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Analog Devices Inc. LTC1199IMS8#PBF
- Part No.:
- LTC1199IMS8#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
LTC1199IMS8#PBF.pdf
- Description:
- IC ADC 10BIT SAR 8MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,712
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Product details
Overview
LTC1199IMS8#PBF 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 SPI/MICROWIRE-compatible 4-wire serial interface. It features auto shutdown, 2.2mW typical power dissipation at full speed, and MSOP-8 packaging - ideal for low-power portable instrumentation and battery-operated sensor interfaces.
For engineers reviewing the LTC1199IMS8#PBF datasheet, LTC1199IMS8#PBF pinout, LTC1199IMS8#PBF application, or LTC1199IMS8#PBF equivalent, key selection criteria include its 2.7V–4V supply range, software-selectable MUX configuration (single-ended CH0/CH1 or differential), 10-bit no-missing-codes resolution, and guaranteed performance over –45°C to +85°C industrial temperature range.
Technical Context
The LTC1199IMS8#PBF implements a switched-capacitor SAR architecture with on-chip sample-and-hold and a configurable 2-channel multiplexer. Its serial interface requires a start bit followed by a 3-bit control word (SGL/DIFF, ODD/SIGN, dummy) to select input mode before conversion begins.
Unlike the LTC1197 series, it lacks a dedicated VREF pin - reference is internally tied to VCC - and uses DIN/DOUT pins for half-duplex communication. Conversion time is fixed at 2.9µs (10.5 clock cycles), with timing parameters (e.g., tsuCS = 78ns, tdDO = 130ns) fully specified for 2.7V operation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 10-bit, no missing codes - ensures monotonicity and full-scale linearity in precision measurement systems. |
| Max Sampling Rate | 250ksps at VCC = 2.7V - supports real-time acquisition of audio-band and sensor signals without aliasing. |
| Supply Voltage | 2.7V to 4V - enables direct integration with Li-ion battery-powered or low-voltage microcontroller systems. |
| Power Dissipation | 2.2mW typical at 250ksps - reduces thermal load and extends battery life in portable designs. |
| INL / DNL | ±1 LSB / ±1 LSB - guarantees ≤0.1% full-scale error for calibrated industrial sensing applications. |
| SNR + THD | 58dB / –60dB at 50kHz - sufficient for 9.5-bit effective resolution in medium-fidelity data logging. |
| Operating Temp | –45°C to +85°C - qualified for industrial and automotive under-hood environments. |
Pinout & Package
Package: 8-pin MSOP (3mm × 3mm, 0.65mm pitch), RoHS-compliant, moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 CS | Chip Select Input | Active-low enable; initiates conversion sequence and controls auto-shutdown entry/exit. |
| 2 CH0 (+IN) | Analog Input Channel 0 | Positive input for single-ended or differential measurements; high-impedance (>1GΩ) sample-and-hold node. |
| 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 Reference | Primary return path for analog signals and internal reference; must connect directly to low-noise ground plane. |
| 5 DIN | Digital Input Data | Receives 3-bit configuration word (start bit + SGL/DIFF + ODD/SIGN + dummy) after CS fall. |
| 6 DOUT | Digital Output Data | Transmits 10-bit MSB-first conversion result after two null bits; tri-state when CS high. |
| 7 CLK | Serial Clock Input | Synchronizes all data transfers; max 3.5MHz at 2.7V; rising edge clocks DIN/DOUT. |
| 8 VCC | Positive Supply | 2.7V–4V analog/digital supply; also serves as internal reference voltage source. |
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 supply current linearly with sampling rate; draws only 0.8µA in shutdown - critical for duty-cycled sensor nodes. |
| Single-Supply 2.7V Operation | Eliminates need for dual supplies or level shifters when interfacing with 3.3V or lower microcontrollers and sensors. |
| SPI/MICROWIRE-Compatible Interface | Requires no glue logic; supports DIN/DOUT wire-OR configuration for 3-wire system integration with minimal GPIO usage. |
| Guaranteed 10-Bit Performance Over Temp | Specified INL, DNL, offset, and gain error across –45°C to +85°C - avoids recalibration in field-deployed equipment. |
Applications
| Portable ECG Monitor | Industrial Temperature Sensor Node |
|---|---|
Use Scenario: Battery-powered wearable device acquiring lead-II ECG signals at 250Hz–1kHz with baseline drift compensation. IC Role / Device Role / Timing Role: Primary ADC digitizing conditioned analog front-end output; MUX selects between differential limb leads or reference electrode paths. Use Value: 2.2mW power enables >72-hour runtime on coin cell; 2.7V operation matches LDO output of ultra-low-quiescent PMICs. | Use Scenario: Wireless RTD/thermistor node in factory automation cabinet, sampling every 100ms with local digital filtering. IC Role / Device Role / Timing Role: Precision analog-to-digital converter interfacing with op-amp-based ratiometric bridge circuitry. Use Value: No-missing-codes resolution ensures accurate 0.1°C temperature steps; –45°C to +85°C rating covers enclosure thermal extremes. |
| Handheld Multimeter | Low-Power Data Logger |
