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Analog Devices Inc. LTC2370IMS-16#PBF
- Part No.:
- LTC2370IMS-16#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 16-TFSOP (0.118", 3.00mm Width)
- Datasheet:
-
LTC2370IMS-16#PBF.pdf
- Description:
- IC ADC 16BIT SAR 16MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,290
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Product details
Overview
LTC2370IMS-16#PBF from Analog Devices (formerly Linear Technology) is a 16-bit, 2 Msps pseudo-differential unipolar successive approximation register (SAR) ADC operating from a single 2.5 V supply. It delivers ±0.85 LSB INL (max), guaranteed no missing codes, 94 dB SNR (typ), –112 dB THD (typ), and operates across –40°C to +85°C. It targets high-speed data acquisition in portable instrumentation and industrial process control where low power and high dynamic range are critical.
For engineers reviewing the LTC2370IMS-16#PBF datasheet, LTC2370IMS-16#PBF pinout, LTC2370IMS-16#PBF application, or LTC2370IMS-16#PBF equivalent, key selection considerations include its 2 Msps throughput with zero cycle latency, internal conversion clock, SPI-compatible daisy-chain interface, and MSOP-16 package compatibility with thermal requirements up to 85°C ambient.
Technical Context
The LTC2370IMS-16#PBF implements a charge-redistribution SAR architecture with a 16-bit CDAC and differential comparator, sampling the pseudo-differential input (IN+, IN–) during acquisition and performing binary-search conversion against VREF fractions. Its internal oscillator eliminates external clock dependency, and auto power-down between conversions scales dissipation with sample rate - 19 mW at 2 Msps, 19 µW at 2 ksps.
It supports flexible I/O voltage (1.8 V to 5 V via OVDD) independent of core VDD (2.5 V), enabling seamless interfacing with mixed-voltage host systems. The CHAIN pin enables daisy-chain mode for multi-ADC synchronization without added timing complexity, while BUSY provides precise conversion status without polling overhead.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 16-bit - guarantees full-scale quantization into 65,536 discrete levels with no missing codes. |
| Sampling Rate | 2 Msps - enables real-time capture of signals up to 1 MHz Nyquist bandwidth with zero pipeline delay. |
| SNR | 94 dB (typ, fIN = 2 kHz, VREF = 5 V) - corresponds to ~15.6 effective bits (ENOB) for high-fidelity signal digitization. |
| INL | ±0.85 LSB (max) - ensures monotonicity and linearity critical for closed-loop control and precision measurement. |
| Power Consumption | 19 mW at 2 Msps - allows battery-powered operation in compact instrumentation without active cooling. |
| Reference Range | 2.5 V to 5.1 V - permits system-level trade-offs between resolution, noise floor, and headroom using standard reference ICs. |
| Operating Temp | –40°C to +85°C - qualified for industrial environments without derating or thermal management overhead. |
Pinout & Package
Package: 16-lead plastic MSOP (4.0 mm × 3.0 mm), exposed pad not present (DFN variant has exposed pad; MSOP does not). Thermal resistance θJA = 110°C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CHAIN (1) | Mode control input | Selects normal (RDL/SDI bus enable) or daisy-chain (RDL/SDI serial data input) operation; referenced to OVDD. |
| VDD (2) | Analog core supply | 2.5 V ±62.5 mV supply; bypassed with 10 µF ceramic capacitor to GND for low-noise conversion. |
| GND (3,6,10,16) | Ground reference | Four dedicated ground pins minimize ground bounce and ensure stable reference and analog return paths. |
| IN+ (4) | Pseudo-differential analog input | Accepts 0 V to VREF input relative to IN–; 45 pF sampling capacitance requires low-impedance drive. |
| IN– (5) | Common-mode sense node | ±100 mV range w.r.t. GND; must connect to local ground plane or remote sense point to reject common-mode noise. |
| REF (7,8) | Reference voltage input | 2.5 V–5.1 V external reference; draws pulsed current (~1.3 mA peak at 2 Msps); decoupled with 47 µF X5R capacitor. |
| CNV (9) | Conversion trigger | Rising edge initiates acquisition and conversion; no minimum pulse width required beyond 20 ns high time. |
| BUSY (11) | Status output | Active-high open-drain signal indicates conversion in progress; enables deterministic read timing without SDO polling. |
