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Analog Devices Inc. LTC1865IMS#TRPBF
- Part No.:
- LTC1865IMS#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
LTC1865IMS#TRPBF.pdf
- Description:
- IC ADC 16BIT SAR 10MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,504
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Product details
Overview
LTC1865IMS#TRPBF from Analog Devices (formerly Linear Technology) is a 16-bit, 250ksps successive approximation ADC with integrated 2-channel analog multiplexer and software-selectable input configuration in a 10-lead MSOP package. It operates on a single 5V supply, draws only 850μA at full speed, and features auto shutdown reducing current to 2μA at 1ksps. Its differential or single-ended channel selection, adjustable reference input, and SPI/MICROWIRE-compatible serial interface make it suitable for portable instrumentation requiring high resolution and low power.
For engineers reviewing the LTC1865IMS#TRPBF datasheet, LTC1865IMS#TRPBF pinout, LTC1865IMS#TRPBF application, or LTC1865IMS#TRPBF equivalent, key selection criteria include its guaranteed –40°C to +85°C operation, 10-lead MSOP thermal performance (θJA = 210°C/W), true differential input capability, and compatibility with ratiometric or external reference systems down to 1V full-scale span.
Technical Context
The LTC1865IMS#TRPBF implements a switched-capacitor SAR architecture with integrated sample-and-hold and a 2-bit configuration word shifted via SDI to select between CH0/CH1 in single-ended or differential modes. Its conversion timing is deterministic: tCONV = 3.2μs max at H-grade, synchronized by CONV rising edge and data readout on SCK falling edges.
It supports full-duplex serial communication with simultaneous SDI input and SDO output, enabling real-time reconfiguration between conversions. The reference input (Pin 10) is externally adjustable from 1V to VCC, and analog inputs exhibit ±1μA leakage and 12pF sampling capacitance - critical for driving source impedance and settling time design.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 16-bit - delivers 1 LSB = VREF/65536 quantization step for precision measurement |
| Max Sampling Rate | 250ksps - enables 4μs minimum conversion period for high-speed transient capture |
| Supply Current | 850μA typ at 250ksps; drops to 2μA at 1ksps - enables battery life extension via dynamic clock scaling |
| INL Error | ±8 LSB max - ensures monotonicity and <0.012% full-scale linearity error across temperature |
| Signal-to-Noise Ratio | 87 dB - supports >14.5 effective number of bits (ENOB) in clean signal environments |
| Full Power Bandwidth | 20 MHz - allows accurate digitization of fast-rising analog signals without aliasing distortion |
| Operating Temperature | –40°C to +85°C - qualified for industrial embedded and automotive cabin applications |
Pinout & Package
Package: 10-Lead Plastic MSOP (3mm × 3mm, 0.5mm pitch), θJA = 210°C/W, TJMAX = 150°C.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CONV (1) | Convert Control Input | Rising edge initiates conversion; held high after completion enters auto-sleep mode |
| CH0 (2) | Analog Input Channel 0 | Selectable as "+" or "–" in differential mode or referenced to GND in single-ended mode |
| CH1 (3) | Analog Input Channel 1 | Paired with CH0 per MUX configuration table; shares same sampling aperture timing |
| AGND (4) | Analog Ground Reference | Must connect directly to low-impedance analog ground plane to minimize noise coupling |
| DGND (5) | Digital Ground Reference | Internally isolated from AGND; requires star-point connection to avoid digital switching noise |
| SDI (6) | Serial Data Input | Receives 2-bit MUX configuration word on rising SCK edges prior to conversion |
| SDO (7) | Serial Data Output | Outputs 16-bit result on falling SCK edges; tri-stated when CONV is high |
| SCK (8) | Serial Clock Input | Drives full-duplex shift register; max frequency 20MHz (H-grade) |
| VCC (9) | Positive Supply | Single 4.75V–5.25V rail; requires ≥1μF tantalum bypass to AGND near pin |
| VREF (10) | Reference Voltage Input | Defines full-scale range (1V to VCC); must be low-noise and decoupled independently |
Key Features
| Feature | Design Value |
|---|---|
| Software-Selectable 2-Channel MUX | Enables flexible sensor routing (CH0/CH1, differential or single-ended) without hardware changes |
| Auto Shutdown Between Conversions | Reduces average power by >99% at low sampling rates, extending battery runtime |
| True Differential Input Architecture | Rejects common-mode noise up to 20MHz bandwidth, improving SNR in noisy environments |
| Adjustable Reference Span (1V to VCC) | Allows direct interface to low-voltage sensors without gain stages, minimizing component count |
| Guaranteed Operation to +85°C | Validated for industrial temperature range without derating, simplifying thermal design |
Applications
| Portable Data Loggers | Industrial Sensor Interfaces |
|---|---|
Use Scenario: Battery-powered environmental monitors logging temperature, humidity, and pressure over weeks. IC Role / Device Role / Timing Role: Primary ADC acquiring multi-sensor analog outputs at 1–10ksps with automatic channel switching. Use Value: 850μA active current and 2μA sleep current enable >1-year battery life using two AA cells. | Use Scenario: PLC analog input modules conditioning 4–20mA or thermocouple signals in factory automation. IC Role / Device Role / Timing Role: High-accuracy front-end digitizer with ratiometric reference tied to current-sense resistor. Use Value: ±8 LSB INL and 87dB SNR ensure <0.02% total measurement uncertainty across –40°C to +85°C. |
| Isolated Remote Monitoring | Medical Instrumentation |
