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Analog Devices Inc. LTC2377IMS-16#PBF
- Part No.:
- LTC2377IMS-16#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 16-TFSOP (0.118", 3.00mm Width)
- Datasheet:
-
LTC2377IMS-16#PBF.pdf
- Description:
- IC ADC 16BIT SAR 16MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,348
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Product details
Overview
LTC2377IMS-16#PBF from Analog Devices (formerly Linear Technology) is a 16-bit, 500ksps successive approximation register (SAR) analog-to-digital converter with ±0.5LSB INL max, 97dB SNR at 2kHz, and fully differential ±VREF input range (2.5V–5.1V). It operates from a single 2.5V supply, consumes only 6.8mW at full speed, and features digital gain compression (DGC) to enable single-supply amplifier driving. It is used in high-speed data acquisition systems requiring precision, low power, and wide dynamic range.
For engineers reviewing the LTC2377IMS-16#PBF datasheet, LTC2377IMS-16#PBF pinout, LTC2377IMS-16#PBF application, or LTC2377IMS-16#PBF equivalent, key selection considerations include guaranteed 16-bit no-missing-codes operation, internal conversion clock eliminating external timing constraints, SPI-compatible serial interface with daisy-chain mode, 1.8V–5V I/O voltage support, and operation across –40°C to +85°C.
Technical Context
The LTC2377IMS-16#PBF implements a charge-redistribution SAR architecture with a 16-bit CDAC and differential comparator, achieving zero-cycle latency and no pipeline delay. Its internal oscillator fixes conversion time at 1.5µs, enabling deterministic timing without external clock management.
Digital gain compression (DGC) maps the full-scale input range from ±VREF to 0.1×VREF to 0.9×VREF when REF/DGC is grounded-enabling rail-to-rail input swing compatibility with single-supply amplifiers like the LT6350. The device supports fully differential analog inputs with 45pF sampling capacitance and 40Ω switch on-resistance, and features auto power-down between conversions to scale power with sampling rate.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 16-bit - guarantees monotonic transfer function and full 65,536-code output range without missing codes. |
| Sampling Rate | 500ksps - enables real-time capture of signals up to 250kHz Nyquist bandwidth with no throughput penalty. |
| SNR | 97dB (typ, fIN = 2kHz, VREF = 5V) - delivers effective resolution >15.8 bits for high-fidelity signal digitization. |
| INL | ±0.5LSB (max) - ensures accurate end-point linearity critical for closed-loop control and calibration-sensitive instrumentation. |
| Power Consumption | 6.8mW at 500ksps - allows battery-powered portable instrumentation with minimal thermal impact and extended runtime. |
| Input Range | Fully differential ±VREF, VREF = 2.5V to 5.1V - supports flexible signal scaling and direct interfacing with precision reference sources. |
| Digital Interface | SPI-compatible, 1.8V–5V OVDD, daisy-chain mode - simplifies multi-channel system design with shared SCK/SDO lines and minimal GPIO overhead. |
Pinout & Package
Package: 16-lead plastic MSOP (small-outline package), 3mm × 4.9mm footprint, exposed pad not present (unlike DFN variant). Rated for –40°C to +85°C operating temperature.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CHAIN (1) | Mode selector | Low = normal SPI mode (RDL/SDI = bus enable); high = daisy-chain mode (RDL/SDI = serial data input). |
| VDD (2) | Analog supply | 2.5V ±62.5mV supply for core ADC circuitry; bypass with 10µF ceramic capacitor to GND. |
| GND (3,6,10,16) | Ground reference | Four dedicated ground pins minimize ground bounce and improve noise immunity in high-speed sampling. |
| IN+, IN– (4,5) | Differential analog inputs | Accept ±VREF differential signal; input impedance modeled as 45pF || 40Ω during acquisition phase. |
| REF (7) | Reference voltage input | 2.5V–5.1V external reference; decoupled with 47µF X5R ceramic capacitor for low-noise performance. |
| REF/DGC (8) | Reference/DGC control | Tied to REF → DGC disabled (full ±VREF range); tied to GND → DGC enabled (0.1–0.9×VREF range). |
| CNV (9) | Convert trigger | Rising edge initiates conversion and powers up ADC; asynchronous, no setup/hold required relative to SCK. |
| BUSY (11) | Conversion status | Active-high open-drain output indicating conversion in progress; logic levels referenced to VDD. |
