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Analog Devices Inc. LTC1864ACMS8#TRPBF
- Part No.:
- LTC1864ACMS8#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
LTC1864ACMS8#TRPBF.pdf
- Description:
- IC ADC 16BIT SAR 8MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,862
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Product details
Overview
LTC1864ACMS8#TRPBF from Analog Devices (formerly Linear Technology) is a 16-bit, 250ksps successive approximation ADC with true differential analog inputs, single 5V supply operation, and auto-shutdown power management. It features 850μA typical supply current at full speed, 87dB SNR, ±6 LSB INL (A-grade), and MSOP-8 package. Designed for precision, low-power data acquisition in battery-operated instrumentation and isolated sensor interfaces.
For engineers reviewing the LTC1864ACMS8#TRPBF datasheet, LTC1864ACMS8#TRPBF pinout, LTC1864ACMS8#TRPBF application, or LTC1864ACMS8#TRPBF equivalent, key selection criteria include its guaranteed 0°C to 70°C operating range, differential input architecture, SPI/MICROWIRE-compatible serial interface, and compatibility with ratiometric or external reference configurations down to 1V full-scale span.
Technical Context
The LTC1864ACMS8#TRPBF implements a switched-capacitor SAR architecture with integrated sample-and-hold, supporting unipolar differential input measurements where VIN = IN+ − IN−. Its conversion cycle is initiated by a rising edge on CONV, completing in 2.75–3.2 μs, after which auto-shutdown reduces current to 2μA at 1ksps.
It uses a 3-wire serial interface (SCK, SDO, CONV) with data output synchronized to falling SCK edges and sampled on rising edges. The adjustable VREF pin (1V to 5V) sets full-scale range, and high-impedance analog inputs eliminate need for external gain stages in many signal-chain designs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 16-bit - delivers 65,536 discrete output codes for high-precision measurement resolution |
| Max Sampling Rate | 250ksps - supports real-time acquisition of signals up to 125kHz full-linear bandwidth |
| Supply Current | 850μA typ at 250ksps - enables compact, battery-powered systems with minimal thermal load |
| Signal-to-Noise Ratio | 87dB - ensures >14 effective bits of dynamic resolution for clean signal digitization |
| INL (A-grade) | ±6 LSB max - guarantees monotonicity and linearity critical for closed-loop control feedback |
| Reference Range | 1V to VCC - allows flexible scaling from low-voltage sensors to rail-to-rail inputs without external buffers |
| Operating Temp | 0°C to 70°C - validated for commercial-grade embedded instrumentation and industrial front-ends |
Pinout & Package
Package: 8-lead plastic MSOP (MS8), 3mm × 3mm body, 0.65mm pitch, exposed pad not present. Thermal resistance θJA = 210°C/W.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| VREF (1) | Reference Input | Defines full-scale span; accepts 1V–5V; must be low-noise and bypassed to AGND with ≥1μF |
| IN+ (2) | Differential Analog Input (+) | High-impedance input; sampled simultaneously with IN− for common-mode noise rejection |
| IN− (3) | Differential Analog Input (−) | Completes differential pair; zero code occurs when IN+ − IN− = 0V |
| GND (4) | Analog Ground | Single-point connection to analog ground plane; separates analog return from digital paths |
| CONV (5) | Convert Control Input | Rising edge initiates conversion; held high after completion enters auto-sleep mode |
| SDO (6) | Serial Data Output | 3-wire SPI/MICROWIRE-compatible output; data valid on falling SCK edge |
| SCK (7) | Serial Clock Input | Synchronizes data transfer; max 20MHz clock frequency supports fast readout |
| VCC (8) | Positive Supply | Single 4.75V–5.25V supply; requires local 1μF tantalum bypass to GND for noise immunity |
Key Features
| Feature | Design Value |
|---|---|
| Auto Shutdown Power Management | Reduces supply current to 2μA at 1ksps - extends battery life without software intervention |
| True Differential Input Architecture | Rejects common-mode noise on IN+/IN− pair - eliminates need for external instrumentation amps in noisy environments |
| Adjustable Reference Span (1V–5V) | Enables direct interface to low-output sensors (e.g., 10mV/V strain gauges) without gain stages |
| Guaranteed Operation to +70°C | Validated performance across full commercial temperature range - suitable for non-derated PCB layouts |
| Pin Compatibility with LTC1860/LTC1861 | Allows 16-bit upgrade path from 12-bit predecessors without layout changes or firmware rework |
Applications
| Portable Data Loggers | Industrial Sensor Signal Conditioning |
|---|---|
|
Use Scenario: Battery-powered environmental monitors acquiring temperature, pressure, and humidity over extended deployments. IC Role / Device Role / Timing Role: Primary ADC digitizing conditioned analog outputs from precision transducers with minimal power overhead. Use Value: 850μA active current and 2μA sleep current enable multi-year operation on coin-cell batteries while maintaining 16-bit resolution. |
Use Scenario: DIN-rail mounted PLC analog input modules measuring 4–20mA loop signals and thermocouple outputs. IC Role / Device Role / Timing Role: High-accuracy front-end ADC with differential inputs rejecting EMI from adjacent motor drives and switching power supplies. Use Value: 87dB SNR and ±6 LSB INL ensure <0.01% measurement uncertainty required for Class A industrial calibration standards. |
| Isolated Remote I/O Systems | Medical Instrumentation Front-Ends |
|
Use Scenario: Digitally isolated sensor nodes in hazardous locations using transformer- or capacitive-isolated power and data links. IC Role / Device Role / Timing Role: Low-power, low-noise ADC placed on isolated side to minimize coupling paths and simplify isolation barrier design. Use Value: Single-supply 5V operation and internal charge redistribution eliminate need for isolated dual supplies or level shifters. |
Use Scenario: Portable ECG and EEG devices requiring high-fidelity biopotential signal acquisition with strict power budgets. IC Role / Device Role / Timing Role: Precision ADC capturing low-amplitude, low-frequency physiological waveforms with minimal added noise. Use Value: 125kHz full-linear bandwidth and 83dB SINAD at 10kHz support diagnostic-grade waveform fidelity per IEC 60601-2-27. |
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, 1.8V supply, SPI interface; higher speed but requires dual supply or level-shifting for 5V systems | Targets high-throughput portable test equipment; not drop-in due to voltage and timing differences | Select when sampling rate >250ksps is required and system can accommodate 1.8V I/O or level translation |
| MAX11100ETE+ | 16-bit, 500ksps, internal reference, 2.7–3.6V supply; no external VREF flexibility, lower supply voltage range | Designed for ultra-low-power microcontroller-based systems with integrated LDOs; lacks 5V tolerance | Choose for energy-constrained IoT nodes where internal reference suffices and 5V interface is unnecessary |
Compared with ADS8860IDRCT and MAX11100ETE+, the LTC1864ACMS8#TRPBF offers unique value in 5V-native, differential-input, low-power precision acquisition-retaining pin compatibility with legacy LTC1860 designs while delivering superior SNR and temperature stability over its commercial-grade range.
