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Analog Devices Inc. LTC2436-1CGN#PBF
- Part No.:
- LTC2436-1CGN#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 16-SSOP (0.154", 3.90mm Width)
- Datasheet:
-
LTC2436-1CGN#PBF.pdf
- Description:
- IC ADC 16BIT SIGMA-DELTA 16SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:406
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Product details
Overview
LTC2436-1CGN#PBF from Analog Devices (formerly Linear Technology) is a 2-channel differential input, micropower 16-bit No Latency ΔΣ analog-to-digital converter with integrated oscillator and 3-wire SPI/MICROWIRE interface. It delivers 0.12LSB INL, 800nV RMS noise independent of VREF, and >87dB 50Hz/60Hz rejection. Used in precision weight scales and strain-gage transducers requiring stable ratiometric measurement at 2.7V–5.5V supply.
For engineers reviewing the LTC2436-1CGN#PBF datasheet, LTC2436-1CGN#PBF pinout, LTC2436-1CGN#PBF application, or LTC2436-1CGN#PBF equivalent, key selection criteria include its single-cycle digital filter settling, automatic ping-pong channel selection, differential reference support down to 0.1V, and guaranteed no missing codes across temperature.
Technical Context
The LTC2436-1CGN#PBF employs a 3rd-order delta-sigma modulator with decimating FIR filtering and on-chip autocalibration that performs offset and full-scale correction every conversion cycle. Its internal oscillator eliminates external timing components and enables simultaneous 50Hz/60Hz ±2% notch rejection when FO is grounded.
Operation uses a three-state cycle-conversion, sleep (4µA), and data output-with CS-controlled wake-up and 19-bit serial output (3 status + 16 data bits). The device supports both internal SCK (output mode) and external SCK (input mode), with timing fully defined for SPI-compatible microcontrollers.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 16-bit with no missing codes-guarantees monotonicity and unambiguous code mapping across full input range. |
| INL | 0.12LSB max (5V VCC, 5V VREF)-ensures high linearity for precision sensor digitization without post-calibration. |
| Noise | 800nV RMS, independent of VREF-enables improved effective resolution at low reference voltages (e.g., 100mV). |
| Supply Current | 200µA active, 4µA autosleep-supports battery-powered instrumentation with minimal quiescent power impact. |
| Common Mode Rejection | >140dB DC-rejects ground shifts and supply coupling in remote-sensing configurations with wide VINCM/VREFCM range (GND to VCC). |
| Notch Rejection | 87dB min at 49Hz–61.2Hz-achieved via internal oscillator; configurable to alternate rejection frequency using external clock on FO pin. |
| Input Range | ±0.5 × VREF, VREF = 0.1V to VCC-supports flexible ratiometric measurement and direct thermocouple/bridge interfacing. |
Pinout & Package
Narrow SSOP-16 package (GN), RoHS-compliant, with five dedicated GND pins (Pins 8,9,10,15,16) for optimal noise immunity and decoupling.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC (Pin 1) | Positive supply input | 2.7V–5.5V operation; requires 10µF tantalum + 0.1µF ceramic bypass close to pin. |
| REF+ / REF– (Pins 2,3) | Differential reference inputs | Accept 0.1V–VCC differential voltage; common-mode range extends GND to VCC independently. |
| CH0+/CH0– / CH1+/CH1– (Pins 4–7) | Differential analog inputs | Two independent channels; bipolar input range = ±0.5 × VREF; absolute range = GND−0.3V to VCC+0.3V. |
| GND (Pins 8,9,10,15,16) | Ground return | Five internally connected pins-must all be tied to low-impedance ground plane for EMI control and accuracy. |
| CS (Pin 11) | Active-low chip select | Wakes device from 4µA sleep; aborts data transfer if raised mid-output; initiates new conversion. |
| SDO (Pin 12) | 3-state serial data output | Outputs 19-bit frame (EOC/CH/SIG/16-bit result); high-Z when CS = HIGH; usable as conversion-complete interrupt. |
| SCK (Pin 13) | Bidirectional serial clock | Auto-configured at power-up: output in internal SCK mode, input in external SCK mode; weak pull-up enabled in output mode. |