| RDL/SDI (12) | Serial data control/input | Bus enable (CHAIN = low) or SDI (CHAIN = high); determines SDO enable state or accepts upstream daisy-chain data. |
| SCK (13) | Serial clock input | Accepts 10ns min period (100MHz max) for rising-edge data capture; compatible with 1.8V/2.5V/3.3V/5V logic. |
| SDO (14) | Serial data output | 2's complement 16-bit result shifted MSB-first on SCK rising edges; tri-state when RDL = low or BUSY = high. |
| OVDD (15) | Digital I/O supply | 1.71V–5.25V supply for digital interface; sets VIH/VIL thresholds and powers SDO driver; bypass with 0.1µF. |
Key Features
| Feature | Design Value |
|---|---|
| Digital Gain Compression (DGC) | Enables single-supply amplifier operation by mapping full-scale input to 0.1–0.9×VREF, eliminating need for negative rail while preserving 16-bit resolution. |
| No Pipeline Delay / Zero Cycle Latency | Delivers first valid conversion result immediately after CNV rising edge-critical for real-time control loops and burst-mode acquisition. |
| Internal Conversion Clock | Removes dependency on external timing source; ensures consistent 1.5µs conversion time across voltage/temperature variations. |
| Auto Power-Down Between Conversions | Reduces idle current to ≤0.9µA (typ), cutting average power proportionally to sampling rate-ideal for duty-cycled systems. |
| Guaranteed Operation to 85°C | Specified over full industrial temperature range (–40°C to +85°C), with validated INL, SNR, and timing performance at extremes. |
Applications
| Medical Imaging Signal Chain | Portable High-Speed Data Logger |
|---|---|
Use Scenario: Digitizing low-noise, wide-dynamic-range analog outputs from ultrasound beamformers or MRI gradient sensors. IC Role / Device Role / Timing Role: Primary high-resolution ADC capturing 500ksps continuous waveforms with <97dB SNR and <±0.5LSB INL. Use Value: Enables detection of subtle tissue contrast or early-stage anomalies via preserved signal fidelity and minimal harmonic distortion (–123dB THD). |
Use Scenario: Battery-powered field instruments recording vibration, acoustic emission, or environmental sensor arrays. IC Role / Device Role / Timing Role: Low-power SAR ADC performing synchronized multi-channel sampling with deterministic 1.5µs conversion time. Use Value: Extends operational life via 6.8mW active power and sub-µA shutdown current, while maintaining 16-bit accuracy across temperature swings. |
| Industrial Process Control Loop | Automated Test Equipment (ATE) |
Use Scenario: Closed-loop feedback acquisition in servo drives, PLC analog I/O modules, or precision power supply monitors. IC Role / Device Role / Timing Role: Real-time ADC providing zero-latency conversion results for PID computation with no pipeline stall. Use Value: Ensures stable control response using guaranteed monotonicity, no missing codes, and ±0.5LSB INL across –40°C to +85°C. |
Use Scenario: High-throughput parametric testing of ICs, sensors, or RF components requiring fast, repeatable DC/AC measurements. IC Role / Device Role / Timing Role: Precision front-end ADC supporting daisy-chained multi-device configurations for parallel test channel scaling. Use Value: Reduces system complexity via SPI daisy-chain mode and eliminates inter-channel skew with internal clock synchronization. |
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, 2.5V supply, no DGC, requires external reference buffer; higher power (43mW at 5Msps). | Targets ultra-high-resolution applications where speed >500ksps is mandatory and DGC is unnecessary. | Select when >16-bit resolution and >500ksps throughput are required, and system can accommodate higher power and external timing. |
| ADS8860IDRCT | 16-bit, 1MSPS, 2.5–5V supply, no DGC, SPI-only interface, lower SNR (92.5dB), wider temp range (–40°C to +125°C). | Suitable for cost-sensitive industrial monitoring where 1MSPS is needed but 97dB SNR is not critical. | Choose for higher speed at moderate SNR trade-off and extended temperature capability, but verify DGC absence does not require redesign of front-end amplifiers. |
Compared with AD7960BCPZ-RL7 and ADS8860IDRCT, the LTC2377IMS-16#PBF uniquely balances 500ksps speed, 97dB SNR, ±0.5LSB INL, and integrated DGC-making it optimal for space-constrained, low-power, single-supply systems needing uncompromised 16-bit fidelity without external timing or reference buffering.
