My Inquiry
My Account
Analog Devices Inc. LTC2327IMS-16#PBF
- Part No.:
- LTC2327IMS-16#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 16-TFSOP (0.118", 3.00mm Width)
- Datasheet:
-
LTC2327IMS-16#PBF.pdf
- Description:
- IC ADC 16BIT SAR 16MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,466
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LTC2327IMS-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 internal reference with onboard buffer-making it suitable for high-voltage industrial data acquisition requiring wide dynamic range and DC accuracy.
For engineers reviewing the LTC2327IMS-16#PBF datasheet, LTC2327IMS-16#PBF pinout, LTC2327IMS-16#PBF application, or LTC2327IMS-16#PBF equivalent, key selection considerations include guaranteed 16-bit no-missing-codes operation, SPI-compatible daisy-chain interface supporting 1.8V–5V I/O, internal conversion clock eliminating external timing constraints, and thermal performance validated to 85°C ambient (I-grade).
Technical Context
The LTC2327IMS-16#PBF implements a charge-redistribution SAR architecture with a 16-bit CDAC and differential comparator. Its pseudo-differential input stage uses resistor divider networks (2kΩ total impedance per input) to level-shift ±2.5×VREFBUF signals into the ADC core's 0–VREFBUF range, enabling true bipolar operation without external signal conditioning.
Conversion is initiated by a rising edge on CNV; the internal oscillator sets tCONV = 1.5µs with zero cycle latency. The device supports two operational modes: normal mode (RDL/SDI as bus enable) and chain mode (RDL/SDI as serial data input), both using SPI-compatible timing with tSCK ≥ 10ns (100MHz max SCK frequency).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 16-bit - guarantees full-scale quantization with 65,536 discrete levels and no missing codes across temperature. |
| Sampling Rate | 500ksps - enables real-time capture of signals up to 250kHz Nyquist bandwidth with deterministic timing. |
| SNR | 93.5dB (typ) at fIN = 2kHz, ±10.24V range - corresponds to effective resolution >15.2 bits in high-fidelity measurement applications. |
| INL | ±1.5LSB (max) - ensures monotonicity and linearity critical for closed-loop control and calibration-sensitive instrumentation. |
| Reference | Integrated 2.048V bandgap (20ppm/°C max drift) with 2× gain buffer → 4.096V REFBUF output - eliminates need for external reference in most ±10.24V systems. |
| Power | 36mW (typ) at 500ksps; 300μW in sleep mode - enables low-power portable instrumentation and thermally constrained industrial modules. |
| Temperature Range | –40°C to +85°C (I-grade) - qualified for extended industrial environments including PLC backplanes and motor drive feedback circuits. |
Pinout & Package
Package: 16-lead plastic MSOP (3mm × 4.9mm, 0.5mm pitch), RoHS-compliant, moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDDLBYP (1) | 2.5V LDO bypass | Internally regulated supply for analog core; requires 2.2µF ceramic capacitor to GND for noise suppression. |
| VDD (2) | 5V analog power | Main supply (4.75–5.25V); bypass with 10µF ceramic capacitor to ensure stable sampling performance. |
| GND (3,6,16) | Analog/digital ground | Three dedicated ground pins minimize ground bounce; must be connected to low-impedance PCB ground plane. |
| IN+ (4) | Pseudo-differential analog input (+) | Accepts ±10.24V true bipolar signal relative to IN–; input impedance modeled as 2kΩ + 45pF + 50Ω switch. |
| IN– (5) | Pseudo-differential analog input (–) | Common-mode sense node; limited to ±500mV range relative to GND; ties to remote ground or system AGND. |
| REFBUF (7) | Reference buffer output | Nominally 4.096V (2× VREFIN); decoupled with 47µF ceramic capacitor; can be overdriven externally (2.5–5V). |
| REFIN (8) | Internal reference output / external reference input | 2.048V bandgap output (bypass with 100nF); accepts external reference 1.25–2.4V for enhanced accuracy or drift performance. |
| CNV (9) | Convert trigger input | Rising-edge–sensitive; powers up ADC and initiates conversion; logic levels referenced to OVDD. |
| CHAIN (10) | Mode select for daisy-chain operation | High = chain mode (RDL/SDI becomes SDI); Low = normal mode (RDL/SDI enables SDO tri-state). |
| BUSY (11) | Conversion status indicator | Active-high open-drain output; asserts at CNV↑, deasserts when 16-bit result is ready for readout. |
| RDL/SDI (12) | Bus enable (normal) / Serial data input (chain) | Configurable function controlled by CHAIN pin; determines whether SDO is enabled or receives upstream daisy-chain data. |