| FO (Pin 14) | Frequency control input | Selects internal oscillator (FO = GND) for 50/60Hz rejection or external clock (fEOSC = 2.56–2000kHz) for custom notch frequency. |
Key Features
| Feature | Design Value |
|---|---|
| No latency conversion | Digital filter settles in one cycle-output corresponds exactly to the just-completed conversion, enabling true real-time multiplexed sensing. |
| Automatic ping-pong channel selection | Alternates between CH0 and CH1 without software intervention; channel ID embedded in output status bits (Bit 17). |
| Integrated oscillator | Eliminates crystals, capacitors, or external clocks for 50/60Hz rejection-reduces BOM count and layout sensitivity. |
| True differential reference and inputs | Independent GND-to-VCC common-mode ranges for REF and IN allow remote Kelvin sensing and reject supply-induced errors. |
| Autocalibration per conversion | Continuous offset and full-scale correction ensures stability over time, temperature (0°C–70°C), and supply variation-no user calibration required. |
Applications
| Weight Scales | Strain-Gage Transducers |
|---|---|
Use Scenario: High-accuracy platform or load-cell weighing systems operating from single 3.3V or 5V supply with battery backup. IC Role / Device Role / Timing Role: Direct digitizer for mV-level bridge outputs; provides ratiometric measurement referenced to excitation voltage. Use Value: 0.12LSB INL and 800nV noise enable 1:30,000+ dynamic range without amplification-reducing component count and thermal drift. | Use Scenario: Industrial force/torque sensors in process control loops where long cable runs introduce common-mode noise. IC Role / Device Role / Timing Role: Precision ADC front-end with >140dB DC common-mode rejection and simultaneous 50/60Hz line rejection. Use Value: Eliminates need for external notch filters or synchronous demodulation-simplifies firmware and improves EMC robustness. |
| Direct Temperature Measurement | Gas Analyzers |
Use Scenario: Thermocouple-based temperature monitoring in HVAC or lab equipment with cold-junction compensation. IC Role / Device Role / Timing Role: Low-drift, low-noise ADC accepting direct thermocouple voltage (±10mV typical) with programmable gain not required. Use Value: 800nV RMS noise and 0.006LSB offset error ensure sub-0.1°C resolution at room temperature without calibration. | Use Scenario: Electrochemical gas sensors requiring stable, low-power analog front-end for ppm-level concentration detection. IC Role / Device Role / Timing Role: Micropower ADC capturing slow-varying sensor currents/voltages while rejecting ambient AC interference. Use Value: 4µA autosleep current extends battery life in portable analyzers; 0.1V minimum VREF supports ultra-low-range sensor interfaces. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 16-bit delta-sigma ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADS1115IDGSR | 4-channel, I²C interface, 16-bit, 860SPS max; no integrated oscillator; requires external clock or MCU timing. | Lacks simultaneous 50/60Hz rejection; better suited for multi-sensor polling vs. dual-channel continuous acquisition. | Choose ADS1115IDGSR for I²C-based systems needing more channels and simpler bus integration; avoid when line-frequency rejection is mandatory. |
| LTC2412CGN#PBF | 24-bit resolution, same pinout and interface; higher noise (1.3µV RMS), slower conversion (133ms vs. 145ms), identical 50/60Hz rejection architecture. | Targeted at ultra-high-resolution applications where 16-bit is insufficient; shares layout compatibility but trades speed and power for resolution. | Choose LTC2412CGN#PBF only when 24-bit resolution is required; LTC2436-1CGN#PBF offers better noise efficiency and lower power for 16-bit use cases. |
Compared with ADS1115IDGSR and LTC2412CGN#PBF, the LTC2436-1CGN#PBF uniquely combines guaranteed no-latency output, integrated 50/60Hz rejection, and micropower sleep-making it optimal for dual-channel, line-powered or battery-operated precision measurement where timing determinism and EMI resilience are critical.
