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Analog Devices Inc. LTC2377CMS-16#PBF
- Part No.:
- LTC2377CMS-16#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 16-TFSOP (0.118", 3.00mm Width)
- Datasheet:
-
LTC2377CMS-16#PBF.pdf
- Description:
- IC ADC 16BIT SAR 16MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,236
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Product details
Overview
LTC2377CMS-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 reference). 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 in precision data acquisition systems.
For engineers reviewing the LTC2377CMS-16#PBF datasheet, LTC2377CMS-16#PBF pinout, LTC2377CMS-16#PBF application, or LTC2377CMS-16#PBF equivalent, key selection considerations include guaranteed 16-bit no-missing-codes operation, daisy-chain SPI interface compatibility (1.8V–5V I/O), internal conversion clock, zero-cycle latency, and operation up to 125°C in MSOP package.
Technical Context
The LTC2377CMS-16#PBF implements a charge-redistribution SAR architecture with a 16-bit CDAC and differential comparator, sampling differential inputs during acquisition and executing binary-search conversion without pipeline delay. Its internal oscillator eliminates external clock dependency, and auto power-down reduces current to 0.9µA between conversions.
Digital gain compression (DGC) is controlled via the REF/DGC pin: when grounded, it remaps full-scale input from ±VREF to 0.1×VREF to 0.9×VREF (e.g., 0.5V–4.5V for 5V reference), enabling rail-to-rail single-supply amplifier operation while preserving 16-bit resolution and monotonicity.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 16-bit - delivers 65,536 discrete output levels with guaranteed no missing codes across temperature. |
| Sampling Rate | 500ksps - supports real-time capture of signals up to 250kHz Nyquist bandwidth with zero cycle latency. |
| SNR | 97dB (typ, fIN=2kHz, VREF=5V) - enables >15.8 effective bits (ENOB) in high-fidelity measurement applications. |
| INL | ±0.5LSB (max) - ensures accurate end-point linearity critical for closed-loop control and calibration systems. |
| Power Consumption | 6.8mW at 500ksps - achieves 13.6nJ/conversion efficiency, suitable for thermally constrained portable instrumentation. |
| Reference Range | 2.5V to 5.1V - allows flexible system-level scaling (e.g., 5V reference yields 152µV LSB) and compatibility with standard precision references. |
| Digital Interface | SPI-compatible with daisy-chain mode - simplifies multi-channel synchronization without additional timing logic or FPGA resources. |
Pinout & Package
Package: 16-lead plastic MSOP (5mm × 4.4mm), lead-free finish, operating temperature range 0°C to 70°C (C-grade).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (CHAIN) | Chain Mode Selector | High enables daisy-chain SPI mode; low configures RDL/SDI as bus-enable input for standalone operation. |
| 2 (VDD) | Analog Core Supply | 2.5V ±62.5mV supply powering SAR core and reference buffer; requires 10µF ceramic bypass to GND. |
| 4,5 (IN+, IN–) | Differential Analog Inputs | Accept ±VREF fully differential signal (e.g., ±5V); input capacitance 45pF in sample mode, 5pF in hold mode. |
| 7 (REF) | Reference Input | Accepts 2.5V–5.1V external reference; decoupled with 47µF X5R ceramic capacitor at pin. |
| 8 (REF/DGC) | Reference/Digital Gain Control | Tied to GND enables DGC (0.1–0.9×VREF input range); tied to REF disables DGC (full ±VREF range). |
| 9 (CNV) | Convert Trigger | Rising edge initiates conversion and powers up ADC; no external timing circuitry required due to internal oscillator. |
| 11 (BUSY) | Conversion Status Indicator | Active-high open-drain output signaling conversion progress; used for hardware handshaking or interrupt generation. |
| 12 (RDL/SDI) | Serial Data Control/Input | In normal mode: bus enable; in chain mode: serial data input for cascaded ADC configurations. |
| 13 (SCK) | Serial Clock Input | Accepts 100MHz max SCK (10ns period); controls data shift-out timing on rising edge for SDO. |