| RDL/SDI (12) | Configurable I/O | In normal mode: bus enable for SDO tri-state; in chain mode: serial data input for daisy-chained ADCs. |
| SCK (13) | Serial clock input | Accepts 100 MHz max clock (10 ns period); defines data shift timing for SDO output and SDI input. |
| SDO (14) | Serial data output | MSB-first straight-binary output; valid within 9.5 ns of SCK↑; compatible with 1.8 V–5 V logic levels via OVDD. |
| OVDD (15) | Digital I/O supply | 1.71 V–5.25 V supply sets logic thresholds for all digital pins; isolates digital noise from analog VDD domain. |
Key Features
| Feature | Design Value |
|---|---|
| No cycle latency | Enables immediate post-conversion readout - eliminates FIFO buffering and simplifies real-time control loop timing. |
| Internal conversion clock | Removes need for external timing circuitry or clock distribution networks, reducing BOM count and layout sensitivity. |
| Auto power-down between conversions | Reduces average power proportionally to sampling rate - e.g., drops to 19 µW at 2 ksps without software intervention. |
| SPI-compatible daisy-chain mode | Allows synchronous sampling of multiple LTC2370IMS-16#PBF devices using a single SCK and CNV, minimizing inter-channel skew. |
| Pseudo-differential unipolar input | Rejects common-mode noise on IN+/IN– while supporting 0 V–VREF input range - simplifies front-end design vs. true differential ADCs. |
Applications
| Medical Ultrasound Beamforming | Portable Oscilloscope Front-End |
|---|---|
Use Scenario: Digitizing RF echo signals from phased-array transducers at multi-MHz rates with minimal added noise. IC Role / Device Role / Timing Role: Primary ADC capturing time-aligned channel data; BUSY signal synchronizes FPGA DMA reads with conversion completion. Use Value: 94 dB SNR preserves weak echo amplitude resolution; 2 Msps throughput supports >1 MHz bandwidth imaging without undersampling artifacts. | Use Scenario: High-fidelity waveform capture in handheld oscilloscopes requiring sub-1% amplitude accuracy and low harmonic distortion. IC Role / Device Role / Timing Role: Core signal digitizer driving real-time FFT and display processing; internal clock eliminates jitter-sensitive external timing components. Use Value: ±0.85 LSB INL ensures accurate vertical scaling; –112 dB THD prevents spurious harmonics from masking low-level signal features. |
| Industrial PLC Analog Input Module | Battery-Powered Condition Monitoring Sensor |
Use Scenario: Multi-channel voltage/current monitoring in factory automation systems operating across wide temperature ranges. IC Role / Device Role / Timing Role: Precision ADC in isolated analog input stage; daisy-chain mode enables synchronized sampling of 8+ channels with single controller interface. Use Value: –40°C to +85°C rating ensures reliability in uncontrolled cabinet environments; 19 mW power enables dense channel packing without thermal throttling. | Use Scenario: Long-life vibration/temperature sensing nodes deployed in remote locations with infrequent data transmission. IC Role / Device Role / Timing Role: Low-power ADC activated periodically by microcontroller; auto power-down reduces quiescent current to <140 µA during sleep. Use Value: 19 µW standby power extends 10-year battery life; 16-bit resolution captures subtle degradation signatures missed by lower-resolution alternatives. |
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, 5 Msps, requires external reference and separate VDRIVE; higher power (43 mW), larger LFCSP package. | Targets ultra-high-resolution applications (e.g., metrology) where 2 extra bits justify cost, size, and power penalty. | Choose AD7960BCPZ-RL7 only when ENOB >15.5 is mandatory and board space/power budget allow. |
| ADS8860IPWR | 16-bit, 1 Msps, SPI-only (no daisy-chain), 1.8 V–3.6 V OVDD only; lower SNR (92 dB), smaller TSSOP package. | Suitable for cost-sensitive, lower-throughput portable designs where daisy-chain and extended voltage I/O are unnecessary. | Choose ADS8860IPWR for simplified interface and lower BOM cost when 1 Msps and 92 dB SNR meet system requirements. |
Compared with AD7960BCPZ-RL7, LTC2370IMS-16#PBF trades 2 bits and 2.5× speed for 56% lower power and integrated daisy-chain support; versus ADS8860IPWR, it adds 1 Msps throughput, 2 dB SNR, and 1.8 V–5 V I/O flexibility at modest cost premium.
