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Analog Devices Inc. LTC2311CMSE-16#PBF
- Part No.:
- LTC2311CMSE-16#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 16-TFSOP (0.118", 3.00mm Width) Exposed Pad
- Datasheet:
-
LTC2311CMSE-16#PBF.pdf
- Description:
- IC ADC 16BIT SAR 16MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:105
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Product details
Overview
LTC2311CMSE-16#PBF from Analog Devices (formerly Linear Technology) is a 16-bit, 5 Msps successive approximation register (SAR) analog-to-digital converter with differential inputs, ±3 LSB typical INL, 81 dB SNR at 2.2 MHz, and integrated 4.096 V temperature-compensated reference - designed for high-speed data acquisition in industrial instrumentation and optical networking systems.
For engineers reviewing the LTC2311CMSE-16#PBF datasheet, LTC2311CMSE-16#PBF pinout, LTC2311CMSE-16#PBF application, or LTC2311CMSE-16#PBF equivalent, key selection criteria include guaranteed no-missing-codes operation, CMOS/LVDS serial interface configurability, 0°C to 70°C industrial temperature grade, and 16-lead MSOP package with exposed ground pad.
Technical Context
The LTC2311CMSE-16#PBF implements a single-supply SAR architecture with one-cycle latency and internal sample-and-hold. Its differential input stage supports 8 VP-P full-scale range with 85 dB common-mode rejection at 2.2 MHz and 100 MHz –3 dB input bandwidth.
It integrates a low-drift (≤20 ppm/°C) 4.096 V reference buffer and configurable I/O interface: CMOS mode (OVDD = 1.8 V or 2.5 V), LVDS mode (100 Ω termination), or low-power LVDS - all compatible with SPI timing and supporting up to 105 MHz SCK.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 16-bit with guaranteed no missing codes - ensures monotonicity and full dynamic range utilization in precision measurement. |
| Sampling Rate | 5 Msps maximum - enables real-time capture of signals up to 2.2 MHz with Nyquist compliance. |
| INL | ±3 LSB typical, ±8 LSB guaranteed - limits integral nonlinearity error to ≤0.012% of full scale for accurate DC and low-frequency measurements. |
| SNR | 81.6 dB typical at fIN = 2.2 MHz - delivers effective resolution of ~13.3 bits under dynamic conditions. |
| Power Dissipation | 50 mW at 5 V supply, 5 µW in sleep mode - supports high-throughput operation while enabling ultra-low-power standby in battery-aware systems. |
| Reference | Internal 4.096 V ±0.3% buffered output with 20 ppm/°C max drift - eliminates external reference component and reduces calibration burden. |
| Input Range | ±REFOUT differential (±4.096 V), 0 V to VDD common mode - accepts bipolar, unipolar, or pseudo-differential signals without configuration. |
Pinout & Package
Package: 16-lead (4 mm × 5 mm) plastic MSOP with exposed ground pad (Pin 17), RoHS-compliant, lead-free finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND (Pins 1, 5, 8, 11) | Analog/digital ground reference | Must be connected directly to solid ground plane; multiple pins reduce ground impedance and improve noise immunity. |
| REFIN (Pin 2) | 1.25 V buffered reference I/O | Outputs 1.25 V by default; grounding disables REFOUT buffer to allow external reference injection into REFOUT. |
| REFOUT (Pin 3) | 4.096 V temperature-compensated reference output | Provides stable internal reference; requires 10 µF ceramic decoupling; short-circuit current ≥30 mA. |
| VDD (Pin 4) | Analog power supply | Accepts 4.75–5.25 V (5 V operation) or 3.13–3.47 V (3.3 V operation); bypass with 1 µF ceramic capacitor. |
| AIN+, AIN– (Pins 6, 7) | Differential analog input terminals | Support 8 VP-P full-scale swing; input capacitance 10 pF; common-mode range 0 V to VDD; ESD clamped. |
| CNV (Pin 9) | Convert initiation input | TTL-compatible; falling edge triggers conversion and initiates readout; one-cycle latency; low-jitter requirement. |
| CMOS/LVDS (Pin 10) | I/O interface mode select | Ground = CMOS; tie to OVDD = LVDS; float = low-power LVDS - determines SDO/SCK signaling standard. |
| OVDD (Pin 12) | Digital I/O power supply | 1.71–2.63 V range; powers SDO/SCK logic; must match host interface voltage (e.g., FPGA I/O bank). |
| SDO+ (Pin 14) | Serial data output (CMOS mode) | MSB-first, falling-edge clocked; outputs 16-bit two's complement code; logic level referenced to OVDD. |
