My Inquiry
My Account
Analog Devices Inc. LTC2327CMS-16#PBF
- Part No.:
- LTC2327CMS-16#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 16-TFSOP (0.118", 3.00mm Width)
- Datasheet:
-
LTC2327CMS-16#PBF.pdf
- Description:
- IC ADC 16BIT SAR 16MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,870
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LTC2327CMS-16#PBF from Analog Devices (formerly Linear Technology) is a 16-bit, 500ksps successive approximation register (SAR) analog-to-digital converter with pseudo-differential inputs and true bipolar ±10.24V input range. It operates from a single 5V supply, delivers 93.5dB SNR and ±1.5LSB INL (max), and integrates a low-drift 2.048V reference with onboard buffer-making it suitable for high-voltage industrial data acquisition requiring wide dynamic range and DC accuracy.
For engineers reviewing the LTC2327CMS-16#PBF datasheet, LTC2327CMS-16#PBF pinout, LTC2327CMS-16#PBF application, or LTC2327CMS-16#PBF equivalent, key selection considerations include its no-cycle-latency SPI interface, daisy-chain capability, internal conversion clock, 16-lead MSOP package, and guaranteed 16-bit no-missing-codes operation across 0°C to 70°C.
Technical Context
The LTC2327CMS-16#PBF implements a charge redistribution SAR architecture with a 16-bit CDAC and differential comparator, sampling the attenuated/level-shifted pseudo-differential input (IN+, IN–) during acquisition and performing binary-weighted voltage comparisons against VREFBUF/2n during conversion. Its internal oscillator eliminates external timing dependencies, and the acquisition-conversion-hold sequence ensures zero pipeline delay.
It supports three reference configurations: internal 2.048V bandgap + 2× buffer (±10.24V range), externally overdriven REFIN (1.25V–2.4V, yielding ±6.25V to ±12V), or externally overdriven REFBUF (2.5V–5V, yielding ±6.25V to ±12.5V). The 7MHz –3dB input linear bandwidth and 4psRMS aperture jitter enable high-fidelity signal capture up to Nyquist.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 16-bit - guarantees full 65,536-code output resolution with no missing codes across temperature. |
| Sampling Rate | 500ksps - enables real-time capture of signals up to 250kHz without undersampling. |
| Input Range | ±10.24V true bipolar - supports direct connection to industrial ±10V sensor outputs without level-shifting. |
| SNR | 93.5dB (typ) at fIN = 2kHz - provides >15.5 effective number of bits (ENOB) for precision measurement. |
| INL | ±1.5LSB (max) - ensures monotonicity and <0.023% full-scale linearity error in closed-loop control feedback paths. |
| Power Dissipation | 36mW (typ) at 500ksps - scales with sample rate via automatic nap mode, reducing thermal load in dense PCB layouts. |
| Reference | 2.048V internal bandgap (20ppm/°C max drift) with 2× buffer - eliminates need for external reference IC in cost-sensitive designs. |
| Digital Interface | SPI-compatible, 1.8V–5V I/O, daisy-chain mode - interoperates with FPGA/CPLD and microcontrollers across voltage domains. |
Pinout & Package
Package: 16-lead plastic MSOP (3mm × 4.9mm, 0.5mm pitch), RoHS-compliant, rated for 0°C to 70°C operating temperature.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDDLBYP (1) | 2.5V LDO bypass | Internal regulator output; requires 2.2µF ceramic capacitor to GND for stable 2.5V analog rail. |
| VDD (2) | 5V analog supply | Main power input (4.75–5.25V); bypass with 10µF ceramic capacitor to minimize switching noise. |
| GND (3,6,16) | Analog/digital ground | Three dedicated ground pins reduce ground bounce and improve PSRR in mixed-signal layouts. |
| IN+ (4) | Pseudo-differential analog input (+) | Accepts ±10.24V relative to IN–; input impedance ~2kΩ; drives resistor divider network into CDAC. |
| IN– (5) | Pseudo-differential analog input (–) | Common-mode sense node; ±500mV range w.r.t. GND; must be tied to remote ground or system GND plane. |
| REFBUF (7) | Reference buffer output | Nominally 4.096V (2× REFIN); decoupled with 47µF ceramic cap; can be overdriven 2.5–5V for extended input ranges. |
| REFIN (8) | Internal reference output / external reference input | 2.048V bandgap output (bypass with 100nF); accepts 1.25–2.4V external reference for improved accuracy. |
| CNV (9) | Convert trigger | Rising-edge initiated conversion; powers up ADC core and starts acquisition phase; logic referenced to OVDD. |
| CHAIN (10) | Daisy-chain mode select | High = chain mode (RDL/SDI becomes SDI); low = normal mode (RDL/SDI enables SDO bus). |