Availability
LTC2370IMS-16#PBF is available at Aetrix Electronics and suitable for medical imaging, portable instrumentation, and industrial process control requiring stable component supply with guaranteed long-term availability and traceable lot history.
Supply support for LTC2370IMS-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 LTC2370IMS-16#PBF belongs to ADI's high-speed precision SAR ADC product line, designed specifically for applications demanding both high throughput and exceptional DC/AC accuracy in space- and power-constrained systems.
FAQ
What is the maximum recommended reference voltage for the LTC2370IMS-16#PBF?
The LTC2370IMS-16#PBF supports an external reference voltage from 2.5 V to 5.1 V. Operation above 5.1 V violates absolute maximum ratings and may cause permanent damage. At 5.1 V, LSB size is 78 µV; at 2.5 V, LSB size is 38 µV - allowing system-level optimization of resolution vs. dynamic range. Reference voltage must remain stable within ±0.1 % over temperature to maintain specified INL performance.
Does the LTC2370IMS-16#PBF require external clocking for conversion timing?
No, the LTC2370IMS-16#PBF integrates an internal oscillator that sets conversion time (tCONV = 278–322 ns), eliminating dependency on external clock sources. This simplifies PCB layout, reduces jitter sensitivity, and avoids clock distribution challenges. External SCK is used only for serial data transfer timing - not for conversion initiation or duration control.
Can the LTC2370IMS-16#PBF operate with different supply voltages for analog and digital domains?
Yes. The LTC2370IMS-16#PBF separates analog (VDD = 2.5 V ±62.5 mV) and digital I/O (OVDD = 1.71 V to 5.25 V) supplies. This allows direct interfacing with 1.8 V, 2.5 V, 3.3 V, or 5 V host processors without level shifters. VDD and OVDD may be powered from independent regulators or shared rails, provided OVDD ≥ VDD and absolute maximum ratings are observed.
How does the pseudo-differential input architecture of the LTC2370IMS-16#PBF improve noise immunity?
The LTC2370IMS-16#PBF's pseudo-differential input uses IN+ and IN– terminals to reject common-mode noise - such as power supply ripple or EMI - that appears identically on both nodes. With 77 dB CMRR at 1 MHz, it suppresses interference without requiring matched transformer or amplifier pairs. IN– is restricted to ±100 mV around GND, making it ideal for ground-referenced sensor outputs or buffered single-ended signals.
Is the LTC2370IMS-16#PBF pin-compatible with other members of the LTC2370 family?
Yes, all LTC2370-16 variants (C/I/H grades, MSOP/DFN packages) share identical pinouts and electrical behavior. The LTC2370IMS-16#PBF (industrial grade, MSOP) is mechanically and functionally interchangeable with LTC2370CMS-16#PBF (commercial) and LTC2370HMS-16#PBF (high-temp), differing only in temperature qualification and screening. No PCB redesign is needed when upgrading grade.
LTC2370IMS-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):
- 2M
- Number of Inputs:
- 1
- Input Type:
- Pseudo-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:
- -
LTC2370IMS-16#PBF FAQ
1.How can I place an order for LTC2370IMS-16#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2370IMS-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 LTC2370IMS-16#PBF reliable?
The price and inventory of LTC2370IMS-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 LTC2370IMS-16#PBF is usually 5 days.
3.What payment methods are accepted for LTC2370IMS-16#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2370IMS-16#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2370IMS-16#PBF?
LTC2370IMS-16#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2370IMS-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 LTC2370IMS-16#PBF?
For technical support, including LTC2370IMS-16#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2370IMS-16#PBF requirements.
6.How does Aetrix verify that LTC2370IMS-16#PBF is sourced from the original manufacturer or authorized distributors?
All LTC2370IMS-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 LTC2370IMS-16#PBF meets industry standards.
7.What is the process for return or replacement of LTC2370IMS-16#PBF?
All LTC2370IMS-16#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2370IMS-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 LTC2370IMS-16#PBF part is unused and in its original packaging.
Return procedure for LTC2370IMS-16#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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