My Inquiry
My Account
Analog Devices Inc. DC1266A-A
- Part No.:
- DC1266A-A
- Manufacturer:
- Analog Devices Inc.
- Package:
- Datasheet:
-
DC1266A-A.pdf
- Description:
- BOARD DELTA SIGMA ADC LTC2453
- Quantity:
- Payment:
- Shipping:
Inventory:3,389
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LTC2453 from Analog Devices (acquired Linear Technology) is a fully differential, 16-bit delta-sigma analog-to-digital converter with I²C interface, ±(VREF⁺–VREF⁻) input range, 60 sps conversion rate, and integrated oscillator. It operates from 2.7V to 5.5V and targets precision sensor signal acquisition in space-constrained industrial monitoring systems.
For engineers reviewing the LTC2453 datasheet, LTC2453 pinout, LTC2453 application, or LTC2453 equivalent, key selection considerations include its ultra-low 50 nA average input sampling current, no-latency single-cycle output, auto-sleep mode (<0.2 µA), internal offset/full-scale calibration, and dual-package availability (3 mm × 2 mm DFN / 3 mm × 3 mm TSOT-23).
Technical Context
The LTC2453 employs a proprietary delta-sigma modulator core with decimating sinc filter and continuous internal offset and full-scale calibration-transparent to the user and effective across –40°C to +85°C. Its input sampling architecture reduces average input current by orders of magnitude versus conventional delta-sigma ADCs.
It features a hard-wired I²C slave address (0010100), open-drain SDA requiring external 1.7 kΩ pull-up, and supports Standard/Fast Mode up to 400 kHz. Conversion settling is single-cycle with no latency, enabling true multiplexed operation without pipeline delay or redundant reads.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 16-bit signed (0 to 65535 decimal), no missing codes-guarantees monotonicity for control and measurement integrity |
| Conversion Rate | 60 samples per second-enables real-time monitoring of slow-varying physical parameters (e.g., temperature, pressure) |
| INL Error | ±2 LSB max-ensures <0.003% linearity error over full scale, critical for high-fidelity instrumentation |
| Offset Error | ±2 LSB max-supports accurate zero-point referencing without factory trimming |
| Supply Current | 800 µA during conversion, <0.2 µA in sleep-enables battery-powered operation with >1-year lifetime at 1 Hz read rate |
| Differential Input Range | ±(VREF⁺ – VREF⁻), up to ±5 V-allows direct interfacing with bridge sensors and bipolar transducer outputs |
| Reference Flexibility | VREF⁺ and VREF⁻ independently set between GND and VCC (min ΔV = 2.5 V)-permits ratiometric or absolute reference configurations |
Pinout & Package
Available in two compact packages: 8-pin 3 mm × 2 mm DFN (exposed pad = GND) and 8-pin TSOT-23. Both share identical pin functions and I²C-compatible pinout.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND (Pin 1) | Ground reference | Primary low-impedance return path; exposed pad (DFN only) must be soldered to PCB ground plane |
| REF– (Pin 2) | Negative reference input | Defines lower bound of differential reference voltage; accepts 0 V to (VCC – 2.5 V) |
| REF+ (Pin 3) | Positive reference input | Defines upper bound of differential reference voltage; accepts (VREF– + 2.5 V) to VCC |
| VCC (Pin 4) | Power supply | 2.7 V to 5.5 V analog/digital supply; requires local 10 µF || 0.1 µF ceramic decoupling |
| IN– (Pin 5) | Negative analog input | Differential input node; DC leakage <±10 nA enables high-impedance sensor interfacing |
| IN+ (Pin 6) | Positive analog input | Differential input node; supports ±8 LSB over/underrange beyond VREF bounds |
| SCL (Pin 7) | I²C clock input | Slave-only interface; accepts 0–400 kHz clock; timing-critical for data latching on rising edge |
| SDA (Pin 8) | I²C bidirectional data | Open-drain output during read; requires external pull-up; transmits 16-bit signed result MSB-first |
Key Features
| Feature | Design Value |
|---|---|
| No-latency single-cycle conversion | Eliminates pipeline delay and redundant reads-ideal for time-critical multiplexed sensor arrays |
| 50 nA average input sampling current | Enables direct RC antialiasing (e.g., 1 kΩ + 0.1 µF) with <1 LSB error-reduces external component count |
| Auto-sleep mode (<0.2 µA) | Reduces average power to <50 µW at 1 Hz read rate-extends battery life in portable monitoring devices |
| Internal oscillator | Removes need for external crystal or clock source-simplifies BOM and layout in space-constrained designs |
| Continuous internal calibration | Maintains ±2 LSB INL and offset accuracy over temperature and time-eliminates system-level recalibration |
Applications
| System Monitoring | Environmental Monitoring |
|---|---|
Use Scenario: Real-time voltage, current, and temperature tracking in industrial PLC backplanes and power supply units. IC Role / Device Role / Timing Role: Precision differential ADC capturing slow-varying analog signals from shunt resistors and thermistors. Use Value: 16-bit resolution and ±2 LSB INL enable detection of sub-millivolt drifts in rail voltages and <0.1°C temperature changes. |
Use Scenario: Low-power wireless sensor nodes measuring air quality (CO₂, humidity), soil moisture, and ambient light. IC Role / Device Role / Timing Role: Primary data acquisition front-end converting conditioned sensor outputs to digital via I²C. Use Value: 50 nA input current and auto-sleep mode allow multi-year battery operation with periodic wake-up and measurement. |
| Direct Temperature Measurements | Industrial Process Control |
Use Scenario: High-accuracy RTD and thermocouple interfaces in HVAC controllers and medical diagnostic equipment. IC Role / Device Role / Timing Role: Ratiometric ADC using external precision reference to reject common-mode noise in noisy plant environments. Use Value: Differential input range up to ±5 V and negligible IN+/IN– leakage support 4-wire RTD measurements with <0.02% system error. |
Use Scenario: Closed-loop feedback in programmable logic controllers regulating flow, pressure, and level in chemical processing plants. IC Role / Device Role / Timing Role: Analog input channel digitizing 4–20 mA transmitter outputs after precision shunt conversion. Use Value: Single-cycle settling and no missing codes ensure deterministic control loop timing and prevent actuator jitter. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 16-bit differential I²C ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADS1115IDGSR | 4-channel mux, programmable gain amplifier (PGA), 860 sps max, no internal oscillator-requires external clock or MCU timing | Better suited for multi-sensor, variable-range systems; lacks LTC2453's ultra-low input current and auto-sleep optimization | Select when channel multiplexing or PGA flexibility outweighs lowest power and simplest integration |
| MCP3424-E/SL | 4-channel, 18-bit resolution, 15 sps default, external crystal required, higher 1.2 mA active current | Higher resolution but slower speed and higher power-used where precision > speed, e.g., laboratory-grade meters | Select when 18-bit accuracy is mandatory and 15 sps suffices; avoid for battery-powered or fast-response systems |
Compared with ADS1115IDGSR and MCP3424-E/SL, the LTC2453 delivers superior power efficiency (<0.2 µA sleep), simpler system integration (no external clock), and optimized input drive (50 nA sampling current), making it ideal for ultra-compact, long-life sensor nodes where 16-bit fidelity and 60 sps are sufficient.