| SCK+ (Pin 16) | Serial clock input (CMOS mode) | Falling edge clocks data; supports up to 105 MHz; requires 1.8 V or 2.5 V logic levels per OVDD setting. |
| Exposed Pad (Pin 17) | Thermal and electrical ground | Must be soldered to PCB ground plane for thermal dissipation (θJA = 40 °C/W) and noise reduction. |
Key Features
| Feature | Design Value |
|---|---|
| Dual-mode serial interface | Configurable CMOS or LVDS I/O via Pin 10 - enables interoperability with both FPGA CMOS banks and high-noise-immunity LVDS receivers. |
| Integrated reference system | On-chip 4.096 V ±0.3% reference with 20 ppm/°C max drift and 1.25 V buffered REFIN - removes need for external reference IC and simplifies layout. |
| Wide input common-mode range | 0 V to VDD on AIN+/AIN– - accommodates direct connection of op-amp outputs, sensor bridges, or transformer-coupled signals without level-shifting. |
| Low-power operational modes | Nap (3.5 mA) and sleep (0.5 µW at 5 V) - allows rapid wake-up while minimizing idle power in intermittent-sampling applications. |
| High dynamic performance | 81.6 dB SNR and –90 dB THD at 2.2 MHz - meets requirements for ultrasound imaging, software-defined radio, and high-fidelity test equipment. |
Applications
| High-Speed Data Acquisition | Optical Networking |
|---|---|
Use Scenario: Real-time digitization of transient waveforms from oscilloscopes, LCR meters, and automated test equipment requiring >5 Msps throughput. IC Role / Device Role / Timing Role: Primary ADC capturing 16-bit samples with one-cycle latency and deterministic timing alignment via CNV-triggered conversion. Use Value: 5 Msps rate and 81.6 dB SNR enable sub-ns timing resolution and <0.012% linearity error - critical for waveform fidelity and harmonic analysis. | Use Scenario: Monitoring analog control voltages and photodiode currents in DWDM transceivers and optical line cards operating at 10–100 Gbps. IC Role / Device Role / Timing Role: Precision monitoring ADC interfacing with laser bias controllers and TEC drivers using CMOS or LVDS for noise resilience in dense PCB layouts. Use Value: 85 dB CMRR and 100 MHz input bandwidth reject switching noise from adjacent DC-DC converters and high-speed SerDes lanes. |
| Industrial Instrumentation | Multiphase Motor Control |
Use Scenario: High-accuracy current/voltage sensing in programmable logic controller (PLC) analog input modules and power quality analyzers. IC Role / Device Role / Timing Role: Isolated front-end ADC sampling shunt-based or CT-derived signals with differential inputs rejecting ground-loop interference. Use Value: Guaranteed no-missing-codes and ±8 LSB INL over 0°C to 70°C ensure metrological traceability and compliance with IEC 61000-4-30 Class A standards. | Use Scenario: Sampling phase currents and bus voltages in servo drives and inverters for field-oriented control (FOC) algorithms running at kHz update rates. IC Role / Device Role / Timing Role: Simultaneous-sampling-capable ADC (with external synchronization) delivering synchronized 16-bit current feedback to FPGA-based motor controllers. Use Value: 5 Msps throughput supports >20 kHz current loop bandwidth; differential inputs tolerate high dv/dt noise from IGBT switching. |
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 |
|---|---|---|---|
| ADS8860IDRCT | 16-bit, 1 Msps, single-ended input only, internal 2.5 V reference, SPI-only (no LVDS), 10-pin WSON package | Limited to lower-speed, space-constrained designs where differential input and LVDS are unnecessary | Select when cost, board area, or simpler interface outweigh need for 5 Msps or differential inputs. |
| AD7960BCPZ | 18-bit, 5 Msps, differential input, external reference required, LVDS-only interface, 32-lead LFCSP package | Targets higher-resolution applications (e.g., medical imaging) where 2 extra bits justify added complexity and cost | Select when 18-bit resolution and 5 Msps are mandatory, and external reference design is acceptable. |
Compared with ADS8860IDRCT and AD7960BCPZ, the LTC2311CMSE-16#PBF uniquely balances 16-bit precision, 5 Msps speed, integrated reference, differential input flexibility, and dual-mode (CMOS/LVDS) serial interface in a compact 16-lead MSOP - making it optimal for mid-tier industrial and communications systems needing robustness and ease of integration.
