resolution for low-noise sensor signal conditioning. |
| Integral Nonlinearity | ±1 LSB max - limits end-point error to ≤0.024% of full scale, critical for calibration-sensitive measurement systems. |
| Supply Current | 300μA at 1ksps, 225μA in nap mode - enables battery-powered operation with minimal quiescent power penalty. |
| Input Range | Software-selectable 0V–4.096V (unipolar) or ±2.048V (bipolar) - simplifies interface to diverse transducer outputs without external level-shifting. |
| I²C Address Pins | AD0 and AD1 support three-state (LOW/HIGH/floating) configuration - provides 9 unique addresses for multi-device bus systems. |
Pinout & Package
Package: 12-lead (4mm × 3mm) plastic DFN with exposed pad (Pin 13 = GND). Requires soldering of exposed pad to PCB ground plane for thermal and electrical integrity (θJA = 43°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND (Pins 1, 4, 9) | Ground reference | Multiple dedicated ground connections reduce ground bounce and improve noise immunity in mixed-signal layouts. |
| SDA (Pin 2) | I²C bidirectional data line | Open-drain output during read; high-impedance input during write - requires external pull-up to VDD for proper bus operation. |
| SCL (Pin 3) | I²C clock input | Slave-only interface; data latched on rising edge, shifted out on falling edge - compatible with standard microcontroller I²C peripherals. |
| CH0 (Pin 5) | Differential analog input (+) | Configurable as IN+ in differential mode or single-ended input relative to GND - supports flexible sensor connection topologies. |
| CH1 (Pin 6) | Differential analog input (–) | Paired with CH0 for true differential acquisition; common-mode rejection ≥70dB reduces noise coupling in noisy environments. |
| VREF (Pin 7) | 2.5V internal reference output | Bypass with ≥2.2μF ceramic capacitor; may be overdriven by external 2.5V source for improved stability or accuracy. |
| REFCOMP (Pin 8) | 4.096V reference buffer output | Bypass with 10μF + 0.1μF parallel ceramics; disabled when VREF is grounded - enables external reference substitution. |
| VDD (Pin 10) | 5V analog supply | Operates from 4.75V–5.25V; bypass with 10μF + 0.1μF ceramics to suppress supply noise affecting reference and analog core. |
| AD1 (Pin 11) | I²C address control bit | Three-state logic (LOW/HIGH/floating) sets MSB of 7-bit slave address - enables up to 9 devices on same I²C bus. |
| AD0 (Pin 12) | I²C address control bit | Three-state logic (LOW/HIGH/floating) sets LSB of 7-bit slave address - works with AD1 to define full address mapping. |
| GND (Pin 13) | Exposed pad ground | Mandatory solder connection to PCB ground plane - essential for thermal dissipation and low-impedance analog return path. |
Key Features
| Feature | Design Value |
|---|---|
| Fully differential sample-and-hold | Rejects common-mode noise on CH0/CH1 inputs, enabling accurate measurements in electrically noisy industrial environments. |
| Internal 2.5V reference + 4.096V REFCOMP buffer | Eliminates need for external reference ICs and associated layout area, reducing BOM count and board space in compact designs. |
| Software-configurable unipolar/bipolar input range | Single register write switches between 0–4.096V and ±2.048V full-scale ranges - avoids hardware rework for different sensor types. |
| Nap and sleep power modes | Reduces current to 225μA (nap) or 7μA (sleep) - extends battery life in portable instrumentation without sacrificing wake-up latency. |
| I²C address flexibility via AD0/AD1 pins | Supports 9 unique addresses using three-state logic - allows daisy-chaining multiple LTC2301CDE#TRPBF units on one bus without address conflicts. |
| Guaranteed operation from –40°C to 125°C (MSOP variant) | This C-grade DFN variant is rated 0°C to 70°C, but shares same robust process - suitable for commercial and light industrial ambient conditions. |
Applications
| Industrial Process Control | Motor Control Feedback |
|---|---|
Use Scenario: Monitoring analog outputs from pressure, temperature, and flow sensors in PLC-based control cabinets. IC Role / Device Role / Timing Role: Primary 12-bit digitizer for analog sensor signals, interfacing directly to microcontroller I²C bus. Use Value: Internal reference and differential input eliminate external op-amps and voltage references, reducing component count and calibration complexity. |
Use Scenario: Sampling current-sense amplifier outputs and position encoder signals in closed-loop servo drives. IC Role / Device Role / Timing Role: High-fidelity analog front-end for real-time current and position feedback acquisition. Use Value: 73.5dB SNR and 14ksps throughput enable accurate torque estimation and smooth velocity regulation at high PWM frequencies. |
| Battery-Operated Instruments | Power Supply Monitoring |
Use Scenario: Portable multimeters, handheld environmental monitors, and field calibration tools powered by Li-ion batteries. IC Role / Device Role / Timing Role: Low-power ADC subsystem handling sensor excitation, signal conditioning, and digital conversion. Use Value: 7μA sleep current and fast wake-up (<200ms REFCOMP settling) maximize runtime between charges without compromising measurement readiness. |
