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Analog Devices Inc. LTC2453CDDB#TRPBF
- Part No.:
- LTC2453CDDB#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 8-WFDFN Exposed Pad
- Datasheet:
-
LTC2453CDDB#TRPBF.pdf
- Description:
- IC ADC 16BIT SIGMA-DELTA 8DFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,912
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Product details
Overview
LTC2453CDDB#TRPBF from Analog Devices (formerly Linear Technology) is a fully differential, 16-bit delta-sigma analog-to-digital converter with I²C interface, operating from 2.7V to 5.5V supply, delivering 60 conversions per second, ±2 LSB offset error, and 0.2 µA sleep current in an 8-pin 3 mm × 2 mm DFN package. It is used for precision system monitoring and embedded sensor digitization where low power and minimal external components are critical.
For engineers reviewing the LTC2453CDDB#TRPBF datasheet, LTC2453CDDB#TRPBF pinout, LTC2453CDDB#TRPBF application, or LTC2453CDDB#TRPBF equivalent, key selection criteria include its differential input architecture, integrated oscillator eliminating external timing components, guaranteed no missing codes, continuous internal calibration, and ultra-low input sampling current (50 nA) enabling direct RC filtering without signal degradation.
Technical Context
The LTC2453CDDB#TRPBF employs a delta-sigma modulator core with a decimating sinc filter and proprietary input sampling scheme that reduces average input current to 50 nA while maintaining negligible inter-pin leakage. Its conversion cycle comprises three deterministic states-CONVERSION, SLEEP, and DATA OUTPUT-with automatic transition to sub-0.2 µA sleep mode after each result is latched.
It uses a hard-wired I²C slave address (0010100), supports Standard- and Fast-Mode up to 400 kHz, and delivers a 16-bit signed output (D15 = sign bit) with no latency or filter settling delay. Internal offset and full-scale calibration run continuously and transparently across temperature (0°C to 70°C operating range for C-grade).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 16-bit signed, no missing codes - ensures monotonicity and unambiguous representation of all input levels within ±FS range. |
| Differential Input Range | ±(VREF+ − VREF−), up to ±VCC - supports rail-to-rail differential sensing with flexible reference configuration. |
| Conversion Rate | 60 conversions/second - enables real-time monitoring of slow-varying signals (e.g., temperature, pressure) without oversampling burden. |
| Offset Error | ±2 LSB max - limits zero-input error to <0.03% of full scale at 3V reference, critical for baseline accuracy in instrumentation. |
| Sleep Current | 0.2 µA max - allows battery-powered operation for years when read infrequently (e.g., once per second yields <50 µW avg. power at 2.7V). |
| Input Sampling Current | 50 nA typical - permits use of high-impedance RC filters (e.g., 1 kΩ + 0.1 µF) with <1 LSB added error, simplifying front-end design. |
| Integral Nonlinearity | ±10 LSB max - defines worst-case deviation from ideal transfer curve, directly impacting end-point accuracy in calibrated systems. |
Pinout & Package
Package: 8-lead plastic DFN (3 mm × 2 mm), exposed pad (Pin 9) connected to GND. RoHS-compliant, lead-free finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND (Pin 1) | Ground reference | Primary return path for analog/digital supplies; must connect to low-impedance ground plane. |
| REF– (Pin 2) | Negative reference input | Differential reference node; sets lower bound of input range; voltage must be ≥0 V and ≤(VREF+ − 2.5 V). |
| REF+ (Pin 3) | Positive reference input | Differential reference node; sets upper bound of input range; voltage must be ≤VCC and > (REF– + 2.5 V). |
| VCC (Pin 4) | Supply voltage input | Single 2.7V–5.5V analog/digital supply; requires local 10 µF + 0.1 µF ceramic decoupling. |
| IN– (Pin 5) | Negative analog input | Differential input terminal; accepts voltage between REF– and REF+; exhibits <10 nA DC leakage. |
| IN+ (Pin 6) | Positive analog input | Differential input terminal; accepts voltage between REF– and REF+; exhibits <10 nA DC leakage. |
