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Analog Devices Inc. LTC2336HMS-18#PBF
- Part No.:
- LTC2336HMS-18#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 16-TFSOP (0.118", 3.00mm Width)
- Datasheet:
-
LTC2336HMS-18#PBF.pdf
- Description:
- IC ADC 18BIT SAR 16MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,248
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Product details
Overview
LTC2336HMS-18#PBF from Analog Devices (formerly Linear Technology) is an 18-bit, 250ksps successive approximation register (SAR) analog-to-digital converter with fully differential, true bipolar ±10.24V inputs, 100dB SNR, ±4LSB INL max, and integrated 2.048V low-drift reference. It operates from a single 5V supply and targets high-voltage industrial data acquisition requiring wide dynamic range and precision at extended temperature.
For engineers reviewing the LTC2336HMS-18#PBF datasheet, LTC2336HMS-18#PBF pinout, LTC2336HMS-18#PBF application, or LTC2336HMS-18#PBF equivalent, key selection criteria include guaranteed 18-bit no-missing-codes operation, daisy-chain SPI interface compatibility across 1.8V–5V logic, internal oscillator timing, nap/sleep power management (28mW typical / 300μW sleep), and H-grade –40°C to +125°C operation.
Technical Context
The LTC2336HMS-18#PBF implements a charge-redistribution SAR architecture with a 45pF sampling capacitor and 50Ω switch on-resistance, enabling 7MHz input bandwidth and 1µs full-scale transient response. Its differential input stage uses resistor-divider networks to level-shift ±10.24V signals to the ADC core's 0–4.096V range while maintaining >67dB CMRR at 125kHz.
Conversion is initiated by a rising edge on CNV, with fixed 1.9–3µs conversion time set by an internal oscillator-eliminating external clock dependencies. The SPI-compatible serial interface supports both normal mode (RDL/SDI as bus enable) and daisy-chain mode (RDL/SDI as SDI), with SDO output in 2's complement format and timing validated down to 10ns SCK period.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 18-bit with guaranteed no missing codes-ensures monotonicity and full code coverage for precision measurement systems. |
| Sampling Rate | 250ksps maximum throughput with zero cycle latency-enables real-time capture of fast transients without pipeline delay. |
| Input Range | True bipolar ±10.24V fully differential-supports direct connection to industrial ±10V sensor outputs without external level-shifting. |
| SNR / THD | 100dB SNR and –115dB THD at 2kHz-meets demanding spectral purity requirements for FFT-based analysis and ATE applications. |
| Reference | Onboard 2.048V bandgap reference (20ppm/°C max drift) buffered to 4.096V-reduces BOM count and improves thermal stability over external references. |
| Power | 28mW typical at 250ksps; 300μW in sleep mode-enables low-power portable instrumentation and thermally constrained embedded designs. |
| Temperature Range | –40°C to +125°C (H-grade)-qualified for under-hood automotive, downhole oil & gas, and industrial process control environments. |
Pinout & Package
Package: 16-lead MSOP (3mm × 4.9mm), RoHS-compliant, lead-free finish (#PBF). Thermal resistance θJA = 110°C/W; TJMAX = 150°C.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDDLBYP (1) | 2.5V LDO bypass | Internally regulated supply for analog core; requires 2.2µF ceramic decoupling to GND for noise suppression. |
| VDD (2) | 5V main supply | Primary analog power rail (4.75–5.25V); bypassed with 10µF ceramic capacitor to ensure stable conversion performance. |
| GND (3,6,16) | Analog/digital ground | Three dedicated ground pins minimize ground bounce and improve PSRR; must be connected to low-impedance system ground plane. |
| IN+, IN– (4,5) | Differential analog inputs | High-impedance inputs accepting ±10.24V true bipolar signal; modeled as 2kΩ RIN + 45pF CIN + 50Ω RON for drive circuit design. |
| REFBUF (7) | Buffered reference output | Nominally 4.096V (2×REFIN); decoupled with 47µF ceramic capacitor; can be overdriven 2.5–5V when internal buffer disabled. |
| REFIN (8) | Reference output/input | 2.048V bandgap reference output; bypassed with 100nF ceramic capacitor; accepts external 1.25–2.4V reference for improved accuracy. |
| CNV (9) | Convert trigger | Rising-edge–sensitive control input; powers up ADC and initiates conversion-no external timing circuitry required. |
| CHAIN (10) | Mode selector | Low = normal SPI mode (RDL/SDI = bus enable); high = daisy-chain mode (RDL/SDI = serial data input). |