| 14 (SDO) | Serial Data Output | 2's complement 16-bit result shifted MSB-first; compatible with 1.8V/2.5V/3.3V/5V host logic levels via OVDD. |
| 15 (OVDD) | I/O Interface Supply | 1.71V–5.25V digital supply setting logic voltage level; bypassed with 0.1µF capacitor to GND. |
Key Features
| Feature | Design Value |
|---|---|
| Digital Gain Compression (DGC) | Eliminates need for negative supply in front-end amplifiers by compressing full-scale input to 0.1–0.9×VREF, enabling single +5.5V-powered LT6350 driver operation. |
| No Pipeline Delay / Zero Cycle Latency | Delivers first valid conversion result immediately after CNV rising edge-critical for deterministic real-time control loops and burst-mode acquisition. |
| Guaranteed 125°C Operation (H-grade variants) | Validated performance over –40°C to 125°C enables deployment in industrial motor drives and downhole oil/gas electronics without derating. |
| Internal Conversion Clock | Removes dependency on external clock source or PLL, reducing BOM count and layout complexity in space-constrained PCBs. |
| Auto Power-Down Between Conversions | Reduces quiescent current to 0.9µA (typ), scaling power linearly with sampling rate-ideal for battery-operated sensor nodes. |
Applications
| Medical Imaging Signal Chain | Industrial Process Monitoring |
|---|---|
Use Scenario: Digitizing low-noise, wide-dynamic-range analog outputs from ultrasound beamformer channels or MRI gradient amplifiers. IC Role / Device Role / Timing Role: High-precision SAR ADC capturing 500ksps differential sensor data with 97dB SNR and ±0.5LSB INL for artifact-free image reconstruction. Use Value: Enables 16-bit fidelity without averaging, reducing post-processing latency and memory bandwidth requirements in real-time imaging systems. |
Use Scenario: High-speed monitoring of pressure, temperature, and flow transducers in PLC-based factory automation systems. IC Role / Device Role / Timing Role: Primary data acquisition node interfacing with isolated analog front-ends, synchronized via CNV trigger across multiple modules. Use Value: Zero-latency conversion and daisy-chain SPI allow deterministic multi-sensor sampling with minimal controller overhead and no FIFO buffering. |
| Portable Test Equipment | Automated Test Equipment (ATE) |
Use Scenario: Battery-powered handheld oscilloscopes or multimeters requiring high-resolution waveform capture with low thermal drift. IC Role / Device Role / Timing Role: Low-power 16-bit ADC delivering 6.8mW active power and sub-µA shutdown current for extended field operation. Use Value: DGC feature permits single-supply op-amp driving, eliminating dual-rail supplies and reducing PCB area and bill-of-materials cost. |
Use Scenario: Channel expansion in modular ATE systems where multiple ADCs must be synchronized and calibrated simultaneously. IC Role / Device Role / Timing Role: SPI daisy-chain capable ADC enabling precise inter-channel skew control and shared clock distribution across 8+ channels. Use Value: Eliminates per-channel timing ICs and simplifies firmware by allowing single-SPI bus control of entire ADC array with deterministic BUSY-driven handshaking. |
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 (34mW at 5Msps). | Better resolution/speed but lacks integrated DGC and demands more complex analog front-end design. | Select when ENOB >16.5 bits and sampling >1Msps is mandatory; avoid if single-supply amplifier simplicity is prioritized. |
| ADS8860IDRCT | 16-bit, 1MSPS, 2.5–5V supply, SPI interface, no DGC, lower SNR (92.5dB), smaller 3mm × 3mm VSSOP package. | Higher speed but reduced noise performance and no digital gain compression for simplified driver design. | Prefer for compact layouts and cost-sensitive designs where 92.5dB SNR suffices and external amplifier rails are available. |
Compared with AD7960BCPZ-RL7 and ADS8860IDRCT, the LTC2377CMS-16#PBF uniquely balances 16-bit integrity, 500ksps throughput, ultra-low power, and DGC-enabled single-supply operation-making it optimal for portable, thermally constrained, or analog-front-end-simplified systems where 97dB SNR and ±0.5LSB INL are essential.