| SCL (Pin 7) | I²C clock input | Slave-only interface clock; accepts up to 400 kHz; rising edge samples data, falling edge outputs data. |
| SDA (Pin 8) | I²C bidirectional data line | Open-drain output during data transfer; requires external pull-up resistor (typically 1.7 kΩ to VCC). |
Key Features
| Feature | Design Value |
|---|---|
| Integrated oscillator | Eliminates need for external crystal or clock source - reduces BOM count and layout area in space-constrained designs. |
| Single-cycle conversion with auto shutdown | Each conversion completes in 13–23 ms then enters <0.2 µA sleep - enables deterministic power budgeting in duty-cycled systems. |
| Continuous internal calibration | Performs offset and full-scale correction before every conversion - maintains accuracy over time and temperature without user intervention. |
| No latency multiplexed operation | Delivers valid data immediately after conversion with no pipeline delay - supports true time-division multiplexing of multiple sensors. |
| Ultra-low input sampling current | 50 nA average draw from IN+/IN– - allows direct connection to high-impedance sources (e.g., thermistors, strain gauges) without buffer amplifiers. |
Applications
| System Monitoring | Environmental Monitoring |
|---|---|
Use Scenario: Real-time tracking of supply rail voltages, board temperature, and fan status in industrial PLCs and telecom equipment. IC Role / Device Role / Timing Role: Precision ADC capturing differential sensor outputs and rail margins with 16-bit resolution and no missing codes. Use Value: Enables early fault detection via sub-millivolt-level drift analysis, supported by continuous calibration and <2 LSB offset error. | Use Scenario: Battery-powered air quality nodes measuring CO₂, humidity, and ambient temperature in smart buildings. IC Role / Device Role / Timing Role: Low-power differential ADC interfacing with electrochemical and capacitive sensors using single 3V supply. Use Value: Achieves multi-year battery life via 0.2 µA sleep current and <50 µW average power at 1 Hz read rate. |
| Direct Temperature Measurements | Industrial Process Control |
Use Scenario: High-accuracy RTD or thermocouple signal conditioning in HVAC controllers and lab instruments. IC Role / Device Role / Timing Role: Differential ADC rejecting common-mode noise from long sensor leads while digitizing microvolt-level thermal EMFs. Use Value: Delivers <10 LSB INL and 80 dB PSRR to preserve signal integrity in electrically noisy factory environments. | Use Scenario: Closed-loop feedback acquisition in motor drives and valve positioners requiring stable analog feedback under EMI stress. IC Role / Device Role / Timing Role: Embedded ADC providing isolated, calibrated current/voltage feedback to microcontroller ADC inputs. Use Value: Guarantees monotonic response and no missing codes across –40°C to +70°C, ensuring safe control loop behavior. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 16-bit differential ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADS1115IDGSR | 4-channel, programmable gain amplifier (PGA); 860SPS max; 15-bit ENOB; no internal oscillator - requires external clock or MCU timing. | Supports multi-channel scanning and gain scaling; better suited for mixed-signal sensor hubs than single-channel precision monitoring. | Select ADS1115IDGSR when channel count or PGA flexibility outweighs need for lowest quiescent current and autonomous timing. |
| MCP3424-E/SL | 4-channel, 18-bit sigma-delta; 15SPS max; 2.7–5.5V supply; 1 µA sleep current; I²C interface; no internal oscillator. | Higher resolution but slower throughput; lacks overrange/underrange capability (31 LSB total) and proprietary low-leakage input architecture. | Select MCP3424-E/SL when absolute resolution > speed, and when external clock synchronization is acceptable. |
Compared with ADS1115IDGSR and MCP3424-E/SL, the LTC2453CDDB#TRPBF uniquely combines autonomous 60 SPS operation, 50 nA input current, and continuous calibration in a 3×2 mm DFN - making it optimal for space- and power-constrained single-channel precision sensing where timing simplicity and input drive ease are prioritized.
