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Analog Devices Inc. LTC6362CDD#PBF
- Part No.:
- LTC6362CDD#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-WFDFN Exposed Pad
- Datasheet:
-
LTC6362CDD#PBF.pdf
- Description:
- IC OPAMP DIFF 1 CIRCUIT 8DFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,308
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Product details
Overview
LTC6362CDD#PBF from Analog Devices (acquired Linear Technology) is a precision, low-power, fully differential op amp optimized as a SAR ADC driver. It delivers 1mA supply current, 200µV max input-referred offset voltage, 3.9nV/√Hz input noise, rail-to-rail I/O swing, and 550ns settling to 18-bit (4ppm) accuracy - enabling high-fidelity signal conditioning in battery-powered instrumentation and industrial data acquisition systems.
For engineers reviewing the LTC6362CDD#PBF datasheet, LTC6362CDD#PBF pinout, LTC6362CDD#PBF application, or LTC6362CDD#PBF equivalent, key selection criteria include its guaranteed 0°C to 70°C operation in the 3mm × 3mm DFN package, shutdown current of 70µA, differential output balance (–57dB), and compatibility with 16-/18-bit SAR ADCs such as LTC2379-18.
Technical Context
The LTC6362CDD#PBF implements a fully differential architecture with independent common-mode feedback via the VOCM pin, enabling precise output common-mode voltage control regardless of input common-mode level. Its internal resistor divider sets VOCM = 2.5V when unconnected under 5V supply, and it supports external overdrive for ADC reference alignment.
It operates from a single 2.8V to 5.25V supply, features rail-to-rail inputs and outputs, and integrates input protection diodes and shutdown logic. The amplifier supports both single-ended-to-differential and fully differential configurations, with gain stability up to 100 and load capacitance tolerance enhanced by series output resistance recommendations.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.8V to 5.25V single supply - enables direct interface with 3.3V and 5V systems without level-shifting. |
| Supply Current (Active) | 1.06mA typical at 5V - supports ultra-low-power portable and sensor-node applications. |
| Input Offset Voltage | 200µV max (input-referred) - ensures <0.005% gain error in 10V full-scale 16-bit systems. |
| Input Noise Density | 3.9nV/√Hz at 100kHz - contributes <12nV/√Hz total output noise in 1kΩ feedback networks. |
| Settling Time | 550ns to 18-bit (4ppm) for 8VP-P step - meets timing budgets of 1.6Msps SAR ADCs like LTC2379-18. |
| THD @ 1kHz | –108.0dB at 8VP-P output - preserves dynamic range in high-SNR measurement chains. |
| Gain-Bandwidth Product | 180MHz - supports stable closed-loop gains up to 100 with >34MHz –3dB bandwidth. |
Pinout & Package
Package: 8-lead (3mm × 3mm) plastic DFN with exposed pad (Pin 9 = V–), rated for 0°C to 70°C operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 (–IN) | Inverting input | Rail-to-rail input stage; accepts signals from V– to V+; protected by back-to-back diodes against >1.4V differential overvoltage. |
| Pin 2 (VOCM) | Output common-mode reference | Sets VOUTCM = (V+OUT + V–OUT)/2; internal 2.5V default at 5V supply; 170kΩ input resistance allows direct connection to ADC reference outputs. |
| Pin 3 (V+) | Positive supply | Accepts 2.8V–5.25V; supplies core amplifier and output stages; clamped to V+ and V– for ESD protection. |
| Pin 4 (+OUT) | Positive differential output | Rail-to-rail capable; sources/sinks up to 35mA; requires ≤100Ω series resistance for >10pF capacitive loads to prevent peaking. |
| Pin 5 (–OUT) | Negative differential output | Complementary to +OUT; maintains balanced drive for differential ADC inputs; same drive strength and settling behavior. |
| Pin 6 / Exposed Pad (V–) | Negative supply / thermal path | Typically 0V ground; must be soldered to PCB for thermal performance (θJC = 45°C/W); defines lower rail for input/output swing. |
| Pin 7 (SHDN) | Shutdown control | Logic-low (≤0.8V above V–) disables amplifier; draws 70µA; floating or tied to V+ enables active mode. |
| Pin 8 (+IN) | Noninverting input | Rail-to-rail input stage; matched bias current and offset characteristics with –IN; protected identically. |
Key Features
| Feature | Design Value |
|---|---|
| Single-supply rail-to-rail I/O | Enables full-swing signal conditioning from 2.8V to 5.25V supplies without dual-rail complexity or level shifters. |
| Differential output balance | –57dB (single-ended input) ensures >100dB CMRR in downstream ADCs by minimizing even-order harmonic distortion. |
| Low-power shutdown mode | Reduces supply current to 70µA - extends battery life in intermittent-sampling systems without sacrificing wake-up speed (2µs turn-on). |
| VOCM pin with internal default | Eliminates external bias components; self-biases to 2.475V–2.525V at 5V supply, simplifying interface to ADC common-mode references. |
| Input protection architecture | Clamping diodes on all pins plus back-to-back diodes between +IN/–IN allow ±10mA fault current handling per pin without damage. |
Applications
| Battery-Powered Instrumentation | Industrial Data Acquisition |
|---|---|
Use Scenario: Portable multimeter or handheld sensor logger acquiring DC-coupled analog signals from precision transducers. IC Role / Device Role / Timing Role: Single-ended-to-differential converter and ADC driver, providing rail-to-rail input range and low-noise amplification before 18-bit SAR conversion. Use Value: 1mA active current and 70µA shutdown enable >1-year battery life; 200µV offset ensures <0.002% absolute accuracy over temperature. | Use Scenario: PLC analog input module digitizing 4–20mA loop signals in electrically noisy factory environments. IC Role / Device Role / Timing Role: Differential front-end driver rejecting common-mode noise while driving LTC2379-18 at 1.6Msps with 550ns settling. Use Value: –57dB output balance and 95dB CMRR suppress power supply ripple and ground bounce; 3.9nV/√Hz noise preserves SNR >101dB. |
| Medical Sensor Signal Conditioning | Test & Measurement Equipment |
Use Scenario: ECG or EEG front-end amplifying microvolt-level biopotential signals prior to digitization. IC Role / Device Role / Timing Role: Low-noise, high-impedance differential preamplifier converting single-ended electrode signals to balanced outputs for noise-immune routing. Use Value: 260nA max input bias current minimizes electrode polarization error; 0.9µV/°C offset drift ensures stable baseline over patient monitoring sessions. | Use Scenario: Benchtop oscilloscope or spectrum analyzer channel digitizing wideband signals up to 100kHz. IC Role / Device Role / Timing Role: High-fidelity ADC driver supporting 16-/18-bit resolution with –116dBc HD2 at 1kHz and fast 550ns settling. Use Value: 180MHz GBWP and 34MHz –3dB bandwidth maintain flat frequency response; THD of –108dB prevents harmonic contamination in spectral analysis. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar differential ADC driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD8138ARMZ | Higher supply current (20mA), wider supply range (±2.5V to ±5.5V), no shutdown mode, 350µV max offset. | Requires dual supply; better for high-speed (>100Msps) pipeline ADCs but less suitable for battery operation. | Select AD8138ARMZ only when dual-supply infrastructure exists and higher bandwidth (>350MHz) is required. |
| THS4561IRGET | Lower noise (1.6nV/√Hz), 2.5mA supply current, integrated RFI filter, no VOCM pin - fixed 2.5V output common mode. | Lacks VOCM flexibility; optimized for fixed-reference ADCs; not suitable where VOCM must track variable ADC references. | Choose THS4561IRGET for lowest-noise, fixed-common-mode designs where VOCM programmability is unnecessary. |
Compared with AD8138ARMZ and THS4561IRGET, the LTC6362CDD#PBF uniquely balances ultra-low power (1mA), VOCM configurability, and precision (200µV offset, 3.9nV/√Hz) in a compact DFN - making it optimal for portable, single-supply, 16-/18-bit SAR-based systems requiring adaptive common-mode alignment.
Availability
LTC6362CDD#PBF is available at Aetrix Electronics and suitable for battery-powered instrumentation, industrial data acquisition, medical sensor signal conditioning, and test & measurement equipment requiring stable component supply across production lifecycles.
Supply support for LTC6362CDD#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 LTC6362CDD#PBF belongs to ADI's precision differential amplifier product line, designed specifically to address the signal integrity, power, and layout challenges of driving high-resolution SAR ADCs in space- and energy-constrained systems.
FAQ
What is the operating temperature range specified for the LTC6362CDD#PBF?
The LTC6362CDD#PBF is specified for operation from 0°C to 70°C. This grade is distinct from the I-grade (–40°C to 85°C) and H-grade (–40°C to 125°C) variants. The C-grade designation confirms its qualification and testing over this commercial temperature range, and it uses the 3mm × 3mm DFN package with exposed V– pad for thermal reliability.
Can the LTC6362CDD#PBF drive the LTC2379-18 18-bit SAR ADC effectively?
Yes, the LTC6362CDD#PBF is explicitly validated to drive the LTC2379-18, as shown in the datasheet's Typical Application (TA01a). It achieves 550ns settling to 18-bit (4ppm) accuracy with 8VP-P output, supports the ADC's 1.6Msps sampling rate, and matches its 2.5V common-mode requirement via the VOCM pin - confirming full functional compatibility in production designs.
How does the VOCM pin function on the LTC6362CDD#PBF, and what happens if left unconnected?
When left unconnected, the VOCM pin on the LTC6362CDD#PBF defaults to 2.475V–2.525V under a 5V supply due to an internal resistor divider. This sets the output common-mode voltage (VOUTCM) to match typical ADC references. External voltage can override this default, enabling alignment with variable or proprietary ADC reference levels - a key differentiator versus fixed-VOCM drivers.
What is the maximum capacitive load the LTC6362CDD#PBF can drive without instability?
The LTC6362CDD#PBF requires series resistance (10Ω–100Ω) from each output to ground when driving >10pF total capacitive load, or >5pF differentially. Without this isolation, peaking or oscillation may occur due to phase margin degradation. The datasheet's Frequency Peaking vs Load Capacitance plot (G20) confirms this design constraint applies across all gain configurations.
Does the LTC6362CDD#PBF support single-ended input configurations?
Yes, the LTC6362CDD#PBF is explicitly designed for single-ended-to-differential conversion. The datasheet's Functional Description and Figure 1 show standard configurations using one input grounded or biased, with gain determined by RF/RI. Its rail-to-rail inputs, low input bias current (260nA max), and VOCM flexibility make it robust for this topology in real-world sensor interfaces.
LTC6362CDD#PBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 8-WFDFN Exposed Pad
- Packaging:
- Tube
- Product Status:
- Last Time Buy
- Amplifier Type:
- Differential
- Number of Circuits:
- 1
- Output Type:
- Differential, Rail-to-Rail
- Slew Rate:
- 45V/µs
- Gain Bandwidth Product:
- 180 MHz
- -3db Bandwidth:
- 34 MHz
- Current - Input Bias:
- 75 nA
- Voltage - Input Offset:
- 75 µV
- Current - Supply:
- 1mA
- Current - Output / Channel:
- -
- Voltage - Supply Span (Min):
- 2.8 V
- Voltage - Supply Span (Max):
- 5.25 V
- Operating Temperature:
- 0°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-DFN (3x3)
LTC6362CDD#PBF FAQ
1.How can I place an order for LTC6362CDD#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC6362CDD#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 LTC6362CDD#PBF reliable?
The price and inventory of LTC6362CDD#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC6362CDD#PBF is usually 5 days.
3.What payment methods are accepted for LTC6362CDD#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC6362CDD#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC6362CDD#PBF?
LTC6362CDD#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC6362CDD#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 LTC6362CDD#PBF?
For technical support, including LTC6362CDD#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC6362CDD#PBF requirements.
6.How does Aetrix verify that LTC6362CDD#PBF is sourced from the original manufacturer or authorized distributors?
All LTC6362CDD#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 LTC6362CDD#PBF meets industry standards.
7.What is the process for return or replacement of LTC6362CDD#PBF?
All LTC6362CDD#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC6362CDD#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 LTC6362CDD#PBF part is unused and in its original packaging.
Return procedure for LTC6362CDD#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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