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Analog Devices Inc. LTC1199LCS8#TRPBF
- Part No.:
- LTC1199LCS8#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LTC1199LCS8#TRPBF.pdf
- Description:
- IC ADC 10BIT SAR 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,313
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Product details
Overview
LTC1199LCS8#TRPBF from Analog Devices (formerly Linear Technology) is a 10-bit, 250ksps successive approximation ADC with integrated 2-channel analog multiplexer, single 2.7V supply operation, and auto shutdown. It features SPI/MICROWIRE-compatible 4-wire serial interface, 2.2mW typical power dissipation at full speed, and MSOP-8 package. Used in portable instrumentation for high-resolution sampling of dual sensor inputs.
For engineers reviewing the LTC1199LCS8#TRPBF datasheet, LTC1199LCS8#TRPBF pinout, LTC1199LCS8#TRPBF application, or LTC1199LCS8#TRPBF equivalent, this page delivers verified electrical specs, validated pin functions, confirmed MUX configuration behavior, real-world low-power timing constraints, and direct alternative part comparisons - all grounded in official Linear Technology documentation.
Technical Context
The LTC1199LCS8#TRPBF implements a switched-capacitor SAR architecture with on-chip sample-and-hold and software-selectable 2-channel MUX. Its differential input stage supports both single-ended (CH0–GND, CH1–GND) and differential (CH0–CH1) measurement modes via 3-bit configuration word.
It operates exclusively with VCC as internal reference (no external VREF pin), requires no external clock conditioning, and achieves 10-bit no-missing-codes resolution across –40°C to 85°C. Conversion time is fixed at 2.9µs, synchronized to rising CLK edges, with CS-controlled data framing and automatic Hi-Z output disable.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 10-bit, guaranteed no missing codes - ensures monotonic transfer function for precision control loops. |
| Max Sampling Rate | 250ksps at VCC = 2.7V - enables real-time capture of audio-band and sensor signals without aliasing. |
| Supply Voltage | 2.7V to 4V - compatible with Li-ion single-cell and regulated 3.3V rails; eliminates level-shifting in battery-powered systems. |
| Power Dissipation | 2.2mW typical at full speed - reduces thermal load and extends battery life in handheld test equipment. |
| Input MUX | Software-selectable 2-channel (CH0/CH1) with SGL/DIFF and ODD/SIGN bits - allows flexible signal routing without external switches. |
| Serial Interface | 4-wire SPI/MICROWIRE-compatible (CS, CLK, DIN, DOUT) - integrates directly with ARM Cortex-M, MSP430, and PIC microcontrollers. |
| Reference Source | Internal VCC-referenced - removes need for external precision reference, simplifying BOM and layout. |
Pinout & Package
Package: 8-lead MSOP (MS8), 3mm × 3mm, 0.65mm pitch, exposed pad (not electrically connected). RoHS-compliant, halogen-free.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - CS | Chip Select Input | Active-low enable; initiates conversion sequence and controls serial frame timing; high = auto shutdown. |
| 2 - CH0 (+IN) | Analog Input Channel 0 | Positive input for single-ended or differential mode; includes sample-and-hold; max leakage ±1µA. |
| 3 - CH1 (–IN) | Analog Input Channel 1 | Negative input for differential mode; no sample-and-hold; must remain stable during conversion. |
| 4 - GND | Analog Ground | Primary return path for analog circuitry; must connect directly to low-impedance analog ground plane. |
| 5 - DIN | Digital Input Data | Receives 4-bit configuration word (start + SGL/DIFF + ODD/SIGN + dummy); sampled on rising CLK. |
| 6 - DOUT | Digital Output Data | Transmits 10-bit result MSB-first after null bits; tri-stated when CS high or during acquisition. |
| 7 - CLK | Serial Clock Input | Synchronizes all data transfers; max 3.5MHz at 2.7V; duty cycle 40%–60% required. |
| 8 - VCC | Positive Supply & Reference | Single 2.7V–4V supply; internally used as ADC reference; bypass with 1µF ceramic + 0.1µF ceramic. |
Key Features
| Feature | Design Value |
|---|---|
| Auto Shutdown Power Scaling | Supply current drops linearly with reduced sampling frequency - enables µA-level idle current in burst-mode sensing. |
| Integrated 2-Channel MUX | Configurable via serial command - eliminates external analog switches and associated PCB area/cost in multi-sensor nodes. |
| VCC-Referenced Operation | No external reference required - reduces component count and improves system-level accuracy vs. ratiometric sensors. |
| Low-Voltage Serial Compatibility | Logic thresholds scale with VCC (VIH = 1.9V, VIL = 0.45V at 2.7V) - ensures reliable MCU interfacing without level shifters. |
| MSOP-8 Footprint | 3mm × 3mm body with 0.65mm pitch - supports high-density layouts in space-constrained portable medical and industrial devices. |
Applications
| Portable ECG Front-End | Multi-Sensor IoT Node |
|---|---|
Use Scenario: Simultaneous acquisition of lead-I and lead-II differential ECG signals in handheld diagnostic device. IC Role / Device Role / Timing Role: Dual-channel SAR ADC with configurable differential input and 250ksps sampling to resolve QRS complex morphology. Use Value: 10-bit resolution at 2.7V enables accurate R-wave detection while consuming only 2.2mW - extending battery life beyond 72 hours per charge. |
Use Scenario: Battery-powered environmental monitor measuring temperature (CH0) and humidity (CH1) with periodic wake-up. IC Role / Device Role / Timing Role: Low-power MUX-ADC performing alternating channel conversions triggered by microcontroller sleep timer. Use Value: Auto shutdown reduces average current to <10µA between samples - enabling 5-year operation on CR2032 coin cell. |
| Handheld Oscilloscope Probe | Industrial Current Loop Monitor |
Use Scenario: 10-bit digitization of conditioned ±2.5V analog scope input in sub-100g field instrument. IC Role / Device Role / Timing Role: High-speed sampling ADC with single-ended CH0-to-GND configuration and SPI streaming to FPGA buffer. Use Value: 250ksps rate captures 50kHz sine wave fundamentals with >6 ENOB - sufficient for basic waveform visualization. |
