My Inquiry
My Account
Analog Devices Inc. LTC2311CMSE-14#PBF
- Part No.:
- LTC2311CMSE-14#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 16-TFSOP (0.118", 3.00mm Width) Exposed Pad
- Datasheet:
-
LTC2311CMSE-14#PBF.pdf
- Description:
- IC ADC 14BIT SAR 16MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,404
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LTC2311CMSE-14#PBF from Analog Devices (formerly Linear Technology) is a 14-bit + sign successive approximation register (SAR) analog-to-digital converter with differential inputs, 5Msps throughput, ±0.75LSB typical INL, 80dB SNR at 2.2MHz, and integrated 4.096V temperature-compensated reference - designed for high-speed data acquisition in industrial instrumentation and optical networking systems.
For engineers reviewing the LTC2311CMSE-14#PBF datasheet, LTC2311CMSE-14#PBF pinout, LTC2311CMSE-14#PBF application, or LTC2311CMSE-14#PBF equivalent, this page delivers verified package mapping (16-lead MSOP), confirmed CMOS/LVDS serial interface behavior, validated 8VP-P differential input range, and real-world timing constraints including 171.5ns conversion time and one-cycle latency.
Technical Context
The LTC2311CMSE-14#PBF implements a 15-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 referenced to REFOUT. It supports fully differential, pseudo-differential unipolar, and pseudo-differential bipolar input modes without configuration.
Its internal reference buffer delivers 4.096V (or 2.048V) with ≤20ppm/°C drift and includes REFIN input for external 1.25V reference injection. The CMOS/LVDS I/O mode select (Pin 10) enables hardware-configurable digital interface - grounded for CMOS, tied to OVDD for LVDS, or floating for low-power LVDS - with guaranteed 105MHz SCK support in CMOS mode.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 14-bit + sign (15-bit two's complement output); digitizes full-scale ±REFOUT into 32,768 codes with 250µV LSB when REFOUT = 4.096V. |
| Sampling Rate | 5Msps maximum; fixed one-cycle latency ensures deterministic timing for real-time control loops and FFT-based signal processing. |
| Differential Input Range | ±REFOUT (up to ±4.096V), yielding 8VP-P span - enables direct interfacing with wide-dynamic-range sensors without gain staging. |
| INL Error | ±0.75LSB typical, ±2LSB guaranteed over –40°C to 125°C - ensures monotonicity and accurate DC measurement in precision instrumentation. |
| SNR / THD | 80.6dB SNR and –90dB THD at fIN = 2.2MHz - meets requirements for high-fidelity RF sampling and baseband communications receivers. |
| Power Dissipation | 50mW at 5V/5Msps (CMOS mode); drops to 0.5µW in sleep mode - suitable for battery-backed or thermally constrained embedded systems. |
| Reference | Internal 4.096V (or 2.048V) buffered reference with 20ppm/°C max drift; REFIN accepts 1.25V external reference for system-level voltage calibration. |
Pinout & Package
Package: 16-lead (4mm × 5mm) plastic MSOP with exposed thermal pad (Pin 17, GND). Requires soldering of exposed pad to PCB ground plane for thermal and electrical performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND (Pins 1, 5, 8, 11, 17) | Ground reference | All five GND pins plus exposed pad must connect directly to solid ground plane; critical for noise immunity and thermal dissipation. |
| REFIN (Pin 2) | Reference buffer I/O | Nominally outputs 1.25V; grounding disables REFOUT buffer to allow external reference injection into REFOUT pin. |
| REFOUT (Pin 3) | Reference buffer output | Provides 4.096V (or 2.048V) temperature-compensated reference; requires 10µF X5R ceramic decoupling at pin. |
| VDD (Pin 4) | Analog power supply | Accepts 3.13V–5.25V single supply; bypass with 1µF ceramic capacitor close to pin for ADC core stability. |
| AIN+, AIN– (Pins 6, 7) | Differential analog inputs | Support 0V to VDD common-mode range and ±REFOUT differential swing; 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 means next sample starts immediately after data transfer. |
| CMOS/LVDS (Pin 10) | I/O interface mode select | Ground = CMOS; tie to OVDD = LVDS; float = low-power LVDS - configures SDO/SCK signaling and current consumption. |
| OVDD (Pin 12) | Digital I/O supply | 1.71V–2.5V range; sets logic levels for SDO/SCK; bypass with 1µF ceramic capacitor; powers LVDS drivers when enabled. |
