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Analog Devices Inc. ADUM3195BRQZ
- Part No.:
- ADUM3195BRQZ
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 16-SSOP (0.154", 3.90mm Width)
- Datasheet:
-
ADUM3195BRQZ.pdf
- Description:
- HIGH STABILITY ISOLATED ERROR AM
- Quantity:
- Payment:
- Shipping:
Inventory:2,136
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Product details
Overview
ADUM3195BRQZ from Analog Devices is a reinforced-isolation, single-ended-output isolated amplifier optimized for high-accuracy voltage sensing across galvanic barriers in power electronics. It delivers ±6 mV max output offset voltage at 25°C, ±0.5% max gain error, 210 kHz bandwidth, and operates from 4.5 V to 5.5 V on both sides - enabling precise DC bus monitoring in inverters and on-board chargers.
For engineers reviewing the ADUM3195BRQZ datasheet, ADUM3195BRQZ pinout, ADUM3195BRQZ application, or ADUM3195BRQZ equivalent, key selection criteria include its 3000 Vrms isolation rating, −40°C to +125°C ambient operation, dual 2.5 V references, integrated op amp with 10 GΩ input resistance, and AEC-Q100 qualification for automotive-grade reliability.
Technical Context
The ADUM3195BRQZ implements iCoupler® technology with a PWM-based modulation scheme: the input-side op amp conditions the signal, which is digitized via duty-cycle encoding and transmitted across a transformer barrier; the output side demodulates and reconstructs a linear analog voltage using VREF1. Its architecture eliminates optocoupler drift while maintaining stable transfer function over temperature.
It integrates two precision 2.5 V references (VREF1/VREF2), each with ±25 ppm/°C tempco and 1 mA drive capability, plus an input op amp featuring 85 dB open-loop gain, 15 MHz GBW, and ±0.2 nA input bias current - supporting configurable gain, inverting, or unity-gain configurations for feedback and sensing roles.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Isolation Voltage | 3000 Vrms for 1 minute - meets UL 1577 and DIN VDE V 0884-11:2017-01 reinforced insulation requirements. |
| Output Offset Voltage | ±6 mV max at 25°C - enables sub-0.1% full-scale error in 4.3 V linear range applications like 1000 V DC bus monitoring. |
| Gain Error | ±0.5% max - ensures accurate voltage scaling without calibration in closed-loop DC-DC converter error amplifiers. |
| Bandwidth | 210 kHz - supports dynamic response for fast-switching power stages up to ~100 kHz fundamental frequency. |
| Input Resistance | 10 GΩ - minimizes loading on high-impedance voltage dividers, reducing power loss and thermal drift in precision sensing. |
| Common-Mode Transient Immunity | 100–150 kV/µs - maintains signal integrity during rapid dV/dt events in SiC/GaN inverter switching nodes. |
| Operating Temperature | −40°C to +125°C ambient - qualified per AEC-Q100 for under-hood automotive on-board chargers and traction inverters. |
| Supply Range | VDD1 & VDD2: 4.5 V to 5.5 V - compatible with standard 5 V logic rails and tolerant of industrial supply ripple. |
Pinout & Package
The ADUM3195BRQZ is housed in a 16-lead QSOP (RQ-16) package with 3.2 mm creepage/clearance and reinforced insulation rated to 636 Vpeak.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, VDD1 | Side 1 Supply | Power for input-side circuitry (op amp, modulator); requires 0.1 µF + 1 µF decoupling to GND1. |
| 2, 8, GND1 | Side 1 Ground | Reference for VIN+, VIN−, VOUT2, and VREF2; forms isolated input domain with VDD1. |
| 4, VREF1 | Output-Side Reference | 2.5 V ±0.01 V reference for output reconstruction; load ≤15 pF to maintain stability. |
| 6, VOUT1 | Isolated Output | Single-ended analog output (0.25 V to VDD2−0.7 V); drives ADCs or controllers directly with 35 Ω impedance. |
| 9, 15, GND2 | Side 2 Ground | Reference for VOUT1, VREF1, and output-side logic; forms isolated output domain with VDD2. |
| 10, VOUT2 | Input-Side Op Amp Output | Internal node used for configuring gain or feedback; not externally accessible in standard operation. |
| 11, VIN− | Inverting Input | High-impedance node for differential or inverting amplifier configurations in isolated feedback loops. |
| 12, VIN+ | Noninverting Input | Main high-Z sensing input (10 GΩ); accepts DC or AC-coupled signals up to VDD2−0.7 V. |
| 13, VREF2 | Input-Side Reference | 2.5 V ±0.01 V reference for op amp biasing; supports AC monitoring and inverting configurations. |
| 16, VDD2 | Side 2 Supply | Power for output-side circuitry (demodulator, buffer); requires 0.1 µF + 1 µF decoupling to GND2. |
Key Features
| Feature | Design Value |
|---|---|
| Reinforced Isolation | VIORM = 636 Vpeak, certified to DIN VDE V 0884-11:2017-01 - enables safe operation in 400 V AC mains and 800 V DC EV systems. |
| Low Drift Performance | Output offset drift −22 µV/°C and gain drift ±27 ppm/°C - eliminates recalibration over automotive temperature range. |
| Dual Precision References | Two independent 2.5 V outputs (VREF1/VREF2), ±25 ppm/°C tempco, 1 mA drive - simplifies biasing and reduces external component count. |
| Integrated Op Amp | 85 dB open-loop gain, 15 MHz GBW, ±0.2 nA input bias - supports active filtering, gain adjustment, and inverting configurations without external ICs. |
| Magnetic Field Immunity | Immune to ≤8 kGs at 1 MHz - ensures reliable operation near high-current busbars and power inductors in motor drives. |
| AEC-Q100 Qualified | Grade 1 (−40°C to +125°C) qualification - meets automotive reliability and lifetime requirements for on-board chargers and inverters. |
Applications
| DC Bus Voltage Monitoring | Isolated DC-DC Converter Feedback |
|---|---|
|
Use Scenario: Real-time measurement of high-voltage DC links (e.g., 400–1000 V) in EV traction inverters and solar string optimizers. IC Role / Device Role / Timing Role: Isolated amplifier providing galvanically separated, low-drift voltage feedback to MCU or DSP. Use Value: Enables accurate state-of-charge estimation and overvoltage protection with <0.1% total error across temperature, eliminating optocoupler aging effects. |
Use Scenario: Closed-loop regulation of isolated DC-DC converters in server PSUs and industrial PLCs. IC Role / Device Role / Timing Role: Error amplifier transmitting sensed output voltage across isolation barrier to PWM controller. Use Value: Maintains tight output regulation (<±1%) despite common-mode transients up to 150 kV/µs, improving system efficiency and EMI robustness. |
| On-Board Charger Sensing | AC Grid Voltage Monitoring |
|
Use Scenario: Bidirectional voltage sensing in automotive OBCs during AC-to-DC and DC-to-AC modes. IC Role / Device Role / Timing Role: High-Z isolated input stage conditioning grid or battery voltage before ADC sampling. Use Value: Supports AEC-Q100-compliant designs with 125°C ambient operation and 3000 Vrms isolation for functional safety compliance (ISO 26262 ASIL-B). |
Use Scenario: Isolated RMS voltage measurement of 230 V AC mains in smart meters and grid-tied inverters. IC Role / Device Role / Timing Role: AC-coupled input configured with VREF2 bias and high-pass filtering for true-RMS sensing. Use Value: Delivers flat frequency response up to 210 kHz with <0.5% gain error, enabling accurate harmonic analysis and power quality monitoring. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar isolated amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AMC1301DWVR | 200 kHz bandwidth, ±0.5% gain error, 1000 Vrms isolation, SOIC-8 package | Limited to lower isolation voltage and single reference; no integrated op amp on input side | Preferred for cost-sensitive industrial SMPS where 1000 Vrms suffices and board space is constrained. |
| SI8920BD-IS | 250 kHz bandwidth, ±0.3% gain error, 5 kVrms isolation, wide-body SOIC-16 | Higher CMTI (200 kV/µs), but no internal references or op amp; requires external bias network | Selected when extreme transient immunity is critical (e.g., SiC gate drivers) and external reference design is acceptable. |
Compared with AMC1301DWVR and SI8920BD-IS, the ADUM3195BRQZ uniquely integrates dual 2.5 V references and a fully featured op amp - reducing BOM count and layout complexity in isolated feedback and sensing circuits requiring high accuracy and automotive qualification.
Availability
ADUM3195BRQZ is available at Aetrix Electronics and suitable for inverters, DC-to-DC converters, and on-board chargers requiring stable component supply, long-term lifecycle support, and automotive-grade reliability.
Supply support for ADUM3195BRQZ 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. is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, automotive, communications, and healthcare markets.
The ADUM3195BRQZ belongs to Analog Devices' iCoupler® isolated amplifier product line, designed specifically for high-accuracy, drift-stable voltage sensing in safety-critical power conversion systems operating across extended temperature ranges.
FAQ
What is the maximum continuous working voltage supported by the ADUM3195BRQZ?
The ADUM3195BRQZ supports a maximum continuous working voltage of 225 Vrms for reinforced insulation per IEC 60664-1 in Pollution Degree 2 environments. This rating is defined by package creepage and is validated per DIN VDE V 0884-11:2017-01. The device achieves 3000 Vrms isolation for 1 minute, but sustained operation must remain within the 225 Vrms limit to ensure long-term reliability and safety compliance.
Does the ADUM3195BRQZ require external passive components for basic operation?
Yes, the ADUM3195BRQZ requires external decoupling capacitors: 0.1 µF and 1 µF ceramics between VDD1–GND1 and VDD2–GND2. VREF1 must be loaded with ≤15 pF capacitance; VREF2 supports up to 22 nF. For high-voltage sensing, external resistive dividers and compensation capacitors (e.g., C2 ≥ R1 × C1/R2) are needed per the datasheet's design guidelines to suppress overshoot on VIN+.
Can the ADUM3195BRQZ be used in inverting amplifier configurations?
Yes, the ADUM3195BRQZ supports inverting configurations by wiring VREF2 to VIN+ and applying the signal to VIN−. As described in Figure 38 of the datasheet, this yields VOUT2 = VREF2 – (R2/R1) × (VBUS − VREF2), enabling polarity inversion for specific feedback topologies. The reconstructed VOUT1 preserves this inverted relationship, making it suitable for error amplifiers requiring negative gain.
What is the purpose of the two independent reference outputs (VREF1 and VREF2) in the ADUM3195BRQZ?
VREF1 provides a stable 2.5 V reference on the output side for reconstructing the isolated analog signal at VOUT1. VREF2 supplies a matched 2.5 V reference on the input side, enabling biasing of AC-coupled inputs or configuring inverting amplifier topologies. Both references exhibit ±25 ppm/°C tempco and 1 mA drive capability, ensuring matched thermal behavior and eliminating need for external precision references in most designs.
How does the ADUM3195BRQZ achieve immunity to magnetic fields during high-current switching?
The ADUM3195BRQZ achieves magnetic field immunity through transformer geometry and decoder threshold design: its receiving coil limits induced voltage to <0.8 V at 8 kGs and 1 MHz, well below the 1.6 V decoder trip point. This allows reliable operation near high-current paths - e.g., a 20 kA transient at 1 MHz must occur within 5 mm to affect functionality - making it suitable for SiC/GaN inverter gate driver feedback loops.
ADUM3195BRQZ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 16-SSOP (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Amplifier Type:
- Isolation
- Number of Circuits:
- 1
- Output Type:
- Single-Ended
- Slew Rate:
- -
- Gain Bandwidth Product:
- 15 MHz
- -3db Bandwidth:
- 210 kHz
- Current - Input Bias:
- 200 pA
- Voltage - Input Offset:
- 1.5 mV
- Current - Supply:
- 5.9mA
- Current - Output / Channel:
- 1 mA
- Voltage - Supply Span (Min):
- 4.5 V
- Voltage - Supply Span (Max):
- 5.5 V
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-QSOP
ADUM3195BRQZ FAQ
1.How can I place an order for ADUM3195BRQZ through Aetrix?
Please submit a Request for Quotation (RFQ) for ADUM3195BRQZ 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 ADUM3195BRQZ reliable?
The price and inventory of ADUM3195BRQZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADUM3195BRQZ is usually 5 days.
3.What payment methods are accepted for ADUM3195BRQZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADUM3195BRQZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADUM3195BRQZ?
ADUM3195BRQZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADUM3195BRQZ 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 ADUM3195BRQZ?
For technical support, including ADUM3195BRQZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADUM3195BRQZ requirements.
6.How does Aetrix verify that ADUM3195BRQZ is sourced from the original manufacturer or authorized distributors?
All ADUM3195BRQZ 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 ADUM3195BRQZ meets industry standards.
7.What is the process for return or replacement of ADUM3195BRQZ?
All ADUM3195BRQZ units undergo pre-shipment inspection (PSI). If there is an issue with ADUM3195BRQZ, 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 ADUM3195BRQZ part is unused and in its original packaging.
Return procedure for ADUM3195BRQZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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