My Inquiry
My Account
Analog Devices Inc. LTC2377IMS-20#PBF
- Part No.:
- LTC2377IMS-20#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 16-TFSOP (0.118", 3.00mm Width)
- Datasheet:
-
LTC2377IMS-20#PBF.pdf
- Description:
- IC ADC 20BIT SAR 16MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,649
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LTC2377IMS-20#PBF from Analog Devices (formerly Linear Technology) is a 20-bit, 500ksps successive approximation register (SAR) analog-to-digital converter with ±0.5ppm typical INL, 104dB SNR at 2kHz, and digital gain compression (DGC) for single-supply amplifier interfacing. It operates from a 2.5V VDD supply, supports ±VREF fully differential input range (VREF = 2.5V to 5.1V), and consumes only 10.5mW at full throughput - ideal for high-resolution medical imaging and portable instrumentation.
For engineers reviewing the LTC2377IMS-20#PBF datasheet, LTC2377IMS-20#PBF pinout, LTC2377IMS-20#PBF application, or LTC2377IMS-20#PBF equivalent, this page delivers verified specifications, MSOP-16 package mapping, DGC-enabled input range scaling, SPI-compatible daisy-chain interface timing, and real-world design implications for low-noise, low-power 20-bit data acquisition systems.
Technical Context
The LTC2377IMS-20#PBF implements a fully differential SAR architecture with internal conversion clock, zero-cycle latency, and no pipeline delay. Its 20-bit resolution is guaranteed with no missing codes across –40°C to +85°C, supported by ±2ppm max INL and –125dB THD at 2kHz.
Digital Gain Compression (DGC) redefines full-scale mapping from ±VREF to 0.1×VREF–0.9×VREF when REF/DGC is grounded, enabling rail-to-rail input swing compatibility with single 5.5V-powered op-amps. The 16-pin MSOP package integrates dedicated GND pins (Pins 3, 6, 10, 16) and exposed-pad thermal management in DFN variants - though this MSOP variant omits the exposed pad.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 20-bit - delivers 1 ppm LSB size (9.5 µV at 5V reference), enabling sub-microvolt DC measurement precision. |
| Sampling Rate | 500 ksps - fixed maximum throughput with 2 µs minimum cycle time, suitable for real-time vibration analysis and spectral monitoring. |
| INL Error | ±0.5 ppm typical - ensures monotonicity and <0.1 ppm linearity deviation over full code range, critical for calibration-grade instrumentation. |
| SNR / THD | 104 dB SNR / –125 dB THD at 2 kHz - supports >118 dB effective number of bits (ENOB) in narrowband applications like seismic sensing. |
| Power Consumption | 10.5 mW at 500 ksps - scales linearly with sample rate (10.5 µW at 500 sps), enabling battery-operated 24-bit-equivalent dynamic range without cooling. |
| Reference Range | 2.5 V to 5.1 V - allows flexible signal chain design: 2.5V for low-noise sensor interfaces or 5.1V for maximum input headroom. |
| Digital Interface | SPI-compatible with 1.8V–5V OVDD logic - supports daisy-chain mode for multi-channel synchronized sampling without FPGA resources. |
Pinout & Package
Package: 16-lead plastic MSOP (small outline package), 3mm × 4.9mm body, 0.65mm pitch, rated for –40°C to +85°C operation. No exposed thermal pad (unlike DFN variant).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CHAIN (Pin 1) | Mode selector | Low = normal SPI mode (RDL/SDI enables SDO); high = daisy-chain mode (RDL/SDI becomes serial data input). |
| VDD (Pin 2) | Analog power supply | 2.5V ±62.5 mV supply; bypass with 10µF ceramic capacitor to GND for low-noise ADC core operation. |
| GND (Pins 3, 6, 10, 16) | Ground reference | Four independent ground connections minimize ground bounce and improve PSRR in high-speed sampling. |
| IN+, IN– (Pins 4, 5) | Differential analog inputs | Accept ±VREF fully differential input; 45 pF input capacitance in sample mode requires careful driver settling design. |
| REF (Pin 7) | Reference voltage input | 2.5V–5.1V external reference; decouple with 47µF X7R ceramic (1210 size) directly at pin for stable full-scale accuracy. |
| REF/DGC (Pin 8) | Reference/DGC control | GND = enable DGC (0.1–0.9×VREF input range); REF = disable DGC (±VREF input range); sets ADC transfer function scaling. |
| CNV (Pin 9) | Convert trigger | Rising edge initiates conversion and powers up ADC; synchronous with BUSY assertion for precise timing control. |
| BUSY (Pin 11) | Conversion status indicator | High during conversion (1.5 µs typ); used for hardware handshaking or interrupt-driven data capture. |
| RDL/SDI (Pin 12) | Serial interface control/data | Function depends on CHAIN state: bus enable (low CHAIN) or serial data input (high CHAIN) - eliminates need for external multiplexing. |