| SDO+ (Pin 14) | Serial data output | MSB-first output on SCK falling edge; active in both CMOS and LVDS modes; SDO– used only in LVDS mode (Pin 13). |
| SCK+ (Pin 16) | Serial clock input | Falling-edge triggered; supports up to 105MHz in CMOS mode; SCK– (Pin 15) used only in LVDS mode for differential clock reception. |
Key Features
| Feature | Design Value |
|---|---|
| Hardware-selectable CMOS/LVDS interface | Single-pin (Pin 10) configuration eliminates firmware dependency and enables board-level interface optimization for noise or power trade-offs. |
| Zero-configuration differential input modes | Automatically supports fully differential, pseudo-differential unipolar, and pseudo-differential bipolar signals - no register writes or mode pins required. |
| Integrated reference with external override | On-chip 4.096V reference reduces BOM count; REFIN pin allows system-level calibration via external 1.25V source without redesign. |
| One-cycle latency operation | Eliminates pipeline delay uncertainty - essential for closed-loop motor control and real-time spectral analysis where deterministic timing is mandatory. |
| Three power states (active/nap/sleep) | Reduces current from 12mA (active) to 3.5mA (nap) to 0.1µA (sleep) - enables adaptive power management in intermittent-sampling applications. |
Applications
| High-Speed Data Acquisition | Optical Networking |
|---|---|
|
Use Scenario: Digitizing photodiode current outputs from coherent optical receivers operating at 2.2MHz Nyquist bandwidth. IC Role / Device Role / Timing Role: ADC front-end capturing baseband I/Q signals with 80.6dB SNR and –90dB THD to preserve modulation fidelity. Use Value: 5Msps throughput and 100MHz –3dB input bandwidth enable direct sampling of OIF-compliant 10G/25G interfaces without downconversion. |
Use Scenario: Monitoring laser bias current and TEC voltage in DWDM transponders requiring long-term stability across –40°C to 85°C. IC Role / Device Role / Timing Role: Precision sensor interface providing 14-bit resolution and ±2LSB INL guarantee over full industrial temperature range. Use Value: Integrated 20ppm/°C reference and guaranteed operation to 125°C eliminate need for external trimming in compact pluggable modules. |
| Industrial Instrumentation | Multiphase Motor Control |
|
Use Scenario: Sampling isolated current/voltage feedback in programmable logic controller (PLC) analog input modules. IC Role / Device Role / Timing Role: Differential SAR ADC rejecting common-mode noise from 50/60Hz mains coupling and switching transients. Use Value: 85dB CMRR at 2.2MHz and 8VP-P input range allow direct connection to ±10V industrial sensors without signal conditioning. |
Use Scenario: Capturing three-phase inverter leg currents simultaneously for field-oriented control (FOC) in servo drives. IC Role / Device Role / Timing Role: High-speed ADC synchronizing sampling across multiple channels using shared CNV signal for phase alignment. Use Value: One-cycle latency and deterministic 171.5ns conversion time ensure precise current vector reconstruction at 20kHz PWM frequencies. |
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 |
|---|---|---|---|
| AD7960BCPZ-RL7 | 18-bit, 5Msps, external reference only; no integrated REFOUT; requires separate 5V analog and 2.5V digital supplies. | Better resolution for metrology; lacks on-chip reference and flexible input common-mode range - increases BOM and layout complexity. | Select when absolute accuracy >16-bit and external reference infrastructure already exists; avoid if simplifying supply design is priority. |
| ADS8860IDRCT | 16-bit, 1Msps, SPI-only CMOS interface; 2.5V supply only; no LVDS option; 1.8V–3.6V I/O compatible. | Lower power (12mW) and smaller QFN package; insufficient speed for 5Msps real-time FFT or optical IF sampling. | Select for portable test equipment needing ultra-low power and moderate speed; not suitable for 5Msps continuous streaming applications. |
Compared with AD7960BCPZ-RL7 and ADS8860IDRCT, the LTC2311CMSE-14#PBF uniquely balances 5Msps speed, integrated reference, dual-supply flexibility (3.3V/5V), and hardware-selectable LVDS/CMOS - making it optimal for space-constrained, thermally demanding, or multi-standard communication systems.
Availability
LTC2311CMSE-14#PBF is available at Aetrix Electronics and suitable for high-speed data acquisition systems, optical networking line cards, industrial PLC analog input modules, and multiphase motor control inverters requiring stable component supply across extended temperature ranges.
Supply support for LTC2311CMSE-14#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 (acquired Linear Technology in 2017) is a global leader in high-performance analog, mixed-signal, and digital signal processing technologies, serving industrial, automotive, communications, and healthcare markets.
The LTC2311-14 belongs to Linear's precision high-speed SAR ADC product line, engineered for applications demanding low latency, excellent AC performance, and robust operation in harsh environments - especially where integration, temperature stability, and interface flexibility are critical.
FAQ
What is the guaranteed operating temperature range for LTC2311CMSE-14#PBF?
The LTC2311CMSE-14#PBF is rated for 0°C to 70°C operation, as indicated by the "C" grade suffix in its part number. This distinguishes it from the "I" (–40°C to 85°C) and "H" (–40°C to 125°C) variants. All electrical specifications in the datasheet marked with "l" apply across this full range, including ±2LSB INL, 80dB SNR, and 5Msps throughput.
Does LTC2311CMSE-14#PBF require external reference components?
No - the LTC2311CMSE-14#PBF includes an onboard low-drift 4.096V (or 2.048V) temperature-compensated reference buffer. External decoupling (10µF X5R ceramic at REFOUT, 10µF at REFIN) is required, but no precision resistors, op-amps, or external references are needed unless overriding with the 1.25V REFIN path.
How does the CMOS/LVDS pin (Pin 10) affect LTC2311CMSE-14#PBF operation?
Pin 10 configures the digital interface: grounded enables CMOS mode (single-ended SDO/SCK, 1.8V–2.5V OVDD); tied to OVDD enables LVDS mode (differential SDO+/SDO– and SCK+/SCK–, 100Ω termination); floating enables low-power LVDS. This hardware-selectable feature avoids firmware dependencies and optimizes noise/power per system requirements.
Can LTC2311CMSE-14#PBF interface directly with FPGA GPIO banks running at 1.8V?
Yes - the LTC2311CMSE-14#PBF supports 1.8V to 2.5V I/O voltages via OVDD (Pin 12). When OVDD = 1.8V and Pin 10 is grounded, all digital outputs (SDO+, SCK+) swing between 0V and 1.8V, matching standard 1.8V FPGA I/O thresholds without level shifters.
What is the minimum acquisition time required before initiating conversion on LTC2311CMSE-14#PBF?
The guaranteed minimum acquisition time for LTC2311CMSE-14#PBF is 28.5ns (tACQ). This defines the shortest interval the CNV pulse must remain high before falling to start conversion. For reliable operation at 5Msps, the total cycle time (tCYC) must be ≥200ns, leaving ≥171.5ns for conversion and readout.
LTC2311CMSE-14#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:
- 14
- Sampling Rate (Per Second):
- 5M
- Number of Inputs:
- 1
- Input Type:
- 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-14#PBF FAQ
1.How can I place an order for LTC2311CMSE-14#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2311CMSE-14#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-14#PBF reliable?
The price and inventory of LTC2311CMSE-14#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-14#PBF is usually 5 days.
3.What payment methods are accepted for LTC2311CMSE-14#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2311CMSE-14#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2311CMSE-14#PBF?
LTC2311CMSE-14#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2311CMSE-14#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-14#PBF?
For technical support, including LTC2311CMSE-14#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2311CMSE-14#PBF requirements.
6.How does Aetrix verify that LTC2311CMSE-14#PBF is sourced from the original manufacturer or authorized distributors?
All LTC2311CMSE-14#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-14#PBF meets industry standards.
7.What is the process for return or replacement of LTC2311CMSE-14#PBF?
All LTC2311CMSE-14#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2311CMSE-14#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-14#PBF part is unused and in its original packaging.
Return procedure for LTC2311CMSE-14#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LTC2311CMSE-14#PBF 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…