| BUSY (11) | Conversion status indicator | Active-high open-drain output signaling conversion in progress; synchronized to CNV edge. |
| RDL/SDI (12) | Bus enable / serial data input | Mode-dependent: in normal mode, controls SDO tri-state; in chain mode, receives serial data from upstream ADC. |
| SCK (13) | Serial clock input | Drives SPI interface; supports up to 100MHz (10ns period); rising-edge data capture for MSB-first transfer. |
| SDO (14) | Serial data output | 2's complement 16-bit result; active only when enabled by RDL (normal mode) or chained (chain mode). |
| OVDD (15) | I/O digital supply | 1.71–5.25V logic supply; sets VIH/VIL thresholds; bypass with 0.1µF ceramic capacitor to GND. |
Key Features
| Feature | Design Value |
|---|---|
| No cycle latency | Delivers first valid conversion result immediately after CNV rising edge-critical for deterministic real-time control loops. |
| Onboard reference buffer | Single-shot capable 2× gain buffer eliminates external op-amp and reduces BOM count in space-constrained systems. |
| True bipolar input range | ±10.24V range matches standard industrial sensor outputs (e.g., ±10V transducers), avoiding external level-shifting circuitry. |
| Automatic nap mode | Reduces current draw between conversions-power scales linearly with sample rate, enabling ultra-low average power in burst-mode operation. |
| Daisy-chain SPI interface | Enables synchronous multi-channel acquisition using single SCK/SCK and minimal GPIOs-ideal for modular DAQ systems. |
| Guaranteed operation to 125°C (H-grade variant) | While LTC2327CMS-16#PBF is C-grade (0°C–70°C), same die supports extended temp; design reuse possible across product families. |
Applications
| Industrial Process Control | High-Speed Data Acquisition |
|---|---|
Use Scenario: Monitoring pressure, temperature, and flow sensors in PLC-based control cabinets with ±10V analog inputs. IC Role / Device Role / Timing Role: Primary SAR ADC digitizing multiple sensor channels with deterministic 2µs conversion cycle time and zero latency. Use Value: Eliminates external reference and level-shifting components while maintaining ±1.5LSB linearity across ambient temperature swings. |
Use Scenario: Capturing transient waveforms from vibration sensors or motor current signatures in predictive maintenance systems. IC Role / Device Role / Timing Role: High-fidelity front-end ADC with 93.5dB SNR and 4psRMS jitter enabling accurate FFT-based spectral analysis. Use Value: Delivers >15.5 ENOB at 500ksps-sufficient for detecting sub-0.1% harmonic distortion in rotating machinery diagnostics. |
| Portable Instrumentation | Automated Test Equipment (ATE) |
Use Scenario: Battery-powered handheld multimeters or oscilloscope probes requiring precision DC/low-frequency AC measurements. IC Role / Device Role / Timing Role: Low-power 16-bit ADC with 300μW sleep mode and 36mW active power-extends battery life without sacrificing resolution. Use Value: Integrated 2.048V reference and buffer reduce component count and board area versus discrete reference + op-amp solutions. |
Use Scenario: Channel expansion in modular ATE systems where synchronization and channel density are critical. IC Role / Device Role / Timing Role: Daisy-chainable SPI ADC enabling 8+ synchronized channels on single controller interface with minimal routing. Use Value: Eliminates need for separate timing generators per channel; BUSY/CNV timing ensures deterministic inter-channel skew <1ns. |
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, ±5V unipolar input; requires external reference and separate VIO supply; no integrated reference buffer. | Higher resolution/speed but lacks true bipolar input and onboard reference-requires more support circuitry. | Select when >16-bit ENOB and >500ksps throughput are mandatory, and board space allows external reference + driver design. |
| LTC2326IMS-16#PBF | Same family, 250ksps version; identical pinout, reference architecture, and 16-bit performance; lower power (18mW). | Half the throughput; suitable for cost-optimized or lower-bandwidth industrial monitoring where 500ksps is excessive. | Drop-in replacement if sampling rate can be reduced-shares layout, firmware, and reference design with LTC2327CMS-16#PBF. |
Compared with AD7960BCPZ-RL7, the LTC2327CMS-16#PBF trades raw speed/resolution for integrated bipolar input and reference simplicity; compared with LTC2326IMS-16#PBF, it doubles throughput while maintaining identical footprint and software compatibility-enabling scalable platform design.