| BUSY (11) | Conversion status | Active-high open-drain indicator; asserts at CNV↑ and deasserts when conversion result is ready on SDO. |
| RDL/SDI (12) | Configurable I/O | Function depends on CHAIN state: enables/disables SDO in normal mode; receives daisy-chain data in chain mode. |
| SCK (13) | Serial clock input | Accepts 1.8–5V logic; supports up to 100MHz SCK (10ns period); controls MSB-first data shift timing for SDO. |
| SDO (14) | Serial data output | 2's complement 18-bit result shifted out MSB first; compatible with standard SPI master devices across voltage domains. |
| OVDD (15) | I/O supply | Digital interface supply (1.71–5.25V); sets logic thresholds for all digital pins; bypassed with 0.1µF ceramic capacitor. |
Key Features
| Feature | Design Value |
|---|---|
| No pipeline delay or cycle latency | Enables deterministic real-time control loops and eliminates FIFO buffering requirements in closed-loop systems. |
| Internal oscillator-controlled conversion | Removes dependency on external clock sources, simplifying PCB layout and reducing jitter-sensitive timing paths. |
| Auto-nap between conversions | Reduces average power proportionally to sampling rate-critical for battery-powered or thermally limited instrumentation. |
| Daisy-chain SPI mode | Allows synchronous multi-channel acquisition with single SCK/SCK line-reducing MCU GPIO count and interconnect complexity. |
| Guaranteed operation to 125°C | Validated performance across full H-grade temperature range-eliminates derating calculations for harsh-environment deployments. |
Applications
| Programmable Logic Controllers | Industrial Process Control |
|---|---|
Use Scenario: Digitizing ±10V analog outputs from pressure, temperature, and flow sensors in distributed I/O modules. IC Role / Device Role / Timing Role: Primary high-precision ADC front-end with true bipolar input handling and robust ESD protection on field-connected inputs. Use Value: Eliminates external signal conditioning for standard industrial voltage ranges, reducing component count and improving long-term calibration stability. | Use Scenario: High-speed monitoring of reactor vessel parameters in chemical plants where ambient temperatures exceed 85°C. IC Role / Device Role / Timing Role: Temperature-hardened SAR ADC providing 18-bit resolution at 250ksps in extended-temperature control cabinets. Use Value: Maintains specified INL (±4LSB), SNR (100dB), and reference drift (20ppm/°C) across –40°C to +125°C-enabling single-design reuse across climate zones. |
| High Speed Data Acquisition | Portable or Compact Instrumentation |
Use Scenario: 32k-point FFT-based spectral analysis in benchtop oscilloscopes and signal analyzers. IC Role / Device Role / Timing Role: Low-jitter, low-distortion ADC core delivering clean 100dB SNR and –115dB THD for accurate frequency-domain measurements. Use Value: Achieves >100dB SFDR without external anti-aliasing filtering due to 7MHz analog input bandwidth and inherent linearity. | Use Scenario: Battery-powered handheld multimeters and portable power quality analyzers requiring low standby current. IC Role / Device Role / Timing Role: Power-optimized ADC with 300μW sleep mode and auto-nap functionality to extend battery life between measurements. Use Value: Reduces system-level quiescent current by >90% compared to always-on ADCs-enabling >100-hour battery operation in intermittent-sampling use cases. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-resolution SAR ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADS8860IDRCT | 16-bit, 1MSPS, single-ended input, external reference only, no integrated buffer, 1.8V–3.3V OVDD only | Higher speed but lower resolution and narrower input range; lacks true bipolar support and H-grade temp rating | Select when sampling rate >250ksps is critical and ±10.24V input is conditioned externally. |
| AD7606C-18BSTZ | 18-bit, 1MSPS, 8-channel simultaneous sampling, ±10V input, internal reference (10ppm/°C), 5V-only OVDD | Multi-channel parallel acquisition capability; higher power (120mW), larger 64-lead LQFP package, no daisy-chain SPI | Select for multi-sensor synchronized capture where channel count outweighs power and board space constraints. |
Compared with ADS8860IDRCT and AD7606C-18BSTZ, the LTC2336HMS-18#PBF uniquely balances 18-bit precision, true ±10.24V differential input, ultra-low THD, and H-grade operation in a compact MSOP-making it optimal for single-channel, high-fidelity, thermally demanding industrial DAQ.
