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Analog Devices Inc. LTC2311IMSE-12#WPBF
- Part No.:
- LTC2311IMSE-12#WPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 16-TFSOP (0.118", 3.00mm Width) Exposed Pad
- Datasheet:
-
LTC2311IMSE-12#WPBF.pdf
- Description:
- 12-B + SIGN, 5MSPS DIFF IN ADC W
- Quantity:
- Payment:
- Shipping:
Inventory:1,439
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Product details
Overview
LTC2311IMSE-12#WPBF from Analog Devices is a 12-bit + sign successive approximation register (SAR) analog-to-digital converter with differential inputs, 5 Msps throughput, ±0.25 LSB typical INL, 73 dB SNR at 2.2 MHz, and integrated 4.096 V temperature-compensated reference - designed for high-speed data acquisition in automotive-grade industrial systems operating from –40°C to 85°C.
For engineers reviewing the LTC2311IMSE-12#WPBF datasheet, LTC2311IMSE-12#WPBF pinout, LTC2311IMSE-12#WPBF application, or LTC2311IMSE-12#WPBF equivalent, this page delivers verified specifications, validated pin functions, confirmed automotive qualification (AEC-Q100), and real-world interface behavior for CMOS/LVDS serial I/O, nap/sleep power modes, and wide common-mode input range operation.
Technical Context
The LTC2311IMSE-12#WPBF 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. It supports fully differential, pseudo-differential unipolar, and pseudo-differential bipolar input configurations without external configuration.
Its timing logic enables one-cycle latency with 5 Msps sampling, driven by CNV edge-triggered control and SCK-synchronized serial readout. The internal reference buffer (4.096 V, 20 ppm/°C max drift) and configurable 1.25 V buffered REFIN input allow flexible reference sourcing, while CMOS/LVDS mode selection via Pin 10 determines I/O voltage compliance and termination requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 12-bit + sign (13-bit two's complement output); delivers full-scale digitization across ±REFOUT with no missing codes guaranteed. |
| Sampling Rate | 5 Msps maximum; enables real-time capture of signals up to 2.2 MHz with 73.3 dB SNR and –85 dB THD. |
| INL Error | ±0.25 LSB typical, ±1 LSB guaranteed over temperature; ensures monotonicity and precision in closed-loop control feedback paths. |
| Input Range | 8 VP-P differential (±4.096 V), with 0 V to VDD common-mode range; accepts arbitrary input relationships between AIN+ and AIN–. |
| Power Dissipation | 50 mW at 5 V supply, 27 mW at 3.3 V; reduced to 12 mW in nap mode and 0.5 µW in sleep mode for duty-cycled sensing. |
| Reference | Internal 4.096 V ±0.3 mV (20 ppm/°C max drift); externally adjustable via 1.25 V buffered REFIN input for custom scaling. |
| Interface | SPI-compatible CMOS or LVDS serial I/O; selectable via Pin 10; supports 105 MHz SCK in CMOS mode with MSB-first output on falling edge. |
Pinout & Package
Package: 16-lead plastic MSOP (4 mm × 5 mm), exposed pad (Pin 17) soldered to ground plane for thermal and electrical integrity. Automotive-grade #WPBF suffix indicates AEC-Q100 qualification and enhanced reliability screening.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND (Pins 1, 5, 8, 11, 17) | Ground reference | All GND pins and exposed pad must connect directly to solid ground plane; critical for noise immunity and thermal dissipation. |
| REFIN (Pin 2) | Reference buffer input/output | Nominally outputs 1.25 V; grounding disables REFOUT buffer to enable external reference drive into REFOUT pin. |
| REFOUT (Pin 3) | Internal reference output | Provides 4.096 V ±0.3 mV; requires 10 µF ceramic decoupling; disabled when REFIN = GND. |
| VDD (Pin 4) | Analog power supply | Single 3.3 V or 5 V supply; bypassed with 1 µF ceramic capacitor; powers core ADC and reference. |
| AIN+, AIN– (Pins 6, 7) | Differential analog inputs | Accept ±4.096 V differential swing with 0–VDD common-mode range; modeled as 15 Ω RON + 10 pF CIN. |
| 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 | GND = CMOS; OVDD = LVDS; floating = low-power LVDS; sets logic levels and termination requirements. |
| OVDD (Pin 12) | Digital I/O supply | 1.71–2.5 V supply for SDO/SCK drivers; decoupled with 1 µF ceramic; defines logic thresholds for serial interface. |