Availability
LTC2377CMS-16#PBF is available at Aetrix Electronics and suitable for medical imaging signal chains, industrial process monitoring, and portable test equipment requiring stable component supply, long-term lifecycle support, and C-grade commercial temperature performance.
Supply support for LTC2377CMS-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 LTC2377-16 belongs to ADI's precision SAR ADC product line, designed specifically for applications demanding high resolution, low power, and simplified analog front-end integration-including portable instrumentation, automated test, and real-time control systems.
FAQ
What is the maximum sampling rate supported by the LTC2377CMS-16#PBF?
The LTC2377CMS-16#PBF supports a maximum sampling rate of 500ksps with no pipeline delay or cycle latency. This is achieved using its internal oscillator, eliminating the need for external clock conditioning. At this rate, conversion time is 1.5µs and acquisition time is 1.46µs, ensuring deterministic timing for real-time applications.
Does the LTC2377CMS-16#PBF require an external reference voltage?
Yes, the LTC2377CMS-16#PBF requires an external reference voltage applied to the REF pin, which must be in the range of 2.5V to 5.1V. The device does not include an internal reference. A 47µF X5R ceramic capacitor is required directly at the REF pin for stability, and reference current draw is 0.32–0.4mA depending on sampling rate.
How does Digital Gain Compression (DGC) function in the LTC2377CMS-16#PBF?
Digital Gain Compression (DGC) in the LTC2377CMS-16#PBF is enabled by grounding the REF/DGC pin. This remaps the full-scale input range from ±VREF to 0.1×VREF to 0.9×VREF (e.g., 0.5V–4.5V for 5V reference), allowing single-supply amplifiers like the LT6350 to drive the ADC without negative rails while preserving full 16-bit resolution and monotonicity.
What package type and temperature grade does the LTC2377CMS-16#PBF use?
The LTC2377CMS-16#PBF uses a 16-lead plastic MSOP package (5mm × 4.4mm) and is rated for the commercial temperature range of 0°C to 70°C. It features a lead-free finish and is marked "237716" on the top surface. The exposed pad is not present in the MSOP variant (unlike the DFN version).
Can the LTC2377CMS-16#PBF interface with 1.8V logic systems?
Yes, the LTC2377CMS-16#PBF supports 1.8V logic interfaces via its OVDD pin, which accepts 1.71V to 5.25V. When OVDD = 1.8V, all digital inputs (CNV, SCK, CHAIN, RDL/SDI) recognize 0.2×OVDD and 0.8×OVDD thresholds, and SDO output swings rail-to-rail between 0V and OVDD-enabling direct connection to 1.8V FPGAs or microcontrollers without level shifters.
LTC2377CMS-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:
- 0°C ~ 70°C
- Supplier Device Package:
- 16-MSOP
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
LTC2377CMS-16#PBF FAQ
1.How can I place an order for LTC2377CMS-16#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2377CMS-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 LTC2377CMS-16#PBF reliable?
The price and inventory of LTC2377CMS-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 LTC2377CMS-16#PBF is usually 5 days.
3.What payment methods are accepted for LTC2377CMS-16#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2377CMS-16#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2377CMS-16#PBF?
LTC2377CMS-16#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2377CMS-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 LTC2377CMS-16#PBF?
For technical support, including LTC2377CMS-16#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2377CMS-16#PBF requirements.
6.How does Aetrix verify that LTC2377CMS-16#PBF is sourced from the original manufacturer or authorized distributors?
All LTC2377CMS-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 LTC2377CMS-16#PBF meets industry standards.
7.What is the process for return or replacement of LTC2377CMS-16#PBF?
All LTC2377CMS-16#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2377CMS-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 LTC2377CMS-16#PBF part is unused and in its original packaging.
Return procedure for LTC2377CMS-16#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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