Availability
LTC2453CDDB#TRPBF is available at Aetrix Electronics and suitable for system monitoring, environmental sensing, and industrial process control applications requiring stable component supply, guaranteed C-grade temperature performance (0°C to 70°C), and long-term production continuity.
Supply support for LTC2453CDDB#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 LTC2453CDDB#TRPBF belongs to ADI's ultra-low-power precision delta-sigma ADC product line, designed specifically for embedded sensor interfaces where minimal external components, guaranteed monotonicity, and autonomous calibration are required in compact form factors.
FAQ
What is the operating temperature range for the LTC2453CDDB#TRPBF?
The LTC2453CDDB#TRPBF is specified for the commercial grade temperature range of 0°C to 70°C. This is confirmed by the "C" suffix in the part number and the order information table listing "0°C to 70°C" for LTC2453CDDB#TRPBF. The device's electrical characteristics-including offset error drift (0.02 LSB/°C) and gain error drift-are guaranteed over this full range.
Does the LTC2453CDDB#TRPBF require external clock components?
No, the LTC2453CDDB#TRPBF does not require external clock components. It integrates a precision internal oscillator that drives the delta-sigma modulator and I²C timing logic. This eliminates the need for crystals, resonators, or external clock generators-reducing bill-of-materials cost and PCB area while improving reliability in vibration-prone environments.
What is the I²C address of the LTC2453CDDB#TRPBF?
The LTC2453CDDB#TRPBF has a fixed, hard-wired I²C slave address of 0010100 (0x24 in 7-bit format). This address is non-configurable and applies to all variants in the LTC2453 family. The device only responds to read requests (R=1) and issues ACK on SDA after address match when conversion is complete.
How does the LTC2453CDDB#TRPBF handle input overrange and underrange conditions?
The LTC2453CDDB#TRPBF provides a total of 31 LSB of combined overrange and underrange capability beyond the nominal ±FS range. For example, with a 5V reference, it can correctly digitize inputs up to ~8 LSB below REF– or above REF+, enabling robust measurement of signals near or slightly outside rails-such as thermocouple cold-junction offsets or sensor bias excursions-without clipping.
What decoupling capacitors are recommended for the LTC2453CDDB#TRPBF VCC pin?
The LTC2453CDDB#TRPBF requires two parallel capacitors at the VCC pin: a 0.1 µF high-quality ceramic capacitor placed closest to the package, and a 10 µF ceramic capacitor located nearby. Both must connect directly between VCC and GND with minimal trace length and no vias in the loop. This dual-capacitor network suppresses both high-frequency switching noise and low-frequency supply droop to preserve 16-bit accuracy.
LTC2453CDDB#TRPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 8-WFDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Number of Bits:
- 16
- Sampling Rate (Per Second):
- 60
- Number of Inputs:
- 1
- Input Type:
- Differential
- Data Interface:
- I2C
- Configuration:
- ADC
- Ratio - S/H:ADC:
- -
- Number of A/D Converters:
- 1
- Architecture:
- Sigma-Delta
- Reference Type:
- External
- Voltage - Supply, Analog:
- 2.7V ~ 5.5V
- Voltage - Supply, Digital:
- 2.7V ~ 5.5V
- Features:
- -
- Operating Temperature:
- 0°C ~ 70°C
- Supplier Device Package:
- 8-DFN (3x2)
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
LTC2453CDDB#TRPBF FAQ
1.How can I place an order for LTC2453CDDB#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2453CDDB#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 LTC2453CDDB#TRPBF reliable?
The price and inventory of LTC2453CDDB#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC2453CDDB#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC2453CDDB#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2453CDDB#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2453CDDB#TRPBF?
LTC2453CDDB#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2453CDDB#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 LTC2453CDDB#TRPBF?
For technical support, including LTC2453CDDB#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2453CDDB#TRPBF requirements.
6.How does Aetrix verify that LTC2453CDDB#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC2453CDDB#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 LTC2453CDDB#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC2453CDDB#TRPBF?
All LTC2453CDDB#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2453CDDB#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 LTC2453CDDB#TRPBF part is unused and in its original packaging.
Return procedure for LTC2453CDDB#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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