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Analog Devices Inc. LTC2311CMSE-12#PBF
- Part No.:
- LTC2311CMSE-12#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 16-TFSOP (0.118", 3.00mm Width) Exposed Pad
- Datasheet:
-
LTC2311CMSE-12#PBF.pdf
- Description:
- IC ADC 12BIT SAR 16MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,299
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Product details
Overview
LTC2311CMSE-12#PBF from Analog Devices (formerly Linear Technology) is a 12-bit + sign successive approximation register (SAR) analog-to-digital converter with differential inputs, 5Msps throughput, ±0.25LSB typical INL, 73dB SNR at 2.2MHz, and integrated 4.096V temperature-compensated reference. It operates from a single 3.3V or 5V supply and delivers 8VP-P differential input range with wide common-mode support - ideal for high-dynamic-range data acquisition in industrial sensing and optical networking.
For engineers reviewing the LTC2311CMSE-12#PBF datasheet, LTC2311CMSE-12#PBF pinout, LTC2311CMSE-12#PBF application, or LTC2311CMSE-12#PBF equivalent, key selection criteria include guaranteed no-missing-codes performance, CMOS/LVDS configurable serial interface, one-cycle latency, –40°C to 125°C operation (C-grade variant specified here is 0°C to 70°C), and internal reference stability of ≤20ppm/°C.
Technical Context
The LTC2311CMSE-12#PBF implements a 13-bit SAR architecture with two-phase operation: acquisition (sample capacitor connected to AIN+/AIN–) followed by conversion using a binary-weighted CDAC and differential comparator. Its transfer function outputs 13-bit two's complement codes spanning ±REFOUT, delivering true 12-bit resolution with sign bit.
It supports three I/O modes via the CMOS/LVDS pin: CMOS (single-ended SDO+/SCK+), LVDS (differential SDO±/SCK± with 100Ω termination), and low-power LVDS. Reference configuration includes internal 4.096V buffer (REFOUT), external 1.25V buffered reference input (REFIN), and option to disable internal buffer for external reference drive.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 12-bit + sign (13-bit two's complement output); enables bipolar signal digitization without external level-shifting. |
| Sampling Rate | 5Msps maximum; supports real-time capture of signals up to 2.2MHz Nyquist bandwidth with 73dB SNR. |
| INL | ±0.25LSB typical, ±1LSB guaranteed; ensures monotonicity and accurate amplitude fidelity across full scale. |
| Differential Input Range | ±4.096V (8VP-P) with REFOUT = 4.096V; provides wide dynamic range while maintaining high CMRR (85dB). |
| Power Dissipation | 50mW at VDD = 5V, 5Msps; reduced to 12mW in nap mode and 0.5µW in sleep mode for power-constrained systems. |
| Reference | Internal 4.096V ±0.3% (20ppm/°C max drift); eliminates need for external precision reference in most applications. |
| Operating Temperature | 0°C to 70°C (C-grade); validated for commercial and industrial control environments with stable timing and accuracy. |
Pinout & Package
Package: 16-lead plastic MSOP (4mm × 5mm), exposed pad (Pin 17) soldered to ground plane for thermal and electrical integrity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND (Pins 1, 5, 8, 11) | Ground reference | Multiple dedicated ground pins minimize ground bounce and improve noise immunity in high-speed sampling. |
| REFIN (Pin 2) | Reference buffer input/output | Provides 1.25V buffered output; grounding disables REFOUT buffer to allow external reference injection. |
| REFOUT (Pin 3) | Internal reference output | Delivers 4.096V ±0.3% reference; requires 10µF ceramic decoupling for optimal SNR performance. |
| VDD (Pin 4) | Analog power supply | Accepts 3.13V–5.25V; bypassed with 1µF ceramic capacitor to suppress supply noise coupling into ADC core. |
| AIN+, AIN– (Pins 6, 7) | Differential analog inputs | Support ±REFOUT full-scale range with 0V–VDD common-mode; modeled as 15Ω RON + 10pF CIN during acquisition. |
| CNV (Pin 9) | Convert trigger input | TTL-compatible; falling edge initiates conversion and readout; one-cycle latency enables deterministic timing. |
| CMOS/LVDS (Pin 10) | I/O interface mode select | Ground = CMOS; tie to OVDD = LVDS; float = low-power LVDS - configures SDO/SCK signaling without re-layout. |
| OVDD (Pin 12) | Digital I/O supply | 1.71V–2.5V range; sets logic levels for SDO/SCK; decoupled with 1µF ceramic capacitor near pin. |
