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Analog Devices Inc. LTC1199LCMS8#TRPBF
- Part No.:
- LTC1199LCMS8#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
LTC1199LCMS8#TRPBF.pdf
- Description:
- IC ADC 10BIT SAR 8MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,815
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Product details
Overview
LTC1199LCMS8#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, auto shutdown, and SPI/MICROWIRE-compatible 4-wire serial interface in 8-pin MSOP package. It supports unipolar input ranges up to VCC (2.7V), delivers 58dB SNR at 50kHz input, and draws only 0.8mA typical supply current - ideal for battery-powered data acquisition.
For engineers reviewing the LTC1199LCMS8#TRPBF datasheet, LTC1199LCMS8#TRPBF pinout, LTC1199LCMS8#TRPBF application, or LTC1199LCMS8#TRPBF equivalent, key selection criteria include its 2.7V–4V supply range, software-selectable MUX configuration (single-ended CH0/CH1 or differential CH0–CH1), 2.2mW typical power dissipation at full speed, and guaranteed no missing codes over temperature.
Technical Context
The LTC1199LCMS8#TRPBF implements a switched-capacitor SAR architecture with on-chip sample-and-hold and a configurable 2-channel analog multiplexer. Its serial interface requires a start bit followed by 3-bit control word (SGL/DIFF, ODD/SIGN, dummy) before outputting 10-bit MSB-first conversion result.
Unlike the LTC1197-series, it lacks an external VREF pin - reference is internally tied to VCC - and uses DIN/DOUT pins instead of +IN/–IN. Conversion time is fixed at 2.9µs (10.5 clock cycles), and acquisition time scales with source resistance due to input capacitance (20pF on-channel).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 10-bit, guaranteed no missing codes - ensures monotonicity for closed-loop control and precision measurement. |
| Max Sampling Rate | 250ksps at VCC = 2.7V - enables real-time monitoring of signals up to ~125kHz Nyquist bandwidth. |
| Supply Voltage Range | 2.7V to 4V - compatible with Li-ion single-cell and regulated low-voltage rails without level-shifting. |
| Supply Current | 0.8mA typical at 250ksps - enables >100hr runtime on 200mAh coin cell in burst-sampling systems. |
| INL / DNL | ±1LSB / ±1LSB - supports 10-bit linearity-critical applications like sensor digitization without calibration. |
| SNR @ 50kHz | 58dB - resolves ~8.6 effective bits for medium-bandwidth industrial sensing and portable instrumentation. |
| Input Leakage | ±1µA max - allows direct connection to high-impedance sources (e.g., thermistors, pH electrodes) without buffer. |
Pinout & Package
Package: 8-lead plastic MSOP (3mm × 3mm, 0.65mm pitch), RoHS-compliant, moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS (1) | Chip Select Input | Active-low enable; high state forces auto shutdown and places DOUT in Hi-Z - critical for bus sharing. |
| CH0 (2) | Analog Input Channel 0 | Positive input for single-ended or differential mode; has sample-and-hold - connects directly to sensors. |
| CH1 (3) | Analog Input Channel 1 | Positive/negative input per MUX config; no sample-and-hold - must remain stable during conversion. |
| GND (4) | Analog Ground | Reference for all analog circuitry; must tie directly to low-impedance analog ground plane. |
| VCC (5) | Positive Supply & Internal Reference | Supplies core logic and sets full-scale range (0V to VCC); bypass with 1µF ceramic + 0.1µF near pin. |
| DOUT (6) | Serial Data Output | MSB-first 10-bit result; tri-states when CS high - enables 3-wire interface if DIN/DOUT tied together. |
| CLK (7) | Serial Clock Input | Synchronizes all data transfers; max 3.5MHz at 2.7V - timing margins require careful PCB layout. |
| DIN (8) | Serial Data Input | Receives 4-bit control word (start + SGL/DIFF + ODD/SIGN + dummy); tolerant of 0.45V/1.9V logic thresholds. |
Key Features
| Feature | Design Value |
|---|---|
| Software-Selectable 2-Channel MUX | Configurable via 3-bit serial command to measure CH0 vs GND, CH1 vs GND, or CH0 vs CH1 - eliminates external analog switches. |
| Auto Shutdown Between Conversions | Reduces ICC linearly with sampling frequency - draws only 3µA typical when idle, enabling ultra-low-duty-cycle operation. |
| Single 2.7V Supply Operation | Eliminates need for dual supplies or voltage translators - simplifies power design for portable and space-constrained systems. |
| SPI/MICROWIRE-Compatible Interface | Requires no glue logic; supports 3-wire mode (DIN/DOUT shared) - reduces MCU GPIO count and PCB routing complexity. |
| Guaranteed No Missing Codes | Valid across full temperature range (–45°C to 85°C) - ensures reliable operation in automotive and industrial environments. |
Applications
| Portable ECG Monitor | Smart Sensor Node |
|---|---|
Use Scenario: Digitizing bipolar lead signals (I, II, III) from dry-electrode front-end with 250ksps sampling for arrhythmia detection. IC Role / Device Role / Timing Role: Dual-channel MUX selects leads; internal VCC reference eliminates external ref IC; auto shutdown extends battery life between heartbeat-triggered bursts. Use Value: 0.8mA active current and 3µA shutdown enable >1 week operation on CR2032; 10-bit resolution captures R-wave amplitude changes ≥100µV. |
Use Scenario: Simultaneous acquisition of temperature (NTC), humidity (capacitive), and supply voltage in LoRaWAN edge node. IC Role / Device Role / Timing Role: CH0 reads NTC voltage divider; CH1 measures capacitive sensor AC signal; single 2.7V rail powers entire analog chain. Use Value: Eliminates need for external MUX and voltage reference; 20pF input capacitance avoids loading high-Z humidity sensor; 58dB SNR ensures <±0.5°C temp accuracy. |
| Industrial PLC Analog Input Module | Battery-Powered Oscilloscope Probe |
