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Analog Devices Inc. LTC1864LCMS8#TRPBF
- Part No.:
- LTC1864LCMS8#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
LTC1864LCMS8#TRPBF.pdf
- Description:
- IC ADC 16BIT SAR 8MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,258
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Product details
Overview
LTC1864LCMS8#TRPBF from Analog Devices (formerly Linear Technology) is a 16-bit, 150ksps successive approximation ADC with true differential analog input, single 3V supply operation, and MSOP-8 package. It features auto shutdown (10µA at 1ksps), 450µA typical supply current at full speed, SPI/MICROWIRE-compatible 3-wire serial interface, and external reference pin supporting 1V to VCC spans - ideal for precision, low-power data acquisition in portable instrumentation.
For engineers reviewing the LTC1864LCMS8#TRPBF datasheet, LTC1864LCMS8#TRPBF pinout, LTC1864LCMS8#TRPBF application, or LTC1864LCMS8#TRPBF equivalent, key selection criteria include its differential input architecture, guaranteed no missing codes over 14–15 bits, ±8 LSB INL, 82 dB SNR, and compatibility with rail-to-rail signal sources without external gain stages.
Technical Context
The LTC1864LCMS8#TRPBF implements a switched-capacitor SAR architecture with integrated sample-and-hold, operating exclusively on a single 2.7V–3.6V supply. Its conversion cycle is initiated by a rising edge on CONV, completes in 3.7–4.66 µs, and automatically enters sleep mode when CONV remains high post-conversion.
Analog inputs (IN+, IN−) are high-impedance and sampled simultaneously to reject common-mode noise; the external VREF pin sets full-scale range from 1V to VCC. Digital interface uses SCK-synchronized falling-edge data output on SDO, with no minimum data transfer rate requirement and full compatibility with standard SPI/MICROWIRE controllers.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 16-bit - delivers 65,536 discrete output codes for high-precision measurement |
| Sampling Rate | 150 ksps - supports real-time acquisition of signals up to ~20 kHz full-linear bandwidth |
| Supply Current | 450 µA typ at 150 ksps; drops to 10 µA at 1 ksps - enables battery life extension in portable systems |
| INL Error | ±8 LSB max - ensures monotonicity and accurate end-point linearity across temperature |
| SNR | 82 dB - supports >13.3 effective number of bits (ENOB) for clean signal digitization |
| Input Range | Differential 0 V to VREF - allows direct connection to bridge sensors or op-amp outputs without level-shifting |
| Reference Range | VREF = 1 V to VCC - accommodates low-voltage references or ratiometric sensing with supply rails |
Pinout & Package
Package: 8-lead plastic MSOP (MS8), 3.0 mm × 3.0 mm × 0.86 mm profile, lead pitch 0.65 mm, RoHS-compliant, tape-and-reel (#TRPBF).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VREF (Pin 1) | Reference Input | Defines full-scale span; must be low-noise and bypassed to GND with ≥1 µF capacitor |
| IN+ (Pin 2) | Differential Analog Input (+) | High-impedance sampling node; accepts voltage relative to IN− within (GND − 0.05 V) to (VCC + 0.05 V) |
| IN− (Pin 3) | Differential Analog Input (−) | Paired with IN+; simultaneous sampling enables common-mode rejection; range limited to GND to VCC/2 |
| GND (Pin 4) | Analog Ground | Primary return path for analog circuitry; requires low-inductance connection to analog ground plane |
| CONV (Pin 5) | Convert Control Input | Rising edge initiates conversion; low state enables SDO output; high state after conversion triggers auto-shutdown |
| SDO (Pin 6) | Serial Data Output | 16-bit result shifted out MSB-first on falling SCK edge; tri-stated when CONV is high |
| SCK (Pin 7) | Serial Clock Input | Synchronizes data transfer; supports up to 8 MHz clock frequency; no minimum rate required |
| VCC (Pin 8) | Positive Supply | 2.7 V to 3.6 V single supply; requires local 1 µF tantalum bypass to GND for stable conversion performance |
Key Features
| Feature | Design Value |
|---|---|
| Auto shutdown between conversions | Reduces supply current from 450 µA to 10 µA at 1 ksps - eliminates need for external power-gating logic |
| True differential input architecture | Rejects common-mode noise on IN+/IN− pair - enables accurate measurements in electrically noisy environments |
| No missing codes over full range | Guaranteed monotonicity from 0x0000 to 0xFFFF - essential for control-loop stability and metrology applications |
| Flexible reference support (1 V to VCC) | Permits use of low-voltage references or ratiometric configurations - simplifies sensor interface design |
| SPI/MICROWIRE-compatible interface | 3-wire serial protocol with no minimum clock rate - interoperable with microcontrollers, FPGAs, and DSPs without timing constraints |
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 conditioned analog sensor outputs with minimal power overhead. Use Value: 450 µA active current and 10 µA sleep current extend battery life to months; differential input rejects EMI from switching regulators. |
Use Scenario: Industrial field transmitter with galvanic isolation between sensor front-end and digital back-end. IC Role / Device Role / Timing Role: Isolated-side ADC converting analog process signals before transmission across opto- or capacitive barrier. Use Value: Single-supply 3V operation simplifies isolated power design; 16-bit resolution maintains accuracy despite isolation-induced noise. |
| Low-Power Battery Monitoring | Compact Signal Conditioning |
|