| SCK (13) | Serial clock input | Drives SPI interface; supports 100MHz max frequency (tSCK ≥ 10ns); rising edge clocks out MSB-first 2's complement data. |
| SDO (14) | Serial data output | Tri-state CMOS output; presents conversion result or daisy-chain data; logic levels referenced to OVDD. |
| OVDD (15) | I/O interface supply | Digital I/O voltage (1.71–5.25V); sets logic thresholds for CNV, CHAIN, BUSY, RDL/SDI, SCK, SDO; bypass with 0.1µF ceramic. |
Key Features
| Feature | Design Value |
|---|---|
| No pipeline delay, zero cycle latency | Enables deterministic real-time control loops with immediate access to conversion results after BUSY deasserts. |
| Onboard single-shot capable reference buffer | Eliminates external op-amp buffering for REFBUF; supports fast wake-up (200ms) and stable settling for burst-mode acquisition. |
| True bipolar input ranges (±6.25V, ±10.24V, ±12.5V) | Configurable via REFIN/REFBUF overdrive - allows direct interfacing with industrial sensors (e.g., ±10V transducers) without level-shifting circuitry. |
| Automatic nap mode between conversions | Reduces average power proportionally to sampling rate - e.g., 100ksps operation draws ~7.2mA instead of full 18.6mA. |
| SPI-compatible interface with daisy-chain mode | Enables multi-channel synchronous sampling with single SCK and CNV lines - reduces host GPIO count and timing complexity in DAQ systems. |
Applications
| Programmable Logic Controllers | Industrial Process Control |
|---|---|
|
Use Scenario: High-accuracy analog input module acquiring ±10V sensor outputs (e.g., pressure, flow, temperature transmitters) in noisy factory environments. IC Role / Device Role / Timing Role: Primary 16-bit ADC digitizing true bipolar industrial signals with integrated reference stability and common-mode rejection. Use Value: Eliminates external reference and driver op-amps while maintaining ±1.5LSB INL across –40°C to 85°C - reducing BOM cost and board area by >30% vs discrete solutions. |
Use Scenario: Distributed I/O rack capturing synchronized multi-channel voltage/current measurements for closed-loop PID control of chemical reactors. IC Role / Device Role / Timing Role: Synchronous SAR ADC in daisy-chain configuration, triggered by centralized CNV signal for sub-microsecond inter-channel skew. Use Value: 500ksps throughput with zero latency enables 100kHz control loop execution; nap mode cuts power per channel to <10mW at 10ksps update rates. |
| High Speed Data Acquisition | Portable or Compact Instrumentation |
|
Use Scenario: Benchtop oscilloscope front-end digitizing ±10.24V signals at 500ksps with FFT-based spectral analysis (32k-point, 93.5dB SNR). IC Role / Device Role / Timing Role: Precision SAR ADC providing clean, linear digitization with minimal aperture jitter (4ps RMS) and no missing codes. Use Value: 93.5dB SNR and –111dB THD at 2kHz enable accurate harmonic distortion measurement - meeting Class A DSO requirements per IEC 61000-4-30. |
Use Scenario: Battery-powered handheld multimeter or power quality analyzer requiring high DC accuracy and low standby power. IC Role / Device Role / Timing Role: Low-power 16-bit ADC with sleep mode (300μW) and internal reference - enabling >100-hour battery life in intermittent measurement mode. Use Value: Integrated 2.048V reference (20ppm/°C) and auto-nap eliminate calibration drift and reduce active power to 36mW - extending Li-ion runtime by 2.3× vs comparable ADCs. |
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, external reference required; no integrated buffer; LVDS interface only. | Higher resolution/speed but demands precision external reference, driver, and FPGA-level interface support. | Select when >16-bit resolution and >1MSPS throughput are mandatory; avoid if board space, BOM count, or firmware complexity are constrained. |
| ADS8860IDRCT | 16-bit, 1MSPS, single-supply (2.5–5V), no internal reference; SPI-only, no daisy-chain mode. | Lower power (15mW) but lacks bipolar input capability and integrated reference - requires external ±10V signal conditioning. | Select for unipolar, low-power, cost-sensitive applications where ±10.24V direct interface and daisy-chain synchronization are not needed. |
Compared with AD7960BCPZ-RL7 and ADS8860IDRCT, the LTC2327IMS-16#PBF uniquely combines ±10.24V true bipolar input, integrated 2.048V reference with buffer, daisy-chain SPI, and I-grade temperature qualification - delivering lowest system-level design effort for industrial 500ksps DAQ.
Availability
LTC2327IMS-16#PBF is available at Aetrix Electronics and suitable for programmable logic controllers, industrial process control systems, and high-speed data acquisition requiring stable component supply, long-term manufacturability, and extended temperature reliability.
Supply support for LTC2327IMS-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 acquired Linear Technology in 2017 and maintains its precision analog portfolio, including high-performance data converters, references, and signal conditioning ICs for industrial, instrumentation, and aerospace applications.
The LTC2327IMS-16#PBF belongs to Linear's high-speed SAR ADC family designed specifically for industrial data acquisition where true bipolar input, integrated reference stability, and deterministic timing are essential - targeting applications demanding >90dB SNR and ±1.5LSB INL across extended temperature ranges.
FAQ
What is the maximum operating temperature for the LTC2327IMS-16#PBF?
The LTC2327IMS-16#PBF is rated for operation from –40°C to +85°C (I-grade). This specification is guaranteed per the Absolute Maximum Ratings table and Electrical Characteristics section, with all key parameters-including INL, SNR, and reference drift-validated across this full range. Thermal derating is not required up to 85°C ambient.
Does the LTC2327IMS-16#PBF require an external reference?
No, the LTC2327IMS-16#PBF does not require an external reference. It integrates a factory-trimmed 2.048V bandgap reference with 20ppm/°C max drift and a 2× gain reference buffer delivering 4.096V at REFBUF. When used with REFIN = 2.048V and REFBUF = 4.096V, the device achieves its specified ±10.24V input range and 93.5dB SNR without external components.
How does the daisy-chain mode work on the LTC2327IMS-16#PBF?
Daisy-chain mode is enabled by driving CHAIN high. In this mode, RDL/SDI functions as SDI (serial data input), accepting the SDO output from a preceding ADC in the chain. SDO then outputs the local conversion result *after* the upstream data, allowing multiple LTC2327IMS-16#PBF devices to share one SCK and CNV line while outputting concatenated 16-bit results on a single SDO line.
What is the power consumption of the LTC2327IMS-16#PBF during active conversion?
The LTC2327IMS-16#PBF consumes 36mW (typical) at 500ksps with VDD = 5V and OVDD = 2.5V, as specified in the Power Requirements table. This includes combined IVDD + IOVDD current of 14mA (typ). Power scales linearly with sample rate due to automatic nap mode - e.g., at 100ksps, typical power drops to ~7.2mW.
Can the LTC2327IMS-16#PBF accept ±12.5V input signals?
Yes, the LTC2327IMS-16#PBF supports ±12.5V input range by disabling the internal reference buffer and overdriving REFBUF with an external 5V reference (REFIN = 0V, REFBUF = 5V). This configuration is explicitly documented in Table 3 of the datasheet and maintains guaranteed 16-bit no-missing-codes operation and ±1.5LSB INL performance.
LTC2327IMS-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:
- -40°C ~ 85°C
- Supplier Device Package:
- 16-MSOP
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
LTC2327IMS-16#PBF FAQ
1.How can I place an order for LTC2327IMS-16#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2327IMS-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 LTC2327IMS-16#PBF reliable?
The price and inventory of LTC2327IMS-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 LTC2327IMS-16#PBF is usually 5 days.
3.What payment methods are accepted for LTC2327IMS-16#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2327IMS-16#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2327IMS-16#PBF?
LTC2327IMS-16#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2327IMS-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 LTC2327IMS-16#PBF?
For technical support, including LTC2327IMS-16#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2327IMS-16#PBF requirements.
6.How does Aetrix verify that LTC2327IMS-16#PBF is sourced from the original manufacturer or authorized distributors?
All LTC2327IMS-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 LTC2327IMS-16#PBF meets industry standards.
7.What is the process for return or replacement of LTC2327IMS-16#PBF?
All LTC2327IMS-16#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2327IMS-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 LTC2327IMS-16#PBF part is unused and in its original packaging.
Return procedure for LTC2327IMS-16#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LTC2327IMS-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…