Use Scenario: 3½-digit handheld DMM measuring DC voltage, current, and resistance with autoranging. IC Role / Device Role / Timing Role: Core ADC in dual-slope or successive-approximation architecture; MUX routes different attenuated/scaled inputs. Use Value: 10-bit resolution meets EN61010 accuracy requirements; MSOP-8 footprint saves PCB area in compact enclosures. | Use Scenario: Solar-powered environmental logger capturing soil moisture, light, and humidity every 5 minutes. IC Role / Device Role / Timing Role: Low-duty-cycle ADC activated only during measurement bursts; auto-shutdown minimizes quiescent draw. Use Value: 0.8µA shutdown current extends 10-year deployment life; 2.7V compatibility allows direct connection to supercapacitor storage. |
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 |
|---|---|---|---|
| ADS7822IDR | 8-bit resolution, 200ksps, 2.7V–5.25V supply, SPI-only interface, no MUX | Lacks channel selection; suitable only for single-input systems requiring lower resolution | Select if 8-bit precision suffices and board space permits SOIC-8 instead of MSOP-8 |
| MAX11100ETE+ | 12-bit resolution, 500ksps, 2.7V–3.6V supply, internal reference, no MUX | Higher resolution but no analog multiplexer; requires external signal routing | Choose when 12-bit accuracy is mandatory and external MUX is acceptable |
Compared with ADS7822IDR and MAX11100ETE+, the LTC1199IMS8#PBF uniquely combines 10-bit precision, integrated 2-channel MUX, and sub-2.5mW active power - making it optimal for space-constrained, multi-sensor systems where resolution, integration, and micropower coexist.
Availability
LTC1199IMS8#PBF is available at Aetrix Electronics and suitable for portable instrumentation, industrial sensor nodes, handheld test equipment, and low-power data loggers requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for LTC1199IMS8#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 technologies, serving industrial, automotive, communications, and healthcare markets.
The LTC1199IMS8#PBF belongs to ADI's legacy Linear Technology precision data acquisition product line, designed specifically for low-voltage, low-power, high-speed sampling applications in portable and embedded systems.
FAQ
What is the maximum clock frequency supported by the LTC1199IMS8#PBF?
The LTC1199IMS8#PBF supports a maximum clock frequency of 3.5MHz when operating from a 2.7V supply. This value scales with supply voltage - higher VCC allows faster clocking up to 7.2MHz at 5V - but the LTC1199IMS8#PBF is rated for 2.7V–4V operation, so 3.5MHz is its validated maximum. Exceeding this may cause timing violations or degraded AC performance.
Does the LTC1199IMS8#PBF require an external reference voltage?
No, the LTC1199IMS8#PBF does not require an external reference. Its reference is internally tied to the VCC pin, meaning the full-scale input range equals VCC. For example, at VCC = 2.7V, the unipolar input span is 0V to 2.7V. This simplifies design but requires stable, low-noise VCC regulation for accurate conversions.
Can the LTC1199IMS8#PBF operate in differential mode?
Yes, the LTC1199IMS8#PBF supports differential mode via its software-configurable MUX. When configured using the 3-bit control word (SGL/DIFF = 0, ODD/SIGN = 1), it measures the voltage difference between CH0 and CH1. Note that only CH0 has a sample-and-hold; CH1 must remain stable during acquisition to avoid errors.
What is the guaranteed operating temperature range for the LTC1199IMS8#PBF?
The LTC1199IMS8#PBF is specified for operation from –45°C to +85°C. This "I-grade" industrial temperature range is confirmed in the Absolute Maximum Ratings and Recommended Operating Conditions tables, and all key DC and AC specifications (INL, DNL, SNR, THD) are guaranteed across this full range.
How does the auto shutdown feature work in the LTC1199IMS8#PBF?
The LTC1199IMS8#PBF automatically enters low-power shutdown whenever CS is held high between conversions. During shutdown, supply current drops to ≤0.8µA. Power resumes within nanoseconds upon CS falling edge. This behavior is intrinsic - no register writes or configuration needed - and scales linearly with sampling frequency reduction.
LTC1199IMS8#PBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tube
- 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:
- -40°C ~ 85°C
- Supplier Device Package:
- 8-MSOP
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
LTC1199IMS8#PBF FAQ
1.How can I place an order for LTC1199IMS8#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC1199IMS8#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 LTC1199IMS8#PBF reliable?
The price and inventory of LTC1199IMS8#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC1199IMS8#PBF is usually 5 days.
3.What payment methods are accepted for LTC1199IMS8#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC1199IMS8#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC1199IMS8#PBF?
LTC1199IMS8#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC1199IMS8#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 LTC1199IMS8#PBF?
For technical support, including LTC1199IMS8#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC1199IMS8#PBF requirements.
6.How does Aetrix verify that LTC1199IMS8#PBF is sourced from the original manufacturer or authorized distributors?
All LTC1199IMS8#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 LTC1199IMS8#PBF meets industry standards.
7.What is the process for return or replacement of LTC1199IMS8#PBF?
All LTC1199IMS8#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC1199IMS8#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 LTC1199IMS8#PBF part is unused and in its original packaging.
Return procedure for LTC1199IMS8#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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