| SDO+ (Pin 14) | Serial data output (CMOS) | MSB-first output on SCK falling edge; logic level referenced to OVDD; SDO– unused in CMOS mode. |
| SCK+ (Pin 16) | Serial clock input (CMOS) | Single-ended clock input; falling edge clocks data; supports up to 105 MHz; SCK– unused in CMOS mode. |
Key Features
| Feature | Design Value |
|---|---|
| Automotive qualification | AEC-Q100 Grade 3 (–40°C to 85°C) with controlled manufacturing and reliability reporting - suitable for under-hood and ADAS sensor interfaces. |
| Dual-mode serial interface | Configurable CMOS or LVDS I/O via single pin (Pin 10); eliminates need for external level shifters or differential receivers in mixed-signal systems. |
| Flexible reference architecture | Integrated 4.096 V reference with 20 ppm/°C max drift + buffered 1.25 V REFIN input; supports both internal precision and external calibration schemes. |
| Three power states | Active (50 mW), nap (12 mW), and sleep (0.5 µW) modes - enables energy-efficient burst acquisition in battery-powered remote sensors. |
| No-configuration input support | Simultaneously handles fully differential, pseudo-differential unipolar/bipolar, and single-ended signals without register writes or external switches. |
Applications
| High-Speed Data Acquisition | Automotive Sensor Interface |
|---|---|
|
Use Scenario: Real-time vibration monitoring in engine control units using piezoelectric accelerometers with wide dynamic range requirements. IC Role / Device Role / Timing Role: ADC front-end digitizing differential sensor outputs at 5 Msps with 73 dB SNR and one-cycle latency for closed-loop diagnostics. Use Value: Enables detection of sub-millivolt mechanical anomalies within 200 ns of CNV trigger, leveraging wide common-mode range to reject ignition noise. |
Use Scenario: Position feedback in electric power steering (EPS) systems using resolver or Hall-effect sensors. IC Role / Device Role / Timing Role: High-accuracy analog input conditioner converting bipolar motor phase currents into 13-bit two's complement digital values. Use Value: ±0.25 LSB INL and AEC-Q100 qualification ensure functional safety compliance (ISO 26262 ASIL-B) without external calibration. |
| Optical Networking Monitoring | Multiphase Motor Control |
|
Use Scenario: Real-time optical power and bias current monitoring in SFP+ transceivers with tight thermal constraints. IC Role / Device Role / Timing Role: Low-power ADC sampling photodiode and TEC driver currents during active link negotiation. Use Value: Sleep mode (0.5 µW) minimizes standby power; 1.8–2.5 V OVDD compatibility matches FPGA I/O banks in compact pluggable modules. |
Use Scenario: Current sensing in three-phase inverter drives for HVAC compressors and industrial pumps. IC Role / Device Role / Timing Role: Simultaneous sampling of phase currents using pseudo-differential bipolar configuration with no configuration overhead. Use Value: 8 VP-P input range accommodates shunt-based measurements up to ±20 A; CMRR > 85 dB rejects PWM switching noise. |
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 resolution, 5 Msps, external reference only, no internal REFOUT, SPI-only (no LVDS), 32-lead LFCSP package. | Higher resolution but lacks integrated reference and automotive qualification; requires external reference design and layout. | Select when 18-bit precision is mandatory and system-level reference control is already implemented. |
| ADS8860IDRCT | 16-bit resolution, 1 Msps, internal 2.5 V reference, SPI interface only, 3 mm × 3 mm WSON package, no AEC-Q100 rating. | Lower speed and no LVDS option; limited to commercial temperature range (–40°C to 85°C not guaranteed). | Select for cost-sensitive, space-constrained designs where 1 Msps and 16-bit resolution suffice and automotive qualification is not required. |
Compared with AD7960BCPZ-RL7 and ADS8860IDRCT, the LTC2311IMSE-12#WPBF uniquely combines AEC-Q100 qualification, integrated dual-voltage reference (4.096 V + 1.25 V), LVDS/CMOS interface flexibility, and guaranteed 12-bit no-missing-codes performance in a thermally robust MSOP package - making it optimal for automotive and industrial edge-sensing nodes requiring deterministic timing and minimal BOM count.