| SCK (Pin 13) | Serial clock input | Supports up to 100 MHz clock (10 ns period); rising edge clocks out MSB-first 2's complement data on SDO. |
| SDO (Pin 14) | Serial data output | 20-bit 2's complement result; tri-state when RDL = low in normal mode - enables shared SPI bus with multiple devices. |
| OVDD (Pin 15) | Digital I/O supply | 1.71V–5.25V logic supply; sets VIH/VIL thresholds and drives SDO/SCK timing margins; bypass with 0.1µF ceramic. |
Key Features
| Feature | Design Value |
|---|---|
| Digital Gain Compression (DGC) | Eliminates need for negative supply in front-end amplifiers by shifting full-scale range to 0.1–0.9×VREF, preserving 20-bit resolution while simplifying power architecture. |
| No missing codes at 20 bits | Guaranteed over –40°C to +85°C temperature range, ensuring monotonic behavior in closed-loop control and metrology applications without software correction. |
| Internal conversion clock | Removes dependency on external clock source jitter; achieves 4 ps aperture jitter and 104 dB SNR without precision clock distribution circuitry. |
| Auto power-down between conversions | Reduces average power proportionally to sampling rate - draws only 10.5 µW at 500 sps, extending battery life in portable test equipment. |
| SPI-compatible daisy-chain mode | Enables synchronized sampling across multiple LTC2377IMS-20#PBF devices using single SCK and CNV lines - cuts PCB routing complexity for multi-channel DAQ systems. |
Applications
| Medical Imaging Signal Chain | Portable Precision Data Logger |
|---|---|
|
Use Scenario: Digitizing low-amplitude, high-fidelity analog outputs from ultrasound transducer arrays or MRI gradient coils. IC Role / Device Role / Timing Role: Primary 20-bit SAR ADC capturing baseband signals at 500 ksps with minimal noise floor elevation and zero latency for real-time beamforming. Use Value: 104 dB SNR and ±0.5 ppm INL preserve diagnostic contrast resolution; DGC enables single-supply LNA design, reducing BOM count and board area. |
Use Scenario: Battery-powered field instrument recording strain gauge, thermocouple, and RTD measurements over extended deployments. IC Role / Device Role / Timing Role: High-accuracy front-end ADC with auto power-down, converting slow-varying sensor outputs at adaptive rates (500 sps to 500 ksps). Use Value: 10.5 µW standby power extends 10-year battery life; 20-bit no-missing-codes guarantee ensures traceable calibration without firmware interpolation. |
| Industrial Process Control Loop | Automated Test Equipment (ATE) |
|
Use Scenario: Closed-loop feedback acquisition in servo motor controllers requiring sub-ppm linearity for torque ripple suppression. IC Role / Device Role / Timing Role: Real-time analog monitor for current/voltage sensing with deterministic 2 µs conversion cycle and BUSY-driven interrupt response. Use Value: ±2 ppm max INL prevents harmonic distortion in PID output; fully differential inputs reject common-mode noise from PWM inverters. |
Use Scenario: Multi-channel parametric testing of ICs where synchronized sampling across voltage/current/temperature sensors is mandatory. IC Role / Device Role / Timing Role: One of multiple daisy-chained LTC2377IMS-20#PBF units sharing CNV and SCK, delivering time-aligned 20-bit samples to FPGA capture buffer. Use Value: Daisy-chain mode eliminates per-device SCK routing; 500 ksps throughput meets IEEE 1149.4 boundary-scan timing requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-resolution SAR ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADS127L01IPBSR | 24-bit delta-sigma ADC, 400 ksps, 114 dB SNR, 3.3V supply only, no DGC, SPI interface only (no daisy-chain). | Better resolution and SNR but 2× slower; requires external reference and separate digital isolator for industrial noise immunity. | Select when ultimate DC precision outweighs speed; avoid if DGC or multi-device synchronization is required. |
| AD7616BSTZ | 16-bit dual 1 MSPS SAR ADC, ±1.5 LSB INL, 92 dB SNR, integrated analog front-end, parallel + SPI interface. | Higher throughput but lower resolution; includes PGA, input buffers, and simultaneous sampling - larger footprint and higher power (45 mW). | Select for mixed-signal systems needing on-chip signal conditioning; not suitable for 20-bit metrology-grade applications. |
Compared with ADS127L01IPBSR and AD7616BSTZ, the LTC2377IMS-20#PBF uniquely balances 20-bit no-missing-codes integrity, 500 ksps speed, DGC-enabled single-supply drive, and hardware daisy-chain - making it optimal for compact, low-power, synchronized high-fidelity acquisition where resolution and timing determinism are co-prioritized.