Availability
LTC2453 is available at Aetrix Electronics and suitable for industrial process control, environmental monitoring, and embedded sensor subsystems requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.
Supply support for LTC2453 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 LTC2453 belongs to ADI's ultra-low-power precision delta-sigma ADC family, designed specifically for space- and power-constrained applications demanding high resolution without external timing or complex support circuitry.
FAQ
What is the absolute maximum supply voltage for the LTC2453?
The LTC2453 has an absolute maximum supply voltage (VCC) rating of 6 V. Operation above this level risks permanent damage. The recommended operating range is 2.7 V to 5.5 V. Exceeding 6 V-even momentarily-may compromise ESD protection structures and invalidate warranty coverage for the LTC2453.
Does the LTC2453 require an external crystal or clock source?
No, the LTC2453 does not require an external crystal or clock source. It integrates a precision internal oscillator that enables full functionality-including 60 sps conversion and I²C communication-without any external timing components. This simplifies design and reduces bill-of-materials cost for the LTC2453.
What is the guaranteed integral nonlinearity (INL) specification for the LTC2453 over temperature?
The LTC2453 guarantees ±2 LSB maximum integral nonlinearity over its full operating temperature range (–40°C to +85°C for I-grade). This specification is tested and ensured across temperature, ensuring consistent measurement fidelity in industrial environments where thermal drift would otherwise degrade accuracy.
Can the LTC2453 measure input voltages outside the reference range (overrange/underrange)?
Yes, the LTC2453 provides typical overrange and underrange capability totaling 31 LSB. For example, with VREF+ = 5 V and VREF– = 0 V, it can correctly digitize inputs up to ~8 LSB below 0 V or above 5 V before clamping occurs-enabling robust handling of transient excursions in the LTC2453's input stage.
How does the LTC2453 enter and exit sleep mode automatically?
The LTC2453 automatically enters sleep mode after completing a conversion and holding the result in its internal shift register. It remains asleep until addressed via I²C for a read operation. Upon successful ACK and data transfer completion, a new conversion initiates-making sleep/wake fully transparent and managed internally by the LTC2453.
DC1266A-A Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Packaging:
- Box
- Product Status:
- Active
- Number of A/D Converters:
- 2
- Number of Bits:
- 16
- Sampling Rate (Per Second):
- 60
- Data Interface:
- I2C, Serial
- Input Range:
- ±VREF
- Power (Typ) @ Conditions:
- -
- Utilized IC / Part:
- LTC2453
- Contents:
- Board(s)
DC1266A-A FAQ
1.How can I place an order for DC1266A-A through Aetrix?
Please submit a Request for Quotation (RFQ) for DC1266A-A 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 DC1266A-A reliable?
The price and inventory of DC1266A-A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DC1266A-A is usually 5 days.
3.What payment methods are accepted for DC1266A-A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DC1266A-A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DC1266A-A?
DC1266A-A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DC1266A-A 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 DC1266A-A?
For technical support, including DC1266A-A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DC1266A-A requirements.
6.How does Aetrix verify that DC1266A-A is sourced from the original manufacturer or authorized distributors?
All DC1266A-A 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 DC1266A-A meets industry standards.
7.What is the process for return or replacement of DC1266A-A?
All DC1266A-A units undergo pre-shipment inspection (PSI). If there is an issue with DC1266A-A, 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 DC1266A-A part is unused and in its original packaging.
Return procedure for DC1266A-A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
DC1266A-A Tags
-
1083
Adafruit Industries LLC
-
1085
Adafruit Industries LLC
-
ADS7038Q1EVM-PDK
Texas Instruments
-
ADS8688EVM-PDK
Texas Instruments
-
EVAL-AD7606C18FMCZ
Analog Devices Inc.
-
ADS1232REF
Texas Instruments
-
EVAL-AD4134FMCZ
Analog Devices Inc.
-
EVAL-AD7768FMCZ
Analog Devices Inc.
-
ADC128S102EVM
Texas Instruments
-
ADS124S08EVM
Texas Instruments
-
ADC6140EVM-PDK
Texas Instruments
-
ADS7066EVM-PDK
Texas Instruments
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