Use Scenario: Real-time monitoring of rail voltages (3.3V, 5V, 12V) and current sense in telecom and server power supplies. IC Role / Device Role / Timing Role: Precision voltage digitizer feeding telemetry data to system management controllers (SMCs). Use Value: ±1 LSB INL and software-selectable input range allow direct connection to resistor-divider networks without trimming or gain adjustment. |
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, SPI interface only, no internal reference - requires external 2.5V ref and level-shifting for 3.3V hosts. | Lower pin count but incompatible bus protocol; unsuitable for I²C-only systems or space-constrained layouts requiring DFN. | Select if SPI interface is preferred and external reference is already available; avoid when I²C compatibility or integrated reference is required. |
| MAX11603EEE+ | 10-bit resolution, 12-pin μMAX package, 3.3V supply only, ±0.5 LSB INL - lower accuracy and narrower voltage range. | Targeted at cost-sensitive, lower-precision applications; lacks bipolar input mode and REFCOMP buffer. | Choose for budget-limited designs where 12-bit performance and 4.096V reference buffering are not mandatory. |
Compared with ADS7822U and MAX11603EEE+, the LTC2301CDE#TRPBF delivers superior 12-bit linearity, integrated dual-reference architecture, and native I²C support - making it optimal for precision, low-power, and space-constrained measurement systems requiring minimal external components.
Availability
LTC2301CDE#TRPBF is available at Aetrix Electronics and suitable for industrial process control, motor control feedback, and battery-operated instrumentation requiring stable component supply and long-term production continuity.
Supply support for LTC2301CDE#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 LTC2301CDE#TRPBF belongs to ADI's legacy Linear Technology precision data acquisition family, designed specifically for low-power, high-accuracy sensor interfacing in space- and energy-constrained embedded systems.
FAQ
What is the operating temperature range for the LTC2301CDE#TRPBF?
The LTC2301CDE#TRPBF is specified for operation from 0°C to 70°C. This commercial-grade temperature range is validated per the manufacturer's datasheet and applies to the 12-lead DFN package variant marked "C" in the ordering code. It is not rated for extended industrial or automotive temperature ranges - those require the "I" or "H" grade variants in MSOP packages.
Does the LTC2301CDE#TRPBF support differential input configurations?
Yes, the LTC2301CDE#TRPBF supports true differential input acquisition using CH0 (Pin 5) as IN+ and CH1 (Pin 6) as IN–. Its internal fully differential sample-and-hold circuit provides ≥70dB common-mode rejection, and polarity can be inverted via the O/S bit in the 6-bit DIN configuration word - enabling flexible sensor interface without external amplifiers.
How does the internal reference system work in the LTC2301CDE#TRPBF?
The LTC2301CDE#TRPBF integrates a 2.5V bandgap reference (VREF, Pin 7) and a buffered 4.096V output (REFCOMP, Pin 8) derived from it. VREF may be overdriven by an external 2.5V source; grounding VREF disables the internal buffer, allowing REFCOMP to be driven externally - providing design flexibility for enhanced accuracy or noise immunity in critical applications.
Can the LTC2301CDE#TRPBF operate from a 3.3V supply?
No, the LTC2301CDE#TRPBF requires a 4.75V to 5.25V analog supply (VDD, Pin 10) and is not 3.3V-compatible. Its I²C interface accepts 2.85V minimum VIH and 1.5V maximum VIL, so level-shifting is required when interfacing with 3.3V microcontrollers - but the core ADC and reference circuits must be powered from 5V.
What is the purpose of the AD0 and AD1 pins on the LTC2301CDE#TRPBF?
The AD0 and AD1 pins on the LTC2301CDE#TRPBF are three-state I²C address configuration bits. Each pin accepts LOW, HIGH, or floating states to set two bits of the 7-bit slave address, enabling up to nine unique addresses on a shared I²C bus - essential for multi-sensor systems without address collisions or external address jumpers.
LTC2301CDE#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:
- 0°C ~ 70°C
- Supplier Device Package:
- 12-DFN (4x3)
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
LTC2301CDE#TRPBF FAQ
1.How can I place an order for LTC2301CDE#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2301CDE#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 LTC2301CDE#TRPBF reliable?
The price and inventory of LTC2301CDE#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC2301CDE#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC2301CDE#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2301CDE#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2301CDE#TRPBF?
LTC2301CDE#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2301CDE#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 LTC2301CDE#TRPBF?
For technical support, including LTC2301CDE#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2301CDE#TRPBF requirements.
6.How does Aetrix verify that LTC2301CDE#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC2301CDE#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 LTC2301CDE#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC2301CDE#TRPBF?
All LTC2301CDE#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2301CDE#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 LTC2301CDE#TRPBF part is unused and in its original packaging.
Return procedure for LTC2301CDE#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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