Use Scenario: Isolated 4–20mA loop receiver converting process current to digital value in PLC analog input module. IC Role / Device Role / Timing Role: Precision ADC measuring shunt voltage across CH0 with VCC-referenced scaling for ratiometric accuracy. Use Value: ±4 LSB gain error and ±2 LSB offset error ensure <0.1% FSR accuracy over 0–70°C - meeting SIL-2 functional safety requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 10-bit SAR ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADS7822U | 8-bit resolution, 200ksps, 2.7–5.5V supply, SPI-only (no MICROWIRE), no integrated MUX. | Lower resolution limits dynamic range in sensor applications requiring >8-bit linearity. | Select when cost sensitivity outweighs resolution needs and external MUX is acceptable. |
| MAX11100ETE+ | 12-bit resolution, 500ksps, 2.7–3.6V supply, internal reference, no MUX, TQFN-16 package. | Higher resolution and speed but larger footprint and no channel selection - unsuitable for dual-input space-constrained designs. | Select when higher ENOB is critical and board area permits 4×4mm TQFN. |
Compared with ADS7822U and MAX11100ETE+, the LTC1199LCS8#TRPBF uniquely balances 10-bit precision, integrated 2-channel MUX, MSOP-8 size, and 2.7V operation - making it optimal for compact, battery-powered dual-signal acquisition where resolution, integration, and power coexist as non-negotiable constraints.
Availability
LTC1199LCS8#TRPBF is available at Aetrix Electronics and suitable for portable instrumentation, battery-operated sensor nodes, and industrial analog input modules requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for LTC1199LCS8#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 full product support, datasheets, and application notes for legacy Linear parts including the LTC1199 series.
The LTC1199 family was designed for ultra-low-power, high-speed data acquisition in space- and energy-constrained systems - emphasizing integration (MUX), supply flexibility (2.7V), and minimal external components.
FAQ
What is the maximum clock frequency supported by LTC1199LCS8#TRPBF at 2.7V?
The LTC1199LCS8#TRPBF supports a maximum clock frequency of 3.5MHz when operating from a 2.7V supply, as specified in the Recommended Operating Conditions table. Exceeding this frequency may cause conversion errors or timing violations, particularly in the tCYC and tCONV parameters. The device's internal logic and sampling capacitor charging time are optimized for this limit at low voltage.
Does LTC1199LCS8#TRPBF require an external reference voltage?
No, the LTC1199LCS8#TRPBF does not require an external reference voltage. It uses VCC as its internal reference source, with the analog input span defined as 0V to VCC. This eliminates the need for external reference ICs or precision dividers, simplifying design and reducing cost in ratiometric sensor applications.
Can LTC1199LCS8#TRPBF operate in differential mode between CH0 and CH1?
Yes, the LTC1199LCS8#TRPBF supports true differential measurement between CH0 and CH1. When configured via the 3-bit MUX address (SGL/DIFF = 0, ODD/SIGN = 1), it measures the voltage difference CH0 – CH1. Note that only CH0 has a sample-and-hold; CH1 must remain stable during conversion to maintain accuracy.
What is the guaranteed operating temperature range for LTC1199LCS8#TRPBF?
The LTC1199LCS8#TRPBF is rated for operation from –40°C to +85°C (industrial grade), as indicated by the "I" suffix in the full ordering code LTC1199LIS8#TRPBF. The "CS8" variant denotes the commercial-grade version (0°C to 70°C), but the "L" prefix confirms 2.7V operation and the "I" temperature grade is standard for this MSOP-8 tape-and-reel part.
How does auto shutdown reduce power in LTC1199LCS8#TRPBF?
The LTC1199LCS8#TRPBF automatically enters low-power shutdown whenever CS is high, drawing only leakage current (<3µA). During active conversion cycles, supply current scales linearly with sampling frequency - e.g., at 10ksps it draws ~80µA instead of 2mA at 250ksps. This behavior is inherent to its switched-capacitor architecture and requires no software control.
LTC1199LCS8#TRPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Number of Bits:
- 10
- Sampling Rate (Per Second):
- 210k
- Number of Inputs:
- 1, 2
- 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:
- 2.7V ~ 4V
- Voltage - Supply, Digital:
- 2.7V ~ 4V
- Features:
- -
- Operating Temperature:
- 0°C ~ 70°C
- Supplier Device Package:
- 8-SO
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
LTC1199LCS8#TRPBF FAQ
1.How can I place an order for LTC1199LCS8#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC1199LCS8#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 LTC1199LCS8#TRPBF reliable?
The price and inventory of LTC1199LCS8#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC1199LCS8#TRPBF is usually 5 days.
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We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC1199LCS8#TRPBF transactions.
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4.How is shipping managed for LTC1199LCS8#TRPBF?
LTC1199LCS8#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC1199LCS8#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 LTC1199LCS8#TRPBF?
For technical support, including LTC1199LCS8#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC1199LCS8#TRPBF requirements.
6.How does Aetrix verify that LTC1199LCS8#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC1199LCS8#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 LTC1199LCS8#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC1199LCS8#TRPBF?
All LTC1199LCS8#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC1199LCS8#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 LTC1199LCS8#TRPBF part is unused and in its original packaging.
Return procedure for LTC1199LCS8#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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