Availability
LTC2336HMS-18#PBF is available at Aetrix Electronics and suitable for programmable logic controllers, industrial process control systems, and high-speed data acquisition equipment requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for LTC2336HMS-18#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 semiconductors, formed through the acquisition of Linear Technology in 2017.
The LTC2336-18 product line was designed specifically for high-accuracy, high-speed industrial and instrumentation applications demanding wide dynamic range, true bipolar input capability, and extended temperature reliability-without compromising on power efficiency or interface flexibility.
FAQ
What is the maximum operating temperature specification for the LTC2336HMS-18#PBF?
The LTC2336HMS-18#PBF is rated for continuous operation from –40°C to +125°C (H-grade), with guaranteed performance including ±4LSB INL, 100dB SNR, and 20ppm/°C reference drift across this full range. This exceeds the I-grade (–40°C to +85°C) and C-grade (0°C to +70°C) variants, making it suitable for under-hood automotive, downhole, and high-ambient industrial environments.
Does the LTC2336HMS-18#PBF require an external clock source for conversion timing?
No, the LTC2336HMS-18#PBF incorporates an internal oscillator that sets the conversion time (1.9–3µs), eliminating the need for an external clock. This simplifies system design, reduces jitter sensitivity, and ensures deterministic timing independent of host controller clock stability-critical for consistent FFT performance and real-time control applications.
Can the LTC2336HMS-18#PBF interface directly with a 1.8V microcontroller SPI port?
Yes, the LTC2336HMS-18#PBF supports 1.8V logic levels via its OVDD pin (1.71–5.25V range). When OVDD = 1.8V, all digital inputs (CNV, CHAIN, RDL/SDI, SCK) recognize 0.2×OVDD (0.36V) as VIL and 0.8×OVDD (1.44V) as VIH, and SDO outputs are compatible with 1.8V receivers-enabling seamless integration with low-voltage MCUs without level shifters.
How does the nap mode function in the LTC2336HMS-18#PBF, and what power savings does it provide?
The LTC2336HMS-18#PBF automatically enters nap mode between conversions, reducing supply current from 6.5mA (250ksps active) to 4.6mA during idle periods. This scales power dissipation with sampling rate-e.g., at 10ksps, average power drops to ~1.1mW. Nap mode maintains full functionality and wake-up readiness, unlike sleep mode (300μW), which requires reinitialization.
Is the LTC2336HMS-18#PBF pin-compatible with other members of the LTC2336 family, such as the LTC2336CMS-18#PBF?
Yes, all LTC2336-18 variants-including LTC2336CMS-18#PBF (C-grade), LTC2336IMS-18#PBF (I-grade), and LTC2336HMS-18#PBF (H-grade)-share identical 16-lead MSOP packaging, pinout, electrical interface, and functional behavior. Only the guaranteed temperature range and associated parametric limits differ; PCB layouts and firmware are fully interchangeable across grades.
LTC2336HMS-18#PBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 16-TFSOP (0.118", 3.00mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Number of Bits:
- 18
- Sampling Rate (Per Second):
- 250k
- Number of Inputs:
- 1
- Input Type:
- Differential
- Data Interface:
- SPI
- Configuration:
- 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:
- -
- Operating Temperature:
- -40°C ~ 125°C
- Supplier Device Package:
- 16-MSOP
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
LTC2336HMS-18#PBF FAQ
1.How can I place an order for LTC2336HMS-18#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2336HMS-18#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 LTC2336HMS-18#PBF reliable?
The price and inventory of LTC2336HMS-18#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC2336HMS-18#PBF is usually 5 days.
3.What payment methods are accepted for LTC2336HMS-18#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2336HMS-18#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2336HMS-18#PBF?
LTC2336HMS-18#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2336HMS-18#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 LTC2336HMS-18#PBF?
For technical support, including LTC2336HMS-18#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2336HMS-18#PBF requirements.
6.How does Aetrix verify that LTC2336HMS-18#PBF is sourced from the original manufacturer or authorized distributors?
All LTC2336HMS-18#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 LTC2336HMS-18#PBF meets industry standards.
7.What is the process for return or replacement of LTC2336HMS-18#PBF?
All LTC2336HMS-18#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2336HMS-18#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 LTC2336HMS-18#PBF part is unused and in its original packaging.
Return procedure for LTC2336HMS-18#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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