My Inquiry
My Account
Analog Devices Inc. LTC1197CMS8#TRPBF
- Part No.:
- LTC1197CMS8#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
LTC1197CMS8#TRPBF.pdf
- Description:
- IC ADC 10BIT SAR 8MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,704
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LTC1197CMS8#TRPBF from Analog Devices (formerly Linear Technology) is a 10-bit, 250ksps successive approximation ADC with differential analog input, internal sample-and-hold, and 3-wire SPI/MICROWIRE-compatible serial interface. It operates from a single 2.7V supply, draws only 0.8mA typical supply current at full speed, and features auto shutdown that scales power linearly with sampling rate. It is used in portable instrumentation for high-resolution DC-coupled sensor digitization.
For engineers reviewing the LTC1197CMS8#TRPBF datasheet, LTC1197CMS8#TRPBF pinout, LTC1197CMS8#TRPBF application, or LTC1197CMS8#TRPBF equivalent, key selection criteria include its 2.7V operation, differential input architecture, 250ksps throughput, ±2 LSB offset error, and MSOP-8 package compatibility with space-constrained embedded data acquisition systems.
Technical Context
The LTC1197CMS8#TRPBF implements a switched-capacitor SAR architecture with integrated sample-and-hold. Its differential input accepts signals from 0V to VCC with adjustable reference via VREF pin, enabling ratiometric measurement or external precision reference use.
It uses a 3-wire serial interface (CS, CLK, DOUT) with MSB-first output and no DIN pin-unlike the MUX-equipped LTC1199 family. Conversion timing is fixed at 10.5 clock cycles per sample, with sampling time of 1.5 clock cycles and conversion time of 2.9µs at 2.7V/3.5MHz.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 10-bit - delivers 1024 discrete output codes with no missing codes guaranteed. |
| Max Sampling Rate | 250ksps - supports real-time capture of signals up to ~125kHz Nyquist bandwidth. |
| Supply Voltage | 2.7V to 4V - enables direct integration into 3V battery-powered systems without LDO overhead. |
| Supply Current (250ksps) | 0.8mA typical - enables micropower operation; drops linearly as sample rate decreases. |
| INL / DNL | ±1 LSB / ±1 LSB - ensures monotonicity and <0.1% integral nonlinearity for precision DC measurements. |
| Reference Input | VREF pin accepts 0.2V to VCC+0.05V - allows flexible scaling down to 200mV full-scale for 200µV resolution. |
| Interface Protocol | SPI and MICROWIRE compatible - requires only CS, CLK, DOUT; no external level-shifting needed for 2.7V MCU I/O. |
Pinout & Package
Package: 8-pin MSOP (3mm × 3mm, 0.65mm pitch), RoHS-compliant, moisture-sensitive level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - CS | Chip Select Input | Active-low enable; initiates conversion and serial transfer; high state triggers auto shutdown. |
| 2 - +IN | Differential Analog Input (+) | High-impedance input (20pF); accepts 0V to VCC; paired with –IN for true differential measurement. |
| 3 - –IN | Differential Analog Input (–) | High-impedance input (20pF); defines common-mode voltage; must remain stable during sampling. |
| 4 - GND | Analog Ground | Primary return path for analog circuitry; must connect directly to low-noise analog ground plane. |
| 5 - VREF | External Reference Input | Defines full-scale range; supports external precision references or ratiometric connection to sensor excitation. |
| 6 - DOUT | Serial Data Output | CMOS-compatible, tri-stateable output; transmits 10-bit result MSB-first after two null bits. |
| 7 - CLK | Serial Clock Input | Accepts up to 3.5MHz clock at 2.7V; all data edges synchronized to rising CLK edge. |
| 8 - VCC | Positive Supply | 2.7V to 4V single supply; requires local 1µF ceramic bypass to GND for noise immunity. |
Key Features
| Feature | Design Value |
|---|---|
| Differential analog input | Enables rejection of common-mode noise and direct connection to bridge sensors or isolated signal sources without op-amp buffering. |
| Adjustable reference input (VREF) | Permits full-scale span reduction to 200mV, achieving 200µV effective resolution while maintaining 10-bit linearity. |
| Auto shutdown with linear power scaling | Reduces supply current from 0.8mA at 250ksps to sub-µA in idle, eliminating need for external power-gating logic. |
| 3-wire SPI/MICROWIRE interface | Eliminates DIN pin and simplifies host interface-only three traces required between MCU and ADC, reducing PCB routing complexity. |
| MSOP-8 package | 3mm × 3mm footprint saves >60% board area vs SO-8; compatible with standard reflow profiles and automated assembly. |
Applications
| Portable ECG Monitor | Battery-Powered Pressure Sensor Node |
|---|---|
Use Scenario: Digitizing low-amplitude, DC-coupled biopotential signals from dry electrodes with minimal front-end gain. IC Role / Device Role / Timing Role: Primary 10-bit sampling ADC capturing lead-II ECG waveforms at 250ksps with differential input rejecting motion artifact and 50/60Hz interference. Use Value: 2.7V operation extends battery life; ±1 LSB INL ensures accurate ST-segment measurement; VREF pin enables ratiometric scaling to eliminate reference drift errors. | Use Scenario: Converting output of MEMS pressure transducer in wireless industrial IoT node powered by coin cell. IC Role / Device Role / Timing Role: High-accuracy, low-power ADC interfacing to bridge-based sensor with on-chip excitation and programmable gain amplifier. Use Value: 0.8mA active current and auto shutdown reduce average power to µA-range; differential input rejects common-mode supply ripple; MSOP-8 fits compact sensor module. |
| Handheld Multimeter Front-End | Low-Cost Data Logger for Environmental Sensors |