Availability
LTC2377IMS-20#PBF is available at Aetrix Electronics and suitable for medical imaging signal chains, portable precision data loggers, and industrial process control systems requiring stable component supply with guaranteed long-term availability and full temperature-range compliance.
Supply support for LTC2377IMS-20#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-20#PBF belongs to ADI's legacy Linear Technology precision SAR ADC product line, engineered specifically for applications demanding ultra-low noise, guaranteed 20-bit linearity, and low-power operation in harsh thermal environments.
FAQ
What is the operating temperature range for the LTC2377IMS-20#PBF?
The LTC2377IMS-20#PBF is rated for –40°C to +85°C operation (Industrial grade). This is confirmed by the "I" suffix in the part number and explicitly specified in the Absolute Maximum Ratings table under Operating Temperature Range. All key AC/DC performance parameters - including ±0.5 ppm INL, 104 dB SNR, and 500 ksps throughput - are guaranteed across this full range.
Does the LTC2377IMS-20#PBF require an external clock source?
No, the LTC2377IMS-20#PBF features an internal oscillator that sets conversion timing. This eliminates external clock jitter sensitivity and simplifies system design - aperture jitter remains at just 4 ps RMS. The SCK pin is used solely for serial data transfer timing, not for ADC core operation.
How does Digital Gain Compression (DGC) affect the input voltage range of the LTC2377IMS-20#PBF?
When REF/DGC is tied to GND, DGC is enabled and the LTC2377IMS-20#PBF maps zero-scale to 0.1×VREF and full-scale to 0.9×VREF - yielding a usable input range of 0.5 V to 4.5 V for a 5 V reference. This allows driving amplifiers to operate from a single 5.5 V supply without negative rails, while preserving full 20-bit resolution.
Can the LTC2377IMS-20#PBF be used in daisy-chain configuration with other ADCs?
Yes - the LTC2377IMS-20#PBF supports hardware daisy-chain mode via the CHAIN pin. When CHAIN is high, RDL/SDI functions as serial data input, allowing multiple LTC2377IMS-20#PBF devices to share one SCK and CNV line while outputting sequential 20-bit words on a single SDO line - enabling synchronized multi-channel sampling without FPGA logic overhead.
What is the power consumption of the LTC2377IMS-20#PBF at 500 ksps?
At 500 ksps, the LTC2377IMS-20#PBF consumes 10.5 mW total (4.9 mA from 2.5 V VDD and 0.1 mA from 2.5 V OVDD). Power scales linearly with sample rate: it draws only 10.5 µW at 500 sps. This ultra-low active and standby power is achieved via automatic power-down between conversions and optimized SAR architecture.
LTC2377IMS-20#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:
- 20
- 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-20#PBF FAQ
1.How can I place an order for LTC2377IMS-20#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2377IMS-20#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-20#PBF reliable?
The price and inventory of LTC2377IMS-20#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-20#PBF is usually 5 days.
3.What payment methods are accepted for LTC2377IMS-20#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2377IMS-20#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2377IMS-20#PBF?
LTC2377IMS-20#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2377IMS-20#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-20#PBF?
For technical support, including LTC2377IMS-20#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2377IMS-20#PBF requirements.
6.How does Aetrix verify that LTC2377IMS-20#PBF is sourced from the original manufacturer or authorized distributors?
All LTC2377IMS-20#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-20#PBF meets industry standards.
7.What is the process for return or replacement of LTC2377IMS-20#PBF?
All LTC2377IMS-20#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2377IMS-20#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-20#PBF part is unused and in its original packaging.
Return procedure for LTC2377IMS-20#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LTC2377IMS-20#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…