Availability
LTC2327CMS-16#PBF is available at Aetrix Electronics and suitable for industrial process control, high-speed data acquisition, and portable instrumentation requiring stable component supply, long-term manufacturability, and guaranteed RoHS compliance.
Supply support for LTC2327CMS-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 semiconductors, formed through the acquisition of Linear Technology in 2017.
The LTC2327 series belongs to ADI's precision SAR ADC product line, engineered for industrial, test & measurement, and medical applications demanding high DC accuracy, low noise, and robust operation across extended temperature ranges.
FAQ
What is the maximum input voltage range supported by the LTC2327CMS-16#PBF?
The LTC2327CMS-16#PBF supports a true bipolar input range of ±10.24V when using the internal 2.048V reference and 2× buffer. With external reference overdrive, it achieves ±6.25V (REFIN = 1.25V) or ±12.5V (REFBUF = 5V). Absolute input limits are –16.5V to +16.5V on IN+, –0.5V to +0.5V on IN–, per absolute maximum ratings.
Does the LTC2327CMS-16#PBF require an external clock source?
No, the LTC2327CMS-16#PBF includes an internal oscillator that sets conversion timing-no external clock is needed. The SCK signal only controls serial data transfer timing; the CNV rising edge initiates conversion independently, simplifying system timing design and eliminating clock distribution skew concerns.
Can the LTC2327CMS-16#PBF operate with a 3.3V I/O supply?
Yes, the LTC2327CMS-16#PBF supports OVDD from 1.71V to 5.25V, including 3.3V logic levels. VIH is defined as 0.8 × OVDD and VIL as 0.2 × OVDD, ensuring reliable interfacing with 3.3V microcontrollers and FPGAs without level shifters.
How does the nap mode function in the LTC2327CMS-16#PBF?
The LTC2327CMS-16#PBF automatically enters nap mode between conversions, reducing IVDD + IOVDD current from 18.6mA (active) to ~0.1mA. Power dissipation scales linearly with sample rate-e.g., at 100ksps, typical power drops to ~7mW-making it ideal for burst-mode or event-triggered acquisition.
Is the LTC2327CMS-16#PBF pin-compatible with other devices in the LTC232x family?
Yes, the LTC2327CMS-16#PBF shares identical 16-lead MSOP pinout and reference architecture with LTC2326 (250ksps) and LTC2328 (1Msps) variants. Firmware and PCB layout are reusable across the family, enabling scalable performance upgrades without hardware redesign.
LTC2327CMS-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:
- 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, Internal
- Voltage - Supply, Analog:
- 5V
- Voltage - Supply, Digital:
- 5V
- Features:
- -
- Operating Temperature:
- 0°C ~ 70°C
- Supplier Device Package:
- 16-MSOP
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
LTC2327CMS-16#PBF FAQ
1.How can I place an order for LTC2327CMS-16#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2327CMS-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 LTC2327CMS-16#PBF reliable?
The price and inventory of LTC2327CMS-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 LTC2327CMS-16#PBF is usually 5 days.
3.What payment methods are accepted for LTC2327CMS-16#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2327CMS-16#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2327CMS-16#PBF?
LTC2327CMS-16#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2327CMS-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 LTC2327CMS-16#PBF?
For technical support, including LTC2327CMS-16#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2327CMS-16#PBF requirements.
6.How does Aetrix verify that LTC2327CMS-16#PBF is sourced from the original manufacturer or authorized distributors?
All LTC2327CMS-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 LTC2327CMS-16#PBF meets industry standards.
7.What is the process for return or replacement of LTC2327CMS-16#PBF?
All LTC2327CMS-16#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2327CMS-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 LTC2327CMS-16#PBF part is unused and in its original packaging.
Return procedure for LTC2327CMS-16#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LTC2327CMS-16#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…