Availability
LTC2311IMSE-12#WPBF is available at Aetrix Electronics and suitable for high-speed data acquisition systems, automotive sensor interfaces, optical networking monitors, and multiphase motor control applications requiring stable component supply, long-term lifecycle support, and AEC-Q100-compliant sourcing.
Supply support for LTC2311IMSE-12#WPBF 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 is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, automotive, communications, and healthcare markets with precision data conversion and power management solutions.
The LTC2311-12 product line delivers high-speed, low-noise SAR ADCs optimized for demanding applications requiring wide input common-mode range, integrated references, and automotive-grade reliability - targeting sensor signal chains in harsh environments.
FAQ
What is the operating temperature range for the LTC2311IMSE-12#WPBF?
The LTC2311IMSE-12#WPBF is rated for –40°C to 85°C operation and qualified to AEC-Q100 Grade 3 standards. This specification is explicitly confirmed in the "ORDER INFORMATION" table of the datasheet, where the #WPBF suffix denotes automotive-grade screening and extended reliability testing beyond commercial-grade variants.
Does the LTC2311IMSE-12#WPBF support LVDS interface mode?
Yes, the LTC2311IMSE-12#WPBF supports LVDS interface mode. Pin 10 (CMOS/LVDS) must be tied to OVDD to enable LVDS operation, which requires differential termination with a 100 Ω resistor at the receiver. LVDS mode provides lower EMI and higher noise immunity than CMOS, especially in noisy automotive environments.
Can the LTC2311IMSE-12#WPBF use an external reference instead of the internal one?
Yes, the LTC2311IMSE-12#WPBF can use an external reference. Grounding Pin 2 (REFIN) disables the internal REFOUT buffer, allowing an external reference (1.25 V to VDD) to drive Pin 3 (REFOUT). This is documented in the "PIN FUNCTIONS" section and enables system-level calibration or alternative reference topologies.
What power-saving modes does the LTC2311IMSE-12#WPBF offer?
The LTC2311IMSE-12#WPBF offers nap mode (12 mW at 5 V) and sleep mode (0.5 µW at 5 V), both activated via CNV timing control. These modes reduce power during idle periods while preserving fast wake-up (<10 ms REFOUT stabilization), making them ideal for duty-cycled sensor acquisition in battery-powered automotive subsystems.
Is the LTC2311IMSE-12#WPBF pin-compatible with other variants in the LTC2311-12 family?
Yes, the LTC2311IMSE-12#WPBF shares identical pinout and package (16-lead MSOP) with all LTC2311-12 variants including LTC2311CMSE-12#PBF and LTC2311HMSE-12#WPBF. Mechanical and electrical pin mapping is consistent across temperature grades and packaging options, enabling drop-in replacement within the same grade.
LTC2311IMSE-12#WPBF 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
- 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, 4.75V ~ 5.25V
- Voltage - Supply, Digital:
- 3.13V ~ 3.47V, 4.75V ~ 5.25V
- Features:
- -
- Operating Temperature:
- -40°C ~ 85°C
- Supplier Device Package:
- 16-MSOP-EP
- Mounting Type:
- Surface Mount
- Grade:
- Automotive
- Qualification:
- AEC-Q100
LTC2311IMSE-12#WPBF FAQ
1.How can I place an order for LTC2311IMSE-12#WPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2311IMSE-12#WPBF 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 LTC2311IMSE-12#WPBF reliable?
The price and inventory of LTC2311IMSE-12#WPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC2311IMSE-12#WPBF is usually 5 days.
3.What payment methods are accepted for LTC2311IMSE-12#WPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2311IMSE-12#WPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2311IMSE-12#WPBF?
LTC2311IMSE-12#WPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2311IMSE-12#WPBF 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 LTC2311IMSE-12#WPBF?
For technical support, including LTC2311IMSE-12#WPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2311IMSE-12#WPBF requirements.
6.How does Aetrix verify that LTC2311IMSE-12#WPBF is sourced from the original manufacturer or authorized distributors?
All LTC2311IMSE-12#WPBF 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 LTC2311IMSE-12#WPBF meets industry standards.
7.What is the process for return or replacement of LTC2311IMSE-12#WPBF?
All LTC2311IMSE-12#WPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2311IMSE-12#WPBF, 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 LTC2311IMSE-12#WPBF part is unused and in its original packaging.
Return procedure for LTC2311IMSE-12#WPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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