Availability
LTC2311CMSE-16#PBF is available at Aetrix Electronics and suitable for high-speed data acquisition systems, optical networking monitoring circuits, and industrial instrumentation requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for LTC2311CMSE-16#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 LTC2311-16 product line was developed by Linear Technology (acquired by ADI in 2017) to deliver high-speed, low-noise SAR ADCs with integrated references and flexible digital interfaces - targeting applications demanding precision, speed, and simplified system design.
FAQ
What is the operating temperature range for the LTC2311CMSE-16#PBF?
The LTC2311CMSE-16#PBF is rated for 0°C to 70°C ambient operation (Commercial grade). This is confirmed by the "C" suffix in the part number and the order information table specifying "0°C to 70°C" for the LTC2311CMSE-16#PBF variant. It uses the same 16-lead MSOP package as the I-grade (–40°C to 85°C) and H-grade (–40°C to 125°C) versions but is tested and guaranteed only across the commercial range. The LTC2311CMSE-16#PBF maintains full specification compliance - including ±8 LSB INL and 81 dB SNR - within this range.
Does the LTC2311CMSE-16#PBF require an external reference?
No, the LTC2311CMSE-16#PBF does not require an external reference. It integrates a low-drift (≤20 ppm/°C) 4.096 V temperature-compensated reference buffer on die, accessible at REFOUT (Pin 3). An optional 1.25 V buffered reference is also available at REFIN (Pin 2). External reference use is optional: grounding REFIN disables the internal REFOUT buffer, allowing an external source (1.25 V to VDD) to drive REFOUT directly. The LTC2311CMSE-16#PBF achieves its specified 81.6 dB SNR and ±3 LSB INL using the internal reference.
How is the serial interface mode selected on the LTC2311CMSE-16#PBF?
The serial interface mode on the LTC2311CMSE-16#PBF is selected via the CMOS/LVDS pin (Pin 10). Grounding Pin 10 configures CMOS mode (single-ended SDO+/SCK+). Tying Pin 10 to OVDD selects LVDS mode (differential SDO+/SDO– and SCK+/SCK–). Leaving Pin 10 floating enables low-power LVDS mode. All modes use SPI-compatible timing with MSB-first, falling-edge clocked data transfer. The LTC2311CMSE-16#PBF supports up to 105 MHz SCK in CMOS mode and requires 100 Ω differential termination in LVDS modes.
What power-saving modes does the LTC2311CMSE-16#PBF support?
The LTC2311CMSE-16#PBF supports two low-power states: Nap mode (3.5 mA typical at 5 V) entered after conversion completion, and Sleep mode (0.5 µW typical at 5 V) for deep power-down. Both modes retain register settings and reference state. Wake-up from Sleep mode requires ~10 ms for REFOUT stabilization (tWAKE). The LTC2311CMSE-16#PBF transitions automatically between active, nap, and sleep based on CNV activity and internal timing - enabling energy-efficient operation in burst-mode or event-triggered sampling systems.
Can the LTC2311CMSE-16#PBF accept single-ended input signals?
Yes, the LTC2311CMSE-16#PBF can digitize single-ended signals using pseudo-differential configurations. Connecting the signal to AIN+ and a clean reference (e.g., ground or VREF/2) to AIN– leverages the ADC's high CMRR (85 dB at 2.2 MHz) for noise rejection. The LTC2311CMSE-16#PBF requires no configuration changes - its wide common-mode range (0 V to VDD) and differential architecture inherently support unipolar, bipolar, and fully differential inputs. Valid output codes are generated even if the input exceeds ±REFOUT/2, though clamping may be needed externally.
LTC2311CMSE-16#PBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- LTC2311-16
- Package/Case:
- 16-TFSOP (0.118", 3.00mm Width) Exposed Pad
- Packaging:
- Tube
- Product Status:
- Active
- Number of Bits:
- 16
- 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-16#PBF FAQ
1.How can I place an order for LTC2311CMSE-16#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2311CMSE-16#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-16#PBF reliable?
The price and inventory of LTC2311CMSE-16#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-16#PBF is usually 5 days.
3.What payment methods are accepted for LTC2311CMSE-16#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2311CMSE-16#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2311CMSE-16#PBF?
LTC2311CMSE-16#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2311CMSE-16#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-16#PBF?
For technical support, including LTC2311CMSE-16#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2311CMSE-16#PBF requirements.
6.How does Aetrix verify that LTC2311CMSE-16#PBF is sourced from the original manufacturer or authorized distributors?
All LTC2311CMSE-16#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-16#PBF meets industry standards.
7.What is the process for return or replacement of LTC2311CMSE-16#PBF?
All LTC2311CMSE-16#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2311CMSE-16#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-16#PBF part is unused and in its original packaging.
Return procedure for LTC2311CMSE-16#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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