Availability
LTC1864ACMS8#TRPBF is available at Aetrix Electronics and suitable for portable instrumentation, industrial sensor interfaces, and isolated remote I/O systems requiring stable component supply, long-term lifecycle support, and guaranteed commercial-temperature performance.
Supply support for LTC1864ACMS8#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 semiconductors, serving industrial, automotive, communications, and healthcare markets.
The LTC1864ACMS8#TRPBF belongs to ADI's legacy Linear Technology precision data acquisition portfolio, engineered specifically for low-power, high-resolution measurement in space- and energy-constrained embedded systems.
FAQ
What is the maximum sampling frequency of the LTC1864ACMS8#TRPBF?
The LTC1864ACMS8#TRPBF achieves a maximum sampling frequency of 250ksps under recommended operating conditions (VCC = 4.75V–5.25V, fSCK ≤ 20MHz). At this rate, conversion time is 2.75–3.2 μs, and supply current remains at 850μA typical. Performance is fully specified across the 0°C to 70°C commercial temperature range for the LTC1864ACMS8#TRPBF variant.
Does the LTC1864ACMS8#TRPBF support single-ended input configurations?
No-the LTC1864ACMS8#TRPBF is strictly a true differential-input ADC with dedicated IN+ and IN− pins. It does not support single-ended operation or internal MUX selection. For single-ended or dual-channel capability, the pin-compatible LTC1865 family (e.g., LTC1865ACMS#TRPBF) must be used instead. The LTC1864ACMS8#TRPBF transfer function is defined solely as VIN = IN+ − IN−.
What reference voltage range is supported by the LTC1864ACMS8#TRPBF?
The LTC1864ACMS8#TRPBF supports an external reference voltage range of 1V to VCC (5V), enabling flexible full-scale spans without external amplification. This allows direct digitization of low-level sensor outputs (e.g., 10mV/V bridge signals scaled to 1V) while maintaining 16-bit resolution. The VREF pin must be bypassed with ≥1μF low-ESR capacitor to AGND for optimal noise performance.
How does the auto-shutdown feature work on the LTC1864ACMS8#TRPBF?
The LTC1864ACMS8#TRPBF automatically enters low-power shutdown mode when the CONV pin is held high after conversion completion. In this state, supply current drops to 2μA at 1ksps sampling, scaling sublinearly with reduced throughput. No external control logic or register writes are needed-power management is fully hardware-driven via the CONV signal timing, simplifying firmware and reducing system-level power overhead.
Is the LTC1864ACMS8#TRPBF pin-compatible with earlier 12-bit versions?
Yes-the LTC1864ACMS8#TRPBF is pin-compatible with the 12-bit LTC1860 and LTC1861 families in the same MSOP-8 package. This enables seamless 16-bit resolution upgrades in existing designs without PCB layout changes or connector modifications. Firmware updates may be required to handle the extended 16-bit data word, but the SCK/SDO/CONV interface timing and electrical behavior remain consistent.
LTC1864ACMS8#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:
- 16
- Sampling Rate (Per Second):
- 250k
- Number of Inputs:
- 1
- Input Type:
- 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:
- -
LTC1864ACMS8#TRPBF FAQ
1.How can I place an order for LTC1864ACMS8#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC1864ACMS8#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 LTC1864ACMS8#TRPBF reliable?
The price and inventory of LTC1864ACMS8#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC1864ACMS8#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC1864ACMS8#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC1864ACMS8#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC1864ACMS8#TRPBF?
LTC1864ACMS8#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC1864ACMS8#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 LTC1864ACMS8#TRPBF?
For technical support, including LTC1864ACMS8#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC1864ACMS8#TRPBF requirements.
6.How does Aetrix verify that LTC1864ACMS8#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC1864ACMS8#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 LTC1864ACMS8#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC1864ACMS8#TRPBF?
All LTC1864ACMS8#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC1864ACMS8#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 LTC1864ACMS8#TRPBF part is unused and in its original packaging.
Return procedure for LTC1864ACMS8#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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