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Analog Devices Inc. LTC1199CMS8#TRPBF
- Part No.:
- LTC1199CMS8#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
LTC1199CMS8#TRPBF.pdf
- Description:
- IC ADC 10BIT SAR 8MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,210
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Product details
Overview
LTC1199CMS8#TRPBF from Analog Devices (formerly Linear Technology) is a 10-bit, 250ksps successive approximation ADC with integrated 2-channel analog multiplexer and auto shutdown. It operates from a single 2.7V supply, consumes only 2.2mW at full speed, and uses SPI/MICROWIRE-compatible 4-wire serial I/O in an 8-pin MSOP package - ideal for battery-powered data acquisition in portable instrumentation.
For engineers reviewing the LTC1199CMS8#TRPBF datasheet, LTC1199CMS8#TRPBF pinout, LTC1199CMS8#TRPBF application, or LTC1199CMS8#TRPBF equivalent, key selection criteria include its software-selectable MUX configuration, 2.7V operation with internal VREF tied to VCC, guaranteed no missing codes, and linear power-down scaling with sampling rate - all validated across –40°C to 85°C industrial temperature range.
Technical Context
The LTC1199CMS8#TRPBF implements a switched-capacitor SAR architecture with on-chip sample-and-hold and a configurable 2-channel MUX. Its serial interface requires a start bit followed by 3-bit control word (SGL/DIFF, ODD/SIGN, DUMMY) to select input mode and channel before conversion.
It features internal reference tied to VCC, eliminating external reference components; supports unipolar transfer only; and achieves 58dB SNR at 50kHz input with –60dB THD. Conversion time is fixed at 2.9µs, and timing parameters (e.g., tCONV, tdDO, tdis) are fully specified over temperature and supply voltage.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 10-bit, guaranteed no missing codes - ensures monotonicity and deterministic code transitions in closed-loop control. |
| Max Sampling Rate | 250ksps at VCC = 2.7V - enables real-time capture of signals up to ~125kHz Nyquist bandwidth. |
| Supply Voltage | 2.7V to 4V - compatible with Li-ion single-cell and low-voltage embedded systems without level-shifting. |
| Power Dissipation | 2.2mW typical at 250ksps - allows continuous high-speed sampling in thermally constrained PCB layouts. |
| Reference | Internal, tied to VCC - removes need for external reference IC or resistor divider, reducing BOM count and layout area. |
| INL / DNL | ±1LSB / ±1LSB max - supports precision measurement applications requiring <0.1% linearity error. |
| Operating Temp | –40°C to +85°C - qualified for industrial environments including motor control and sensor hubs. |
Pinout & Package
Package: 8-lead plastic MSOP (MS8), 3mm × 3mm, 0.65mm pitch, exposed pad (not electrically connected).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 CS | Chip Select Input | Active-low enable; initiates conversion sequence and powers up serial interface - must be held high between conversions for auto shutdown. |
| 2 CH0 (+IN) | Analog Input Channel 0 | Positive input for single-ended or differential mode; includes sample-and-hold - connects directly to sensors or signal sources ≤20kΩ source impedance. |
| 3 CH1 (–IN) | Analog Input Channel 1 | Positive/negative input per MUX configuration; no sample-and-hold - requires stable voltage during conversion window (tSMPL = 1.5 CLK cycles). |
| 4 GND | Analog Ground | Primary return path for analog circuitry; must connect to low-impedance analog ground plane to maintain 58dB SNR performance. |
| 5 DIN | Digital Input | Receives 4-bit control word (start + SGL/DIFF + ODD/SIGN + DUMMY); tolerant of 0.45V/1.9V logic thresholds at 2.7V supply. |
| 6 DOUT | Digital Output | MSB-first 10-bit result + 2 null bits; tri-state when CS high; VOH = 2.3V min at 360µA load - interfaces directly with 2.7V µCs. |
| 7 CLK | Serial Clock Input | Synchronizes all data transfers; max 3.5MHz at 2.7V; 40%–60% duty cycle required - defines total cycle time (16 CLKs per frame). |