Use Scenario: 4–20mA loop-powered field transmitter interface with cold-junction compensation and diagnostics. IC Role / Device Role / Timing Role: CH0 monitors loop current via shunt; CH1 reads thermistor for CJC; SPI interface connects to isolated ARM Cortex-M0+. Use Value: ±1µA input leakage prevents error in µA-level loop current measurement; 2.7V–4V range matches loop-powered supply constraints. |
Use Scenario: 100ksps waveform capture in handheld probe with 128-sample buffer and Bluetooth LE upload. IC Role / Device Role / Timing Role: High-speed sampling with minimal power; DOUT/DIN sharing reduces MCU pin count; auto shutdown conserves energy between triggers. Use Value: 2.2mW active power allows continuous 100ksps capture for >2hr on 500mAh LiPo; 2.9µs conversion enables precise trigger timing. |
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, 2.7V–5.25V supply, SPI-only (no MICROWIRE), no auto shutdown. | Lacks MUX and power management - requires external wake-up logic and reference for precision use. | Choose only if 8-bit resolution suffices and system already uses ADS7822U footprint. |
| MAX11100ETE+ | 12-bit resolution, 500ksps, 2.7V–3.6V supply, internal reference, but 16-pin TQFN package. | Higher resolution and speed, but larger footprint and no software-configurable MUX - fixed CH0/CH1 diff mode only. | Select when ENOB > 10 bits is required and board space allows 16-pin layout. |
Compared with ADS7822U and MAX11100ETE+, the LTC1199LCMS8#TRPBF uniquely balances 10-bit precision, integrated 2-channel MUX, auto shutdown, and compact MSOP-8 footprint - making it optimal for space- and power-constrained dual-sensor systems where 8-bit is insufficient but 12-bit adds cost and size.
Availability
LTC1199LCMS8#TRPBF is available at Aetrix Electronics and suitable for portable medical devices, smart sensor nodes, industrial PLC analog inputs, and battery-powered test equipment requiring stable component supply and long-term obsolescence support.
Supply support for LTC1199LCMS8#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, formed through the acquisition of Linear Technology in 2017.
The LTC1199LCMS8#TRPBF belongs to ADI's legacy Linear Technology precision data acquisition portfolio, designed specifically for low-power, multi-channel sensor interfacing in portable and industrial instrumentation where supply headroom and board area are constrained.
FAQ
What is the maximum clock frequency supported by LTC1199LCMS8#TRPBF at 2.7V?
The LTC1199LCMS8#TRPBF supports a maximum clock frequency of 3.5MHz when operating from a 2.7V supply. This is specified in the Recommended Operating Conditions table and confirmed by the "Maximum Clock Frequency vs Supply Voltage" curve (Figure G26). Exceeding this frequency may cause conversion errors or increased INL/DNL due to insufficient settling time.
Does LTC1199LCMS8#TRPBF require an external voltage reference?
No, the LTC1199LCMS8#TRPBF does not require an external voltage reference. Its reference is internally tied to the VCC pin, meaning the full-scale input range is 0V to VCC. This eliminates the need for external reference components and simplifies layout - a key differentiator from the LTC1197-series which uses an external VREF pin.
Can LTC1199LCMS8#TRPBF operate in differential mode between CH0 and CH1?
Yes, the LTC1199LCMS8#TRPBF supports differential measurement between CH0 and CH1. This is configured via the 3-bit serial control word: setting SGL/DIFF = 0 and ODD/SIGN = 1 selects CH0–CH1 mode. In this mode, the ADC digitizes the voltage difference while rejecting common-mode noise - useful for bridge sensor interfaces.
What is the input leakage current specification for LTC1199LCMS8#TRPBF?
The LTC1199LCMS8#TRPBF specifies analog input leakage current as ±1µA maximum over the full operating temperature range (–45°C to 85°C). This low leakage enables direct connection to high-impedance sources such as thermistors, photodiodes, or pH electrodes without significant measurement error or need for buffering.
How does the auto shutdown feature reduce power in LTC1199LCMS8#TRPBF?
The LTC1199LCMS8#TRPBF automatically enters low-power shutdown between conversions when CS is held high. In this state, supply current drops to just 3µA typical - a >260× reduction from its 0.8mA active current. This linear scaling with sampling frequency makes it ideal for duty-cycled applications like periodic sensor polling or event-triggered acquisition.
LTC1199LCMS8#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):
- 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-MSOP
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
LTC1199LCMS8#TRPBF FAQ
1.How can I place an order for LTC1199LCMS8#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC1199LCMS8#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 LTC1199LCMS8#TRPBF reliable?
The price and inventory of LTC1199LCMS8#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC1199LCMS8#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC1199LCMS8#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC1199LCMS8#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC1199LCMS8#TRPBF?
LTC1199LCMS8#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC1199LCMS8#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 LTC1199LCMS8#TRPBF?
For technical support, including LTC1199LCMS8#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC1199LCMS8#TRPBF requirements.
6.How does Aetrix verify that LTC1199LCMS8#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC1199LCMS8#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 LTC1199LCMS8#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC1199LCMS8#TRPBF?
All LTC1199LCMS8#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC1199LCMS8#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 LTC1199LCMS8#TRPBF part is unused and in its original packaging.
Return procedure for LTC1199LCMS8#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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