Availability
LTC2377IMS-16#PBF is available at Aetrix Electronics and suitable for medical imaging signal chains, portable high-speed data loggers, and industrial process control systems requiring stable component supply, long-term lifecycle support, and guaranteed industrial temperature performance.
Supply support for LTC2377IMS-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 LTC2377IMS-16#PBF belongs to ADI's legacy Linear Technology precision SAR ADC product line, designed specifically for high-speed, low-power, high-SNR data acquisition in space- and power-constrained instrumentation.
FAQ
What is the maximum sampling rate of the LTC2377IMS-16#PBF?
The LTC2377IMS-16#PBF achieves a guaranteed maximum sampling rate of 500ksps across its full operating temperature range (–40°C to +85°C). This rate is supported by an internal conversion clock that fixes tCONV at 1.5µs and tCYC at 2µs, ensuring deterministic timing without external clock dependencies. At this rate, the device consumes 6.8mW and maintains 97dB SNR and ±0.5LSB INL.
Does the LTC2377IMS-16#PBF support daisy-chain configuration?
Yes, the LTC2377IMS-16#PBF supports daisy-chain mode via the CHAIN pin (Pin 1). When CHAIN is driven high, the RDL/SDI pin functions as a serial data input, allowing multiple LTC2377IMS-16#PBF devices to share a single SCK and SDO line. Each device shifts its 16-bit result into the next in sequence, reducing GPIO count and PCB routing complexity in multi-channel systems.
How does Digital Gain Compression (DGC) work in the LTC2377IMS-16#PBF?
In the LTC2377IMS-16#PBF, DGC is activated by grounding the REF/DGC pin (Pin 8). This redefines the full-scale input range from ±VREF to 0.1×VREF to 0.9×VREF, effectively compressing the analog input span while preserving all 65,536 codes. For VREF = 5V, the usable input becomes 0.5V to 4.5V-enabling use of single-supply amplifiers like the LT6350 without negative rails.
What are the supply voltage requirements for the LTC2377IMS-16#PBF?
The LTC2377IMS-16#PBF requires two independent supplies: VDD = 2.375V to 2.625V (2.5V nominal) for the analog core, and OVDD = 1.71V to 5.25V for the digital I/O interface. VDD must be bypassed with a 10µF ceramic capacitor, and OVDD with a 0.1µF capacitor. REF input ranges from 2.5V to 5.1V and must be decoupled with a 47µF X5R capacitor.
Is the LTC2377IMS-16#PBF pin-compatible with other variants in the LTC2377 family?
Yes, the LTC2377IMS-16#PBF shares identical pinout and footprint with all MSOP-packaged variants (e.g., LTC2377CMS-16#PBF, LTC2377HMS-16#PBF), differing only in temperature grade and ordering suffix. All MSOP versions use the same 16-pin layout, electrical interface, and functional behavior-allowing drop-in replacement across C/I/H grades without PCB revision.
LTC2377IMS-16#PBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 16-TFSOP (0.118", 3.00mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Number of Bits:
- 16
- Sampling Rate (Per Second):
- 500k
- Number of Inputs:
- 1
- Input Type:
- Differential
- 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:
- 2.375V ~ 2.625V
- Voltage - Supply, Digital:
- 2.375V ~ 2.625V
- Features:
- -
- Operating Temperature:
- -40°C ~ 85°C
- Supplier Device Package:
- 16-MSOP
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
LTC2377IMS-16#PBF FAQ
1.How can I place an order for LTC2377IMS-16#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2377IMS-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 LTC2377IMS-16#PBF reliable?
The price and inventory of LTC2377IMS-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 LTC2377IMS-16#PBF is usually 5 days.
3.What payment methods are accepted for LTC2377IMS-16#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2377IMS-16#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2377IMS-16#PBF?
LTC2377IMS-16#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2377IMS-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 LTC2377IMS-16#PBF?
For technical support, including LTC2377IMS-16#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2377IMS-16#PBF requirements.
6.How does Aetrix verify that LTC2377IMS-16#PBF is sourced from the original manufacturer or authorized distributors?
All LTC2377IMS-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 LTC2377IMS-16#PBF meets industry standards.
7.What is the process for return or replacement of LTC2377IMS-16#PBF?
All LTC2377IMS-16#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2377IMS-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 LTC2377IMS-16#PBF part is unused and in its original packaging.
Return procedure for LTC2377IMS-16#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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