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Analog Devices Inc. LTC1860CMS8#TRPBF
- Part No.:
- LTC1860CMS8#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
LTC1860CMS8#TRPBF.pdf
- Description:
- IC ADC 12BIT SAR 8MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,208
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Product details
Overview
LTC1860CMS8#TRPBF from Analog Devices (formerly Linear Technology) is a 12-bit, single-channel, successive-approximation ADC with true differential analog input, operating on a single 5V supply at up to 250ksps sampling rate and drawing only 850µA typical supply current. It features auto-shutdown to 1nA between conversions, SPI/MICROWIRE-compatible 3-wire serial interface, and adjustable reference input supporting 1V to 5V full-scale spans - used in portable instrumentation and isolated data acquisition systems.
For engineers reviewing the LTC1860CMS8#TRPBF datasheet, LTC1860CMS8#TRPBF pinout, LTC1860CMS8#TRPBF application, or LTC1860CMS8#TRPBF equivalent, key selection criteria include its MSOP-8 package, guaranteed operation from 0°C to 70°C, differential input architecture, low-power shutdown behavior, and compatibility with ratiometric or external reference designs.
Technical Context
The LTC1860CMS8#TRPBF implements a switched-capacitor SAR architecture with integrated sample-and-hold, enabling precise differential voltage measurement between IN+ and IN– pins. Its conversion timing is fixed at 3.2µs max (H-grade), synchronized by CONV pulse initiation and SCK-driven serial readout on falling edges.
It supports rail-to-rail input operation when IN– is grounded and VREF = VCC, delivers 72dB SNR and 71dB SINAD at 100kHz input, and maintains ±1 LSB INL over temperature - all while maintaining high-impedance analog inputs (±1µA leakage) and 12pF input capacitance in sample mode.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 12-bit - delivers 4096 discrete output codes for high-fidelity signal digitization |
| Max Sampling Rate | 250ksps - supports real-time capture of signals up to ~125kHz full-linear bandwidth |
| Supply Current | 850µA typ at 250ksps; drops to 1nA in auto-shutdown - enables battery-powered operation |
| INL Error | ±1 LSB - ensures monotonicity and accurate end-point linearity without missing codes |
| Reference Range | 1V to VCC (5V) - allows flexible scaling from low-voltage sensors to rail-to-rail inputs |
| SNR | 72dB - supports >11.5 effective number of bits (ENOB) for precision measurement |
| Digital Interface | SPI/MICROWIRE 3-wire serial - simplifies MCU/DSP integration with minimal GPIO usage |
Pinout & Package
Package: 8-lead plastic MSOP (MS8), 3.0mm × 3.0mm body, 0.65mm pitch, lead-free finish, rated for 0°C to 70°C operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VREF (Pin 1) | Reference Input | Defines full-scale span; must be low-noise and stable - accepts 1V to 5V, enabling ratiometric or precision reference use |
| IN+ (Pin 2) | Differential Analog Input (+) | High-impedance input sampled simultaneously with IN–; common-mode rejection improves noise immunity |
| IN– (Pin 3) | Differential Analog Input (–) | Paired with IN+; grounding IN– enables unipolar rail-to-rail input on IN+ |
| GND (Pin 4) | Analog Ground | Primary ground reference for analog circuitry; requires direct connection to analog ground plane |
| CONV (Pin 5) | Convert Control Input | Rising edge initiates conversion; held high after completion enters 1nA sleep mode; falling edge enables SDO |
| SDO (Pin 6) | Serial Data Output | Outputs 12-bit result MSB-first on falling SCK edges; tri-stated when CONV is high |
| SCK (Pin 7) | Serial Clock Input | Synchronizes data transfer; supports up to 20MHz clock (H-grade); receiver captures on rising edge |
| VCC (Pin 8) | Positive Supply | Single 4.75V–5.25V supply; requires local 1µF tantalum bypass to GND for noise-sensitive operation |
Key Features
| Feature | Design Value |
|---|---|
| Auto power-down between conversions | Reduces ICC to 1nA typical - extends battery life in intermittent-sampling applications |
| True differential input architecture | Rejects common-mode noise on IN+/IN– pair - critical for noisy industrial sensor interfaces |
| Adjustable reference input (1V–5V) | Enables direct connection to low-output sensors (e.g., 1V-output RTDs) without gain stages |
| Guaranteed operation to 125°C (MSOP) | This C-grade part operates reliably from 0°C to 70°C; H-grade variant supports extended range |
| Pin-compatible upgrade path | Shares footprint and interface with 16-bit LTC1864 - allows resolution scalability without PCB change |
Applications
| Portable Instrumentation | Isolated Data Acquisition |
|---|---|
Use Scenario: Handheld multimeter or environmental sensor node powered by coin cell or Li-ion battery. IC Role / Device Role / Timing Role: Primary ADC digitizing analog sensor outputs (e.g., thermistor, pressure bridge) with minimal power overhead. Use Value: 850µA active current and 1nA shutdown enable multi-year battery life in wake-on-event architectures. |
Use Scenario: Industrial sensor node transmitting data across opto-isolated or transformer-coupled barrier. IC Role / Device Role / Timing Role: Local-side ADC capturing analog field signals before isolation; synchronized via isolated SCK/CONV lines. Use Value: Differential input rejects ground-loop noise; 3-wire interface minimizes isolation channel count vs parallel bus. |
| Compact Embedded Monitoring | Low-Power Battery-Operated Systems |
Use Scenario: Space-constrained embedded controller monitoring motor current, voltage, or temperature. IC Role / Device Role / Timing Role: High-speed, low-footprint ADC interfacing directly to microcontroller GPIOs via SPI. Use Value: MSOP-8 package (3×3mm) saves board area; 250ksps supports control-loop sampling at ≤100kHz rates. |