Use Scenario: Wireless sensor nodes deployed in hazardous zones with galvanic isolation between analog and digital domains. IC Role / Device Role / Timing Role: Isolated-side ADC feeding data to SPI-isolated microcontroller via optocouplers or digital isolators. Use Value: Low 12pF input capacitance and ±1μA leakage minimize loading on isolated signal paths and reduce isolation barrier stress. | Use Scenario: Portable ECG or EEG devices requiring low-noise, low-power biopotential acquisition. IC Role / Device Role / Timing Role: Front-end ADC digitizing amplified electrode signals with programmable gain and channel selection. Use Value: Adjustable 1V–5V reference span enables optimal dynamic range matching to amplifier output swing, maximizing ENOB. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 16-bit SAR ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADS8860IDRCT | 16-bit, 1MSPS, SPI interface, 2.5V supply only, no internal MUX, 1.5mW typical power at full speed | Higher speed but narrower supply range; lacks software-configurable dual-channel input | Select when system requires >250ksps and can accommodate 2.5V-only operation and external MUX |
| MAX11100ETE+ | 16-bit, 250ksps, internal 2-channel MUX, 2.7–3.6V supply, 1.25mW at full speed, SPI-compatible | Lower voltage operation limits use with 5V systems; smaller 12-lead TQFN package | Select for ultra-low-voltage battery systems where 5V supply is unavailable |
Compared with ADS8860IDRCT and MAX11100ETE+, the LTC1865IMS#TRPBF uniquely combines 5V single-supply operation, guaranteed industrial temperature range, and software-selectable MUX functionality in a compact 10-lead MSOP - making it optimal for legacy 5V designs requiring field-upgradable channel routing without PCB revision.
Availability
LTC1865IMS#TRPBF is available at Aetrix Electronics and suitable for portable instrumentation, industrial sensor interfaces, and isolated remote monitoring requiring stable component supply and long-term production continuity.
Supply support for LTC1865IMS#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 technologies, serving industrial, automotive, communications, and healthcare markets.
The LTC1865IMS#TRPBF belongs to ADI's legacy Linear Technology precision data acquisition product line, designed specifically for low-power, high-resolution applications where size, thermal performance, and supply simplicity are critical constraints.
FAQ
What is the maximum sampling rate supported by the LTC1865IMS#TRPBF?
The LTC1865IMS#TRPBF supports a maximum sampling rate of 250ksps under recommended operating conditions (VCC = 5V, TA ≤ +85°C). At this rate, conversion time is guaranteed ≤3.2μs, and the device draws 850μA typical supply current. Performance remains fully specified across its –40°C to +85°C operating range.
Does the LTC1865IMS#TRPBF require an external reference voltage?
The LTC1865IMS#TRPBF does not require an external reference - it accepts an adjustable reference input (VREF) from 1V to VCC (5V), which may be derived from a precision voltage reference, resistor divider, or ratiometric source. The MSOP version provides full flexibility; the SO-8 variant ties VREF internally to VCC.
How many analog input channels does the LTC1865IMS#TRPBF support?
The LTC1865IMS#TRPBF supports two analog input channels (CH0 and CH1) with software-selectable configuration via a 2-bit word shifted into SDI. It enables four modes: single-ended CH0, single-ended CH1, differential CH0–CH1, and differential CH1–CH0 - all implemented within the same IC without external switches.
What package type and footprint does the LTC1865IMS#TRPBF use?
The LTC1865IMS#TRPBF uses a 10-lead plastic MSOP package (3mm × 3mm, 0.5mm pitch) with exposed pad thermal enhancement. Its pinout is distinct from the 8-lead SO-8 and 8-lead MSOP variants, and it requires dedicated PCB layout accommodating DGND/AGND separation and low-inductance VCC/VREF bypassing.
Is the LTC1865IMS#TRPBF compatible with SPI or MICROWIRE protocols?
Yes, the LTC1865IMS#TRPBF is fully compatible with both SPI and MICROWIRE serial protocols. It uses a 3-wire interface (SCK, SDI, SDO) with data valid on SCK falling edges and sampled on rising edges. Its full-duplex operation and lack of chip-select pin align with MICROWIRE timing, while its frame structure supports standard SPI master controllers.
LTC1865IMS#TRPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Number of Bits:
- 16
- Sampling Rate (Per Second):
- 250k
- Number of Inputs:
- 2
- Input Type:
- Single Ended
- Data Interface:
- SPI
- Configuration:
- MUX-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:
- -40°C ~ 85°C
- Supplier Device Package:
- 10-MSOP
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
LTC1865IMS#TRPBF FAQ
1.How can I place an order for LTC1865IMS#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC1865IMS#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 LTC1865IMS#TRPBF reliable?
The price and inventory of LTC1865IMS#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC1865IMS#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC1865IMS#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC1865IMS#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC1865IMS#TRPBF?
LTC1865IMS#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC1865IMS#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 LTC1865IMS#TRPBF?
For technical support, including LTC1865IMS#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC1865IMS#TRPBF requirements.
6.How does Aetrix verify that LTC1865IMS#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC1865IMS#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 LTC1865IMS#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC1865IMS#TRPBF?
All LTC1865IMS#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC1865IMS#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 LTC1865IMS#TRPBF part is unused and in its original packaging.
Return procedure for LTC1865IMS#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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