| SDO+ (Pin 14) | Serial data output (CMOS) | MSB-first output on SCK falling edge; active only in CMOS mode; logic level referenced to OVDD. |
| SCK+ (Pin 16) | Serial clock input (CMOS) | Single-ended clock input; supports up to 105MHz SCK frequency; defines sampling edge for data capture. |
Key Features
| Feature | Design Value |
|---|---|
| Configurable CMOS/LVDS interface | Single-pin mode selection enables interoperability with FPGA/CPLD I/O standards without hardware change. |
| Onboard 4.096V reference buffer | 20ppm/°C max drift and 0.3mV/V line regulation eliminate external reference cost and board space. |
| One-cycle latency | Enables deterministic real-time control loops with minimal pipeline delay between sample and result availability. |
| Three power states (active/nap/sleep) | Reduces average system power by >99% during idle periods while retaining fast wake-up (<10ms REFOUT stabilization). |
| Guaranteed no missing codes | Ensures monotonic response across full 12-bit range - critical for closed-loop feedback and position-sensing applications. |
Applications
| High-Speed Data Acquisition | Optical Networking Monitoring |
|---|---|
|
Use Scenario: Real-time digitization of laser bias current and photodiode output in 10G/25G transceivers. IC Role / Device Role / Timing Role: Primary ADC capturing analog monitoring signals at 5Msps with 73dB SNR to detect subtle optical power drift. Use Value: Internal 4.096V reference and wide common-mode range eliminate external signal conditioning, reducing BOM count and layout complexity. |
Use Scenario: Sampling voltage rails and temperature sensors in dense optical line cards with tight thermal constraints. IC Role / Device Role / Timing Role: Low-power SAR ADC operating in nap mode between bursts, triggered by host controller for periodic health checks. Use Value: 0.5µW sleep mode current and fast wake-up enable energy-efficient telemetry without compromising measurement fidelity. |
| Industrial Motor Control | Automotive Battery Management |
|
Use Scenario: Simultaneous current and voltage sensing across multiple motor phases in servo drives. IC Role / Device Role / Timing Role: Differential-input ADC rejecting common-mode noise from PWM switching in high-voltage inverters. Use Value: 85dB CMRR at 2.2MHz and ±0.25LSB INL ensure accurate torque estimation and fault detection under EMI stress. |
Use Scenario: Cell voltage monitoring in 12S battery packs where compact size and thermal resilience are critical. IC Role / Device Role / Timing Role: Precision ADC interfacing directly to isolated amplifiers, delivering 12-bit resolution with minimal external components. Use Value: MSOP package (4mm × 5mm) and 0°C–70°C rating support integration into space-constrained BMS modules near battery cells. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-speed SAR ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD7980BRMZ | 16-bit, 1Msps, SPI-only (no LVDS), external reference required, 7.5mW @ 1Msps | Better resolution but lower speed; suited for precision DC/low-frequency measurements, not RF or fast transient capture | Select when 16-bit resolution outweighs 5× speed requirement and LVDS interface is unnecessary |
| ADS8860IDRCT | 16-bit, 1Msps, pseudo-differential only, no internal reference, 3.3V supply only, 2.5mW | Lacks true differential input and internal reference; requires external op-amp front-end and reference IC | Choose for ultra-low-power, lower-resolution applications where board area and BOM simplicity are secondary to power budget |
Compared with AD7980BRMZ and ADS8860IDRCT, the LTC2311CMSE-12#PBF uniquely combines 5Msps speed, integrated 4.096V reference, LVDS/CMOS configurability, and true differential input - making it optimal for space-constrained, high-SNR, mixed-signal systems requiring minimal external components.
Availability
LTC2311CMSE-12#PBF is available at Aetrix Electronics and suitable for high-speed data acquisition systems, optical network monitoring equipment, and industrial motor control designs requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for LTC2311CMSE-12#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. (acquired Linear Technology in 2017) is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors.