Use Scenario: Wireless sensor tag performing periodic analog measurements before RF transmission. IC Role / Device Role / Timing Role: Burst-mode ADC activated by MCU timer, converting then returning to 1nA sleep until next trigger. Use Value: Auto-shutdown eliminates software-controlled power gating; fast 3.2µs conversion enables short wake windows. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 12-bit, low-power, serial ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LTC1864CMS8#PBF | 16-bit resolution, same MSOP-8 package, 250ksps, 4.25mW power, pin-compatible but higher accuracy | Requires higher-precision references and layout; not drop-in due to increased noise sensitivity and code width | Select when ENOB > 12-bit is required and system can accommodate tighter layout and reference stability demands |
| ADS7822U | 12-bit, 200ksps, 2.7V–5.25V supply, SPI interface, SO-8 package, 1.25mW at 200ksps | SO-8 footprint differs from MSOP-8; lacks differential input - uses pseudo-differential IN+/IN– with shared reference | Choose for cost-sensitive, non-differential applications where SO-8 is preferred and 50ksps lower speed is acceptable |
Compared with LTC1860CMS8#TRPBF, LTC1864CMS8#PBF offers higher resolution at identical speed and package but demands stricter layout and reference design, while ADS7822U provides lower-cost SO-8 compatibility at reduced performance and no true differential capability.
Availability
LTC1860CMS8#TRPBF is available at Aetrix Electronics and suitable for portable instrumentation, isolated data acquisition, and compact embedded monitoring requiring stable component supply, RoHS-compliant packaging, and long-term production continuity.
Supply support for LTC1860CMS8#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 acquired Linear Technology in 2017 and maintains its precision analog product lines, including high-performance data converters, with global manufacturing, testing, and quality assurance infrastructure.
The LTC1860CMS8#TRPBF belongs to Linear's µPower SAR ADC family, designed specifically for space- and energy-constrained systems needing high-speed, high-accuracy digitization without external support circuitry.
FAQ
What is the maximum sampling frequency of the LTC1860CMS8#TRPBF?
The LTC1860CMS8#TRPBF supports a maximum sampling frequency of 250ksps at 5V supply and 25°C. At extended temperature ranges or under worst-case process/voltage conditions, the guaranteed maximum remains 250ksps for the C-grade version per datasheet specifications.
Does the LTC1860CMS8#TRPBF support true differential input operation?
Yes, the LTC1860CMS8#TRPBF features true differential analog inputs (IN+, IN–) that measure the voltage difference between the two pins. This architecture provides inherent common-mode noise rejection and enables precise measurement of floating or bipolar signals.
What is the supply current of the LTC1860CMS8#TRPBF during active conversion?
The LTC1860CMS8#TRPBF draws 850µA typical supply current at 250ksps and 5V supply. Current scales downward at lower sampling rates due to automatic power-down between conversions, reaching 1nA in sleep mode when CONV is held high.
Can the LTC1860CMS8#TRPBF operate with a 1V reference voltage?
Yes, the LTC1860CMS8#TRPBF supports reference voltages from 1V to VCC (5V). With a 1V VREF, the device achieves 1V full-scale range, enabling direct digitization of low-output sensors without amplification - confirmed in the "Reference Input" section of the datasheet.
Which package type does the LTC1860CMS8#TRPBF use?
The LTC1860CMS8#TRPBF uses an 8-lead plastic MSOP (MS8) package measuring 3.0mm × 3.0mm with 0.65mm lead pitch. It is lead-free, tape-and-reel packaged (#TRPBF suffix), and rated for 0°C to 70°C operation.
LTC1860CMS8#TRPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Number of Bits:
- 12
- Sampling Rate (Per Second):
- 250k
- Number of Inputs:
- 1
- Input Type:
- Differential, Single Ended
- Data Interface:
- SPI
- Configuration:
- S/H-ADC
- Ratio - S/H:ADC:
- 1:1
- Number of A/D Converters:
- 1
- Architecture:
- SAR
- Reference Type:
- External
- Voltage - Supply, Analog:
- 5V
- Voltage - Supply, Digital:
- 5V
- Features:
- -
- Operating Temperature:
- 0°C ~ 70°C
- Supplier Device Package:
- 8-MSOP
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
LTC1860CMS8#TRPBF FAQ
1.How can I place an order for LTC1860CMS8#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC1860CMS8#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 LTC1860CMS8#TRPBF reliable?
The price and inventory of LTC1860CMS8#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC1860CMS8#TRPBF is usually 5 days.
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LTC1860CMS8#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC1860CMS8#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 LTC1860CMS8#TRPBF?
For technical support, including LTC1860CMS8#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC1860CMS8#TRPBF requirements.
6.How does Aetrix verify that LTC1860CMS8#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC1860CMS8#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 LTC1860CMS8#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC1860CMS8#TRPBF?
All LTC1860CMS8#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC1860CMS8#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 LTC1860CMS8#TRPBF part is unused and in its original packaging.
Return procedure for LTC1860CMS8#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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