| 8 VCC | Positive Supply | 2.7V–4V single supply; powers analog core, digital interface, and serves as internal reference - requires 1µF ceramic + 10µF tantalum bypassing. |
Key Features
| Feature | Design Value |
|---|---|
| Software-selectable 2-channel MUX | Configurable via 3-bit control word to measure CH0–GND, CH1–GND, CH0–CH1, or CH1–CH0 - eliminates external analog switches in multi-sensor systems. |
| Auto shutdown with linear power scaling | Supply current drops linearly from 2mA at 250ksps to sub-µA in shutdown - enables adaptive sampling rate control for energy-per-sample optimization. |
| SPI/MICROWIRE-compatible serial interface | 4-wire half-duplex protocol with start-bit framing - interoperates with standard MCU peripherals without glue logic or firmware translation layers. |
| Single 2.7V supply with internal VREF | VREF internally tied to VCC - removes external reference IC, reduces component count, and avoids reference drift vs. supply variation. |
| Guaranteed no missing codes | Validated across full temperature and supply range - essential for position encoders, servo feedback, and other safety-critical closed-loop systems. |
Applications
| Portable Data Loggers | Battery-Powered Sensor Nodes |
|---|---|
|
Use Scenario: Continuous monitoring of temperature, pressure, and humidity in handheld environmental meters with 72-hour battery life. IC Role / Device Role / Timing Role: Primary ADC acquiring synchronized multi-channel analog inputs at 100ksps, managed by low-power MCU via SPI. Use Value: 2.2mW active power and auto shutdown extend runtime; 2.7V operation matches Li-ion discharge curve; MSOP package enables compact 2-layer PCB design. |
Use Scenario: Wireless IoT node measuring vibration (accelerometer), ambient light (photodiode), and battery voltage in predictive maintenance equipment. IC Role / Device Role / Timing Role: Central analog front-end converting three independent sensor outputs using software-configured MUX sequencing. Use Value: Single-supply operation eliminates level shifters; no missing codes ensures reliable threshold detection; 8-pin MSOP simplifies automated assembly. |
| Industrial Motor Control Feedback | Compact Medical Instrumentation |
|
Use Scenario: Real-time current sensing and rotor position interpolation in BLDC motor drives operating in harsh factory environments. IC Role / Device Role / Timing Role: High-speed ADC capturing phase current waveforms at 250ksps, interfaced to FPGA for field-oriented control loop. Use Value: –40°C to +85°C rating ensures reliability near motors; 58dB SNR supports 9-bit ENOB for torque ripple analysis; fast 2.9µs conversion enables tight PWM synchronization. |
Use Scenario: Portable ECG monitor acquiring lead-II differential signals with >80dB common-mode rejection and low noise amplification. IC Role / Device Role / Timing Role: Precision ADC digitizing conditioned biopotential signals after analog filtering and gain stages. Use Value: ±1LSB INL/DNL preserves waveform fidelity; 2.7V compatibility enables direct connection to ultra-low-power AFE; small MSOP footprint saves space in wearable form factor. |
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 | 2.7V–5.25V supply; 200ksps; SPI-only (no MICROWIRE); no internal VREF - requires external reference. | Requires additional reference IC and tighter layout for reference routing; better suited for 5V systems with existing reference infrastructure. | Select if system already uses precision external reference and needs slightly lower INL (±0.5LSB). |
| MAX1113ECM+ | 2.7V–3.6V supply; 100ksps; 3-wire interface; internal reference selectable between VCC and external pin. | Limited to lower sampling rates; lacks MUX - requires external analog switch for multi-channel use. | Select for cost-sensitive, lower-speed applications where MUX functionality is unnecessary and board space is less constrained. |
Compared with ADS7822U and MAX1113ECM+, the LTC1199CMS8#TRPBF uniquely combines 250ksps speed, integrated MUX, internal VREF, and true 2.7V operation - making it optimal for space- and power-constrained multi-sensor systems requiring minimal external components.