The LTC2311-12 product line was designed for high-fidelity, low-latency data acquisition in demanding industrial, communications, and test equipment - emphasizing speed, precision, and integration without sacrificing flexibility.
FAQ
What is the operating temperature range for LTC2311CMSE-12#PBF?
The LTC2311CMSE-12#PBF is rated for 0°C to 70°C (commercial grade). This is confirmed by the "C" suffix in the part number and the order information table listing "0°C to 70°C" for all variants with "CMSE" packaging. The device maintains full specification compliance-including ±1LSB INL and 73dB SNR-across this range.
Does LTC2311CMSE-12#PBF require an external reference?
No, the LTC2311CMSE-12#PBF includes an onboard 4.096V temperature-compensated reference buffer (REFOUT) with ≤20ppm/°C drift. An external reference is optional via the REFIN pin, which can be grounded to disable the internal buffer and inject a custom reference voltage between 1.25V and VDD.
How does the CMOS/LVDS pin (Pin 10) configure the serial interface of LTC2311CMSE-12#PBF?
Pin 10 selects I/O mode: grounded → CMOS (single-ended SDO+/SCK+); tied to OVDD → LVDS (differential SDO±/SCK± with 100Ω termination); left floating → low-power LVDS. This hardware-selectable interface allows seamless integration with diverse host processors without firmware or layout changes.
What power-saving modes does LTC2311CMSE-12#PBF support, and how much current do they draw?
The LTC2311CMSE-12#PBF offers nap mode (2.4–3.5mA) and sleep mode (0.1–10µA at 3.3V, 0.5–30µW at 5V). Sleep mode reduces power by >99% versus active operation (12mA), with REFOUT wake-up time of 10ms - enabling rapid resumption of high-accuracy sampling after idle periods.
Is LTC2311CMSE-12#PBF pin-compatible with other members of the LTC2311 family?
Yes, all LTC2311-12 variants - including LTC2311IMSE-12#PBF (–40°C to 85°C) and LTC2311HMSE-12#PBF (–40°C to 125°C) - share identical 16-lead MSOP pinout and footprint. Only the temperature grade and part marking differ; no PCB redesign is needed when upgrading thermal performance.
LTC2311CMSE-12#PBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 16-TFSOP (0.118", 3.00mm Width) Exposed Pad
- Packaging:
- Tube
- Product Status:
- Active
- Number of Bits:
- 12
- Sampling Rate (Per Second):
- 5M
- Number of Inputs:
- 1
- Input Type:
- Differential, Pseudo-Differential
- Data Interface:
- LVDS - Serial, SPI
- Configuration:
- S/H-ADC
- Ratio - S/H:ADC:
- 1:1
- Number of A/D Converters:
- 1
- Architecture:
- SAR
- Reference Type:
- External, Internal
- Voltage - Supply, Analog:
- 3.13V ~ 3.47V, 5V
- Voltage - Supply, Digital:
- 3.13V ~ 3.47V, 5V
- Features:
- -
- Operating Temperature:
- 0°C ~ 70°C
- Supplier Device Package:
- 16-MSOP-EP
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
LTC2311CMSE-12#PBF FAQ
1.How can I place an order for LTC2311CMSE-12#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2311CMSE-12#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 LTC2311CMSE-12#PBF reliable?
The price and inventory of LTC2311CMSE-12#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC2311CMSE-12#PBF is usually 5 days.
3.What payment methods are accepted for LTC2311CMSE-12#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2311CMSE-12#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2311CMSE-12#PBF?
LTC2311CMSE-12#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2311CMSE-12#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 LTC2311CMSE-12#PBF?
For technical support, including LTC2311CMSE-12#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2311CMSE-12#PBF requirements.
6.How does Aetrix verify that LTC2311CMSE-12#PBF is sourced from the original manufacturer or authorized distributors?
All LTC2311CMSE-12#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 LTC2311CMSE-12#PBF meets industry standards.
7.What is the process for return or replacement of LTC2311CMSE-12#PBF?
All LTC2311CMSE-12#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2311CMSE-12#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 LTC2311CMSE-12#PBF part is unused and in its original packaging.
Return procedure for LTC2311CMSE-12#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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