Use Scenario: Measuring DC voltage, current, and resistance with autoranging and sub-mV resolution in palm-sized test equipment. IC Role / Device Role / Timing Role: Precision 10-bit ADC providing primary digitization path for analog front-end multiplexer outputs. Use Value: Adjustable VREF allows dynamic full-scale selection across ranges; ±2 LSB offset error eliminates need for per-range calibration; 250ksps supports fast continuity beeping response. | Use Scenario: Logging temperature, humidity, and ambient light over days using CR2032 battery and microcontroller with sleep/wake cycle. IC Role / Device Role / Timing Role: Low-quiescent ADC activated only during sensor readout bursts, synchronized to MCU wake-up timer. Use Value: Auto shutdown cuts idle current to leakage levels (<1µA); 2.7V compatibility avoids boost converter; small MSOP-8 eases integration into stacked PCB assemblies. |
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 interface, SO-8 package | Lower resolution limits DC accuracy; lacks differential input and adjustable VREF | Select when cost sensitivity outweighs resolution needs and single-ended inputs suffice. |
| MAX11100ETE+ | 12-bit resolution, 500ksps, 2.7V–3.6V supply, SPI interface, TDFN-12 package | Higher resolution and speed but larger package and no differential input; requires external reference | Choose for higher ENOB in noise-limited systems where board area permits TDFN-12 and external ref design. |
Compared with ADS7822U and MAX11100ETE+, the LTC1197CMS8#TRPBF uniquely balances 10-bit precision, differential input capability, 2.7V operation, and MSOP-8 footprint-making it optimal for space- and power-constrained DC measurement systems requiring true differential sensing without external amplification.
Availability
LTC1197CMS8#TRPBF is available at Aetrix Electronics and suitable for portable instrumentation, battery-operated sensor nodes, and handheld test equipment requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for LTC1197CMS8#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 LTC1197CMS8#TRPBF belongs to ADI's legacy Linear Technology precision data acquisition product line, designed specifically for ultra-low-power, high-accuracy DC and low-frequency signal digitization in size- and energy-constrained embedded systems.
FAQ
What is the maximum sampling rate of the LTC1197CMS8#TRPBF?
The LTC1197CMS8#TRPBF achieves a maximum sampling rate of 250ksps when operated at 2.7V with a 3.5MHz clock. This is specified under recommended operating conditions (VCC = 2.7V, VREF = 2.5V, fCLK = 3.5MHz). At lower clock frequencies or reduced supply voltages, the achievable rate decreases proportionally due to fixed 10.5-clock-cycle conversion timing.
Does the LTC1197CMS8#TRPBF support differential input mode?
Yes, the LTC1197CMS8#TRPBF supports true differential input mode via dedicated +IN and –IN pins. It measures the voltage difference between these two inputs with respect to GND, enabling common-mode noise rejection and direct connection to bridge sensors or isolated signal sources without external instrumentation amplifiers.
Can the LTC1197CMS8#TRPBF operate from a 2.7V supply?
Yes, the LTC1197CMS8#TRPBF is explicitly rated for 2.7V to 4V single-supply operation. Its datasheet specifies performance-including 250ksps sampling, ±1 LSB INL, and 0.8mA supply current-at 2.7V with 3.5MHz clock, making it ideal for coin-cell or Li-ion battery-powered applications where low-voltage operation is critical.
What package type is used for the LTC1197CMS8#TRPBF?
The LTC1197CMS8#TRPBF is housed in an 8-pin MSOP (Mini Small Outline Package) with 3mm × 3mm body and 0.65mm lead pitch. This RoHS-compliant, surface-mount package offers superior thermal performance and board-area efficiency compared to SO-8, and is compatible with standard reflow soldering processes.
Is the LTC1197CMS8#TRPBF pin-compatible with other devices in the LTC1197/LTC1199 family?
Yes, the LTC1197CMS8#TRPBF shares identical pinout and package with the LTC1197LCS8, LTC1197IMS8, and LTC1197LIMS8 variants. However, it is not pin-compatible with LTC1199-series parts (e.g., LTC1199CMS8), which substitute DIN for VREF and implement a 2-channel MUX-requiring different PCB layout and firmware handling.
LTC1197CMS8#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):
- 500k
- Number of Inputs:
- 1
- 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 ~ 9V
- Voltage - Supply, Digital:
- 4V ~ 9V
- Features:
- -
- Operating Temperature:
- 0°C ~ 70°C
- Supplier Device Package:
- 8-MSOP
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
LTC1197CMS8#TRPBF FAQ
1.How can I place an order for LTC1197CMS8#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC1197CMS8#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 LTC1197CMS8#TRPBF reliable?
The price and inventory of LTC1197CMS8#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC1197CMS8#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC1197CMS8#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC1197CMS8#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC1197CMS8#TRPBF?
LTC1197CMS8#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC1197CMS8#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 LTC1197CMS8#TRPBF?
For technical support, including LTC1197CMS8#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC1197CMS8#TRPBF requirements.
6.How does Aetrix verify that LTC1197CMS8#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC1197CMS8#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 LTC1197CMS8#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC1197CMS8#TRPBF?
All LTC1197CMS8#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC1197CMS8#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 LTC1197CMS8#TRPBF part is unused and in its original packaging.
Return procedure for LTC1197CMS8#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LTC1197CMS8#TRPBF 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…