Availability
LTC2436-1CGN#PBF is available at Aetrix Electronics and suitable for weight scales, strain-gage transducers, direct temperature measurement, and gas analyzers requiring stable component supply, long-term lifecycle support, and consistent parametric performance across production lots.
Supply support for LTC2436-1CGN#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 technologies, serving industrial, automotive, communications, and healthcare markets.
The LTC2436-1CGN#PBF belongs to ADI's precision delta-sigma ADC product line, designed specifically for low-power, high-accuracy sensor digitization in environments demanding line-frequency immunity and minimal system-level calibration.
FAQ
What is the operating temperature range for the LTC2436-1CGN#PBF?
The LTC2436-1CGN#PBF is specified for commercial-grade operation from 0°C to 70°C. This range is confirmed in the Absolute Maximum Ratings table and applies to all electrical characteristics unless otherwise noted. The 'C' suffix in the part number explicitly denotes the 0°C–70°C grade, distinguishing it from the industrial-grade LTC2436-1IGN#PBF (–40°C to 85°C).
Does the LTC2436-1CGN#PBF require external passive components for its internal oscillator?
No, the LTC2436-1CGN#PBF does not require any external passive components for its internal oscillator. As stated in the datasheet, "The internal oscillator requires no external frequency setting components." When FO is tied to GND, the device uses its on-chip oscillator to achieve simultaneous 50Hz/60Hz rejection without crystals, capacitors, or resistors.
How does the LTC2436-1CGN#PBF handle channel selection between CH0 and CH1?
The LTC2436-1CGN#PBF uses automatic ping-pong channel selection: Channel 0 is selected at power-up, and subsequent conversions alternate between CH0 and CH1 without software control. The selected channel is encoded in Bit 17 of the 19-bit output stream-LOW for CH0, HIGH for CH1-allowing unambiguous identification of each conversion result.
Can the LTC2436-1CGN#PBF operate with a reference voltage below 1V?
Yes, the LTC2436-1CGN#PBF supports differential reference voltages as low as 0.1V, per the Electrical Characteristics table (VREF min = 0.1V). At 0.1V VREF, the full-scale input range is ±50mV, and the 800nV RMS noise yields ~4.8µVP-P, delivering significantly improved effective resolution compared to higher VREF settings.
What is the function of the FO pin on the LTC2436-1CGN#PBF?
The FO (Frequency Oscillator) pin on the LTC2436-1CGN#PBF selects the conversion clock source: when tied to GND, it enables the internal oscillator for fixed 50Hz/60Hz rejection; when driven by an external clock (2.56kHz–2MHz), it configures the digital filter for notch rejection centered at fEOSC/2560 ±4%. The device auto-detects the presence of an external signal and disables the internal oscillator accordingly.
LTC2436-1CGN#PBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- microPOWER™
- Package/Case:
- 16-SSOP (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Number of Bits:
- 16
- Sampling Rate (Per Second):
- 6.8
- Number of Inputs:
- 2
- Input Type:
- Differential
- Data Interface:
- SPI
- Configuration:
- MUX-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:
- 16-SSOP
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
LTC2436-1CGN#PBF FAQ
1.How can I place an order for LTC2436-1CGN#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2436-1CGN#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 LTC2436-1CGN#PBF reliable?
The price and inventory of LTC2436-1CGN#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC2436-1CGN#PBF is usually 5 days.
3.What payment methods are accepted for LTC2436-1CGN#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2436-1CGN#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2436-1CGN#PBF?
LTC2436-1CGN#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2436-1CGN#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 LTC2436-1CGN#PBF?
For technical support, including LTC2436-1CGN#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2436-1CGN#PBF requirements.
6.How does Aetrix verify that LTC2436-1CGN#PBF is sourced from the original manufacturer or authorized distributors?
All LTC2436-1CGN#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 LTC2436-1CGN#PBF meets industry standards.
7.What is the process for return or replacement of LTC2436-1CGN#PBF?
All LTC2436-1CGN#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2436-1CGN#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 LTC2436-1CGN#PBF part is unused and in its original packaging.
Return procedure for LTC2436-1CGN#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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