Availability
LTC1199CMS8#TRPBF is available at Aetrix Electronics and suitable for portable instrumentation, battery-powered sensor nodes, and industrial motor control applications requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for LTC1199CMS8#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 LTC1199 family was designed by Linear Technology (acquired by ADI in 2017) specifically for ultra-low-power, high-speed data acquisition in space-constrained embedded systems - emphasizing micropower efficiency, simplified reference architecture, and robust serial interfacing.
FAQ
What is the maximum clock frequency supported by the LTC1199CMS8#TRPBF?
The LTC1199CMS8#TRPBF supports a maximum clock frequency of 3.5MHz when operating from a 2.7V supply. This frequency is specified over the full –40°C to +85°C temperature range and ensures guaranteed timing margins for tCONV, tdDO, and tdis. Exceeding 3.5MHz may cause conversion errors or timing violations, especially at low temperatures or minimum supply voltage.
Does the LTC1199CMS8#TRPBF require an external reference voltage?
No, the LTC1199CMS8#TRPBF does not require an external reference voltage. Its reference is internally tied to the VCC pin, meaning the full-scale input range equals VCC. This eliminates external reference components and associated layout complexity while maintaining accuracy over the 2.7V–4V supply range.
How does the LTC1199CMS8#TRPBF handle multi-channel sampling?
The LTC1199CMS8#TRPBF integrates a software-selectable 2-channel analog multiplexer. Channel selection is controlled via a 3-bit configuration word (SGL/DIFF, ODD/SIGN, DUMMY) shifted into the DIN pin before each conversion. This allows flexible measurement modes: CH0–GND, CH1–GND, CH0–CH1, or CH1–CH0 - all without external switching components.
What is the guaranteed operating temperature range for the LTC1199CMS8#TRPBF?
The LTC1199CMS8#TRPBF is rated for operation from –40°C to +85°C. All key specifications - including offset error (±2LSB), gain error (±4LSB), INL/DNL (±1LSB), and timing parameters - are guaranteed across this full industrial temperature range, ensuring reliable performance in demanding environments.
Can the DIN and DOUT pins of the LTC1199CMS8#TRPBF be connected together?
Yes, the DIN and DOUT pins of the LTC1199CMS8#TRPBF can be tied together to implement a 3-wire serial interface. The device drives DOUT low on the 4th falling CLK edge after the start bit, so the host MCU must configure the shared line as an input before that edge to avoid bus contention - enabling reduced pin count without sacrificing functionality.
LTC1199CMS8#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:
- 10
- Sampling Rate (Per Second):
- 450k
- 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:
- 4V ~ 6V
- Voltage - Supply, Digital:
- 4V ~ 6V
- Features:
- -
- Operating Temperature:
- 0°C ~ 70°C
- Supplier Device Package:
- 8-MSOP
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
LTC1199CMS8#TRPBF FAQ
1.How can I place an order for LTC1199CMS8#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC1199CMS8#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 LTC1199CMS8#TRPBF reliable?
The price and inventory of LTC1199CMS8#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC1199CMS8#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC1199CMS8#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC1199CMS8#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC1199CMS8#TRPBF?
LTC1199CMS8#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC1199CMS8#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 LTC1199CMS8#TRPBF?
For technical support, including LTC1199CMS8#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC1199CMS8#TRPBF requirements.
6.How does Aetrix verify that LTC1199CMS8#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC1199CMS8#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 LTC1199CMS8#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC1199CMS8#TRPBF?
All LTC1199CMS8#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC1199CMS8#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 LTC1199CMS8#TRPBF part is unused and in its original packaging.
Return procedure for LTC1199CMS8#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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