Use Scenario: Smart battery pack monitoring IC measuring cell voltages and temperature via precision resistive dividers. IC Role / Device Role / Timing Role: High-accuracy ADC capturing DC-coupled voltage levels with <±8 LSB INL error. Use Value: External VREF support enables ratiometric measurement against stable reference - eliminates supply drift errors. |
Use Scenario: Embedded system integrating op-amp gain stage and ADC in space-constrained medical sensor module. IC Role / Device Role / Timing Role: Final-stage digitizer accepting amplified, filtered analog signals directly at its high-Z inputs. Use Value: 12 pF input capacitance and fast settling enable direct connection to low-output-impedance op-amps (e.g., LT1469) without buffer. |
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, 1 MSPS, SPI interface, 1.8V–3.6V supply, internal reference option, no auto-shutdown | Higher speed but higher power (1.2 mA); lacks automatic power-down - requires external control for low-duty-cycle operation | Select when sampling rate >150 ksps is required and system can manage active power budget. |
| LTC2311CDHC-16#TRPBF | 16-bit, 500 ksps, pseudo-differential input, 2.5V–5.5V supply, no external VREF pin, 1.5 mW dissipation | Single-ended input only; fixed 2.5V internal reference; incompatible pinout and interface timing - not drop-in | Select for cost-sensitive designs where differential input is unnecessary and higher throughput justifies larger package. |
Compared with ADS8860IDRCT and LTC2311CDHC-16#TRPBF, the LTC1864LCMS8#TRPBF uniquely balances ultra-low quiescent current, true differential input, flexible external reference, and MSOP-8 footprint - making it optimal for energy-constrained, noise-immune, space-limited measurement nodes.
Availability
LTC1864LCMS8#TRPBF is available at Aetrix Electronics and suitable for portable instrumentation, isolated data acquisition, and low-power battery monitoring requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for LTC1864LCMS8#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 LTC1864LCMS8#TRPBF belongs to ADI's legacy Linear Technology precision data converter family, designed specifically for low-power, high-resolution measurement in compact, battery-operated, and noise-sensitive applications.
FAQ
What is the maximum sampling frequency of the LTC1864LCMS8#TRPBF?
The LTC1864LCMS8#TRPBF supports a maximum sampling frequency of 150 ksps, with guaranteed performance including 82 dB SNR and ±8 LSB INL at this rate. Conversion time is specified as 3.7–4.66 µs, enabling precise timing control in deterministic data acquisition systems.
Does the LTC1864LCMS8#TRPBF require an external reference voltage?
Yes - the LTC1864LCMS8#TRPBF requires an external reference applied to the VREF pin (Pin 1). It supports reference voltages from 1 V to VCC (3.6 V max), enabling ratiometric operation or use with precision references like the LT1460. The SO-8 version of the LTC1865L ties VREF internally to VCC, but the LTC1864LCMS8#TRPBF does not.
Can the LTC1864LCMS8#TRPBF operate from a 2.5V supply?
No - the LTC1864LCMS8#TRPBF has a minimum supply voltage of 2.7 V per Absolute Maximum Ratings and Recommended Operating Conditions. Operation below 2.7 V is not characterized and may result in degraded INL, missing codes, or failure to meet timing specifications such as tCONV or fSCK.
What is the purpose of the CONV pin on the LTC1864LCMS8#TRPBF?
The CONV pin (Pin 5) serves dual functions: a rising edge initiates conversion, and holding it high after conversion completion places the LTC1864LCMS8#TRPBF into auto-shutdown mode (10 µA typical). Pulling CONV low after conversion enables the SDO pin to output the 16-bit result synchronized to SCK.
Is the LTC1864LCMS8#TRPBF pin-compatible with any 12-bit alternatives?
Yes - the LTC1864LCMS8#TRPBF is pin-compatible with the 12-bit LTC1860L/LTC1861L family in the same MSOP-8 package. This allows straightforward resolution upgrades in existing designs without PCB layout changes, provided the host firmware handles the extended 16-bit data word and updated timing requirements.
LTC1864LCMS8#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):
- 150k
- 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
- Voltage - Supply, Analog:
- 2.7V ~ 3.6V
- Voltage - Supply, Digital:
- 2.7V ~ 3.6V
- Features:
- -
- Operating Temperature:
- 0°C ~ 70°C
- Supplier Device Package:
- 8-MSOP
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
LTC1864LCMS8#TRPBF FAQ
1.How can I place an order for LTC1864LCMS8#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC1864LCMS8#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 LTC1864LCMS8#TRPBF reliable?
The price and inventory of LTC1864LCMS8#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC1864LCMS8#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC1864LCMS8#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC1864LCMS8#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC1864LCMS8#TRPBF?
LTC1864LCMS8#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC1864LCMS8#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 LTC1864LCMS8#TRPBF?
For technical support, including LTC1864LCMS8#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC1864LCMS8#TRPBF requirements.
6.How does Aetrix verify that LTC1864LCMS8#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC1864LCMS8#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 LTC1864LCMS8#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC1864LCMS8#TRPBF?
All LTC1864LCMS8#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC1864LCMS8#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 LTC1864LCMS8#TRPBF part is unused and in its original packaging.
Return procedure for LTC1864LCMS8#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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