My Inquiry
My Account
Analog Devices Inc. LTC1864CS8#PBF
- Part No.:
- LTC1864CS8#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LTC1864CS8#PBF.pdf
- Description:
- IC ADC 16BIT SAR 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:781
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LTC1864CS8#PBF from Analog Devices (formerly Linear Technology) is a 16-bit, 250ksps successive approximation ADC with true differential analog inputs, single 5V supply operation, and SPI/MICROWIRE-compatible serial interface in an 8-lead SO package. It features auto shutdown (850μA typical at full speed, dropping to 2μA at 1ksps), 87dB SNR, ±2mV offset error, and guaranteed operation from 0°C to 70°C - ideal for portable instrumentation requiring high resolution and low power.
For engineers reviewing the LTC1864CS8#PBF datasheet, LTC1864CS8#PBF pinout, LTC1864CS8#PBF application, or LTC1864CS8#PBF equivalent, key selection criteria include its differential input architecture, VREF-tied-to-VCC configuration in SO-8, 2.75μs conversion time, 125kHz full linear bandwidth, and compatibility with ratiometric sensing or external reference designs.
Technical Context
The LTC1864CS8#PBF implements a switched-capacitor SAR architecture with integrated sample-and-hold, supporting unipolar differential input ranges up to VREF (internally tied to VCC in SO-8). Its timing is controlled by a rising-edge-activated CONV signal and synchronized serial data transfer via SCK/SDO.
It operates exclusively in 1-channel mode (no MUX), requires no SDI input (unlike LTC1865), and uses a fixed VREF = VCC configuration - eliminating external reference components but limiting full-scale span to 4.75V–5.25V per operating conditions. Power management is fully automatic: high-CONV enables sleep mode between conversions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 16-bit - delivers 65,536 discrete output codes for high-precision measurement |
| Max Sampling Rate | 250ksps - supports real-time acquisition of signals up to 125kHz full linear bandwidth |
| Supply Current | 850μA typ at 250ksps; drops to 2μA at 1ksps - enables battery-powered operation with dynamic power scaling |
| Signal-to-Noise Ratio | 87dB - ensures >14 effective bits of resolution under DC/low-frequency conditions |
| INL Error | ±8 LSB max - guarantees monotonicity and accurate end-point linearity across full temperature range |
| Conversion Time | 2.75μs typ - defines minimum inter-conversion interval and maximum achievable throughput |
| Input Voltage Range | Differential: 0V to VCC (4.75V–5.25V); absolute IN+/IN−: –0.05V to VCC + 0.05V - allows direct connection to op-amp buffers without level-shifting |
Pinout & Package
Package: 8-lead plastic SO (Small Outline) with θJA = 175°C/W, JEDEC MS-012AC compliant, lead-free finish (PBF).
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| VREF (1) | Reference Input | Internally tied to VCC in SO-8 package; sets full-scale span equal to supply voltage - no external reference required |
| IN+ (2) | Positive Analog Input | Differential input terminal; sampled simultaneously with IN− for common-mode noise rejection |
| IN− (3) | Negative Analog Input | Differential input terminal; zero code occurs when IN+ − IN− = 0V |
| GND (4) | Analog Ground | Single ground reference for analog section; must connect directly to low-impedance analog ground plane |
| CONV (5) | Convert Control Input | Rising edge initiates conversion; held high after completion forces auto-sleep mode |
| SDO (6) | Serial Data Output | 3-wire SPI-compatible output; 16-bit result shifted out MSB-first on falling SCK edge |
| SCK (7) | Serial Clock Input | Master-controlled clock synchronizing data transfer; rising edge captures data, falling edge outputs |
| VCC (8) | Positive Supply | Single 4.75V–5.25V supply; bypassing with ≥1μF tantalum to GND is mandatory for specified AC performance |
Key Features
| Feature | Design Value |
|---|---|
| True Differential Input Architecture | Rejects common-mode noise on IN+/IN− pair - eliminates need for external instrumentation amplifiers in noisy environments |
| Auto Shutdown Between Conversions | Reduces average current from 850μA to 2μA at 1ksps - extends battery life in intermittent-sampling applications |
| VREF = VCC Internal Tie (SO-8) | Removes external reference IC and associated layout complexity - simplifies BOM and PCB routing |
| Guaranteed Operation to +70°C | Validated performance across commercial temperature range - suitable for industrial control panels and embedded test equipment |
| High Impedance Analog Inputs | ±1μA leakage current - enables direct connection to high-output-impedance sensors (e.g., thermocouples, RTDs with gain stages) |
Applications
| Portable Data Loggers | Industrial Sensor Signal Conditioning |
|---|---|
Use Scenario: Battery-powered environmental monitors acquiring temperature, pressure, and humidity over extended periods. IC Role / Device Role / Timing Role: Primary 16-bit ADC digitizing conditioned analog sensor outputs 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: PLC analog input modules converting 4–20mA or 0–10V field signals into digital values for microcontroller processing. IC Role / Device Role / Timing Role: High-accuracy front-end ADC interfacing with op-amp signal conditioning circuits before isolation barriers. Use Value: ±2mV offset error and 87dB SNR ensure <0.01% total measurement uncertainty across 0–70°C ambient range. |
| Isolated Remote Monitoring Systems | Medical Instrumentation Front Ends |
Use Scenario: Distributed sensor nodes transmitting digitized data across opto-isolated or transformer-coupled links. IC Role / Device Role / Timing Role: Low-power, isolated-side ADC feeding serial data to isolated UART or SPI transceivers. Use Value: 2.75μs conversion time and deterministic timing allow tight synchronization with isolated clock domains. | Use Scenario: Portable ECG or EEG devices requiring high-fidelity biopotential signal acquisition. IC Role / Device Role / Timing Role: Precision ADC capturing differential electrode signals with rail-to-rail input capability (IN− grounded, IN+ = 0–VCC). Use Value: True differential input and 125kHz full linear bandwidth preserve waveform fidelity for diagnostic-grade signal analysis. |
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 |
|---|---|---|---|
| ADS8325IPW | 16-bit, 100ksps, SPI interface, 2.7–5.5V supply, internal reference option; no auto shutdown | Lower sampling rate but wider supply range and optional internal reference - better for mixed-voltage systems | Select when system lacks stable 5V rail or requires internal reference flexibility; trade-off is 2.5× slower throughput |
| MAX11206ETE+ | 16-bit, 125ksps, SPI, 2.7–3.6V supply, built-in PGA (1–128×), internal reference | Integrated programmable gain amplifier enables direct connection to mV-level sensors - eliminates external gain stage | Choose when measuring low-amplitude signals (e.g., strain gauges) without external op-amps; incompatible with 5V-only systems |
Compared with ADS8325IPW and MAX11206ETE+, the LTC1864CS8#PBF delivers the highest sampling rate (250ksps) and lowest active current (850μA) in a 5V-only, no-PGA, no-internal-reference configuration - making it optimal for cost-sensitive, high-throughput, battery-conscious designs where external reference and gain are already implemented.
Availability
LTC1864CS8#PBF is available at Aetrix Electronics and suitable for portable instrumentation, industrial sensor interfaces, and isolated remote monitoring systems requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for LTC1864CS8#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 LTC1864CS8#PBF belongs to ADI's precision data acquisition product line, designed specifically for low-power, high-resolution measurement in space- and energy-constrained embedded systems - emphasizing simplicity, reliability, and ease of integration.
FAQ
What is the reference voltage configuration for LTC1864CS8#PBF?
The LTC1864CS8#PBF has its VREF pin internally tied to VCC in the SO-8 package, meaning the full-scale input range is fixed to the supply voltage (4.75V–5.25V). This eliminates the need for an external reference but precludes independent reference scaling. The LTC1864CS8#PBF does not support external VREF connection in this package variant.
Does LTC1864CS8#PBF support multiple analog input channels?
No. The LTC1864CS8#PBF is a single-channel device with true differential inputs (IN+, IN−). Unlike the LTC1865 family, it contains no multiplexer and cannot switch between input sources. Its function is strictly dedicated to high-accuracy conversion of one differential pair per conversion cycle.
What is the minimum setup time required for the CONV signal relative to the first SCK edge?
The LTC1864CS8#PBF requires a minimum setup time (tsuCONV) of 30ns between the falling edge of CONV and the first rising edge of SCK to ensure reliable data capture. This timing parameter is guaranteed across the full 0°C to 70°C operating range and must be met in PCB layout and controller firmware timing loops.
Can LTC1864CS8#PBF operate with a 3.3V supply?
No. The LTC1864CS8#PBF is specified only for 4.75V to 5.25V single-supply operation. Its internal circuitry, including the reference tie and comparator thresholds, is optimized for 5V. Attempting 3.3V operation will result in undefined behavior, failed conversions, or permanent damage due to violation of Absolute Maximum Ratings.
How does the auto shutdown feature of LTC1864CS8#PBF reduce system power consumption?
The LTC1864CS8#PBF automatically enters ultra-low-power sleep mode (2μA typical) whenever the CONV pin remains high after conversion completes. This eliminates idle current draw between samples - critical for duty-cycled applications like periodic sensor polling. The LTC1864CS8#PBF resumes full operation within nanoseconds upon the next CONV rising edge, with no wake-up latency penalty.
LTC1864CS8#PBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- 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-SO
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
LTC1864CS8#PBF FAQ
1.How can I place an order for LTC1864CS8#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC1864CS8#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 LTC1864CS8#PBF reliable?
The price and inventory of LTC1864CS8#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC1864CS8#PBF is usually 5 days.
3.What payment methods are accepted for LTC1864CS8#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC1864CS8#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC1864CS8#PBF?
LTC1864CS8#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC1864CS8#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 LTC1864CS8#PBF?
For technical support, including LTC1864CS8#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC1864CS8#PBF requirements.
6.How does Aetrix verify that LTC1864CS8#PBF is sourced from the original manufacturer or authorized distributors?
All LTC1864CS8#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 LTC1864CS8#PBF meets industry standards.
7.What is the process for return or replacement of LTC1864CS8#PBF?
All LTC1864CS8#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC1864CS8#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 LTC1864CS8#PBF part is unused and in its original packaging.
Return procedure for LTC1864CS8#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LTC1864CS8#PBF Tags
-
ADC081C021CIMKX/NOPB
Texas Instruments
-
MCP3021A5T-E/OT
Microchip Technology
-
TLA2024IRUGR
Texas Instruments
-
MCP3221A5T-E/OT
Microchip Technology
-
MCP3221A5T-I/OT
Microchip Technology
-
MCP3221A4T-E/OT
Microchip Technology
-
MCP3221A6T-E/OT
Microchip Technology
-
MCP3221A0T-E/OT
Microchip Technology
-
MCP3221A1T-E/OT
Microchip Technology
-
ADC121S021CIMFX/NOPB
Texas Instruments
-
MCP3001-I/MS
Microchip Technology
-
MCP3001-I/SN
Microchip Technology
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
