My Inquiry
My Account
Analog Devices Inc. AD8629TRZ-EP
- Part No.:
- AD8629TRZ-EP
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
AD8629TRZ-EP.pdf
- Description:
- IC OPAMP ZER-DRIFT 2CIRC 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,393
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
AD8629TRZ-EP from Analog Devices is a zero-drift, rail-to-rail input/output operational amplifier optimized for precision DC-coupled signal conditioning in harsh environments. It delivers 1 µV typical offset voltage, 0.002 µV/°C typical drift, and 0.5 µV p-p (0.1–10 Hz) noise, operating from 2.7 V to 5 V single supply. It is used in thermocouple amplifiers and medical instrumentation requiring stable gain and near-zero thermal error over −55°C to +125°C.
For engineers reviewing the AD8629TRZ-EP datasheet, AD8629TRZ-EP pinout, AD8629TRZ-EP application, or AD8629TRZ-EP equivalent, key selection criteria include ultralow drift performance, extended temperature qualification, SOIC_N package compatibility, and absence of external trimming components in high-accuracy sensor front-ends.
Technical Context
The AD8629TRZ-EP employs auto-zeroing architecture with internal chopper-stabilized correction to eliminate 1/f noise and minimize drift without introducing switching artifacts. Its rail-to-rail input stage supports common-mode voltages from ground to V+, while the output swings within 1 mV of rails under light load.
Specified across −55°C to +125°C, it maintains CMRR ≥115 dB and PSRR ≥115 dB over full temperature and supply range, enabling direct interfacing with low-output-impedance sensors like strain gages and photodiodes without level-shifting circuitry.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Offset Voltage | 1 µV typical - enables sub-µV system-level offset budgeting in 24-bit ADC front-ends |
| Offset Drift | 0.002 µV/°C typical - ensures <10 nV total drift over full −55°C to +125°C range |
| Supply Range | 2.7 V to 5 V single supply - compatible with Li-ion battery and industrial 3.3 V/5 V rails |
| Gain Bandwidth | 2.5 MHz at 5 V - supports closed-loop bandwidths up to ~200 kHz with 10× gain |
| Input Bias Current | 100 pA max - preserves high-impedance sensor node integrity (e.g., pH electrodes) |
| Noise (0.1–10 Hz) | 0.5 µV p-p - minimizes baseline wander in ECG and precision weigh-scale applications |
| CMRR / PSRR | 130 dB typical - rejects power supply ripple and common-mode interference in noisy industrial settings |
Pinout & Package
AD8629TRZ-EP is housed in an 8-lead narrow SOIC (SOIC_N, package option R-8), JEDEC MS-012-AA compliant, with 1.27 mm lead pitch and 5.00 mm × 4.00 mm body dimensions.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OUT A) | Amplifier A output | Drives load directly; rail-to-rail swing supports full dynamic range utilization |
| 2 (–IN A) | Inverting input A | Accepts feedback network; high impedance avoids loading of precision dividers |
| 3 (+IN A) | Non-inverting input A | Connects to reference or sensor; low bias current prevents voltage error in high-Z sources |
| 4 (V–) | Negative supply | Grounded in single-supply operation; establishes reference for rail-to-rail input stage |
| 5 (+IN B) | Non-inverting input B | Second channel input; electrically isolated from Channel A per datasheet layout guidance |
| 6 (–IN B) | Inverting input B | Independent feedback node; supports dual-channel differential sensing without crosstalk |
| 7 (OUT B) | Amplifier B output | Matches Channel A performance; enables dual-sensor or redundancy architectures |
| 8 (V+) | Positive supply | Accepts 2.7–5 V; internal regulation ensures stable core bias across supply variation |
Key Features
| Feature | Design Value |
|---|---|
| Zero-drift architecture | Eliminates thermal-induced offset drift without external calibration or digital correction |
| Rail-to-rail I/O | Enables full-scale signal capture from grounded sensors and maximizes SNR in 16-/24-bit systems |
| Enhanced product qualification | Meets AQEC standards with controlled manufacturing baseline and extended temp support (−55°C to +125°C) |
| No external capacitor required | Reduces BOM count and PCB area; eliminates capacitor aging and tolerance-related gain errors |
| Low 1/f noise | 0.5 µV p-p (0.1–10 Hz) enables stable DC measurements in slow-response transducers |
Applications
| Pressure and Position Sensors | Medical Instrumentation |
|---|---|
Use Scenario: Amplifying millivolt-level outputs from piezoresistive pressure sensors in aerospace hydraulic monitoring. IC Role / Device Role / Timing Role: Precision DC-coupled gain stage with near-zero thermal drift to preserve calibration over wide ambient swings. Use Value: Maintains <±0.005% FS accuracy over −55°C to +125°C without recalibration, reducing field maintenance cycles. | Use Scenario: Front-end amplification of biopotential signals (e.g., ECG, EEG) in portable diagnostic devices. IC Role / Device Role / Timing Role: Low-noise, low-drift buffer and gain stage preceding sigma-delta ADC conversion. Use Value: 0.5 µV p-p noise and 1 µV offset prevent baseline wander and enable detection of <10 µV cardiac features. |
| Thermocouple Amplifiers | Precision Current Sensing |
Use Scenario: Cold-junction compensation and linearization of Type K thermocouple outputs in industrial furnace controllers. IC Role / Device Role / Timing Role: High-common-mode-rejection amplifier rejecting heater EMI while amplifying microvolt thermocouple EMF. Use Value: 130 dB CMRR suppresses 60 Hz pickup; 0.002 µV/°C drift avoids temperature-induced span error in closed-loop control. | Use Scenario: Bidirectional shunt-based current measurement in 48 V battery management systems. IC Role / Device Role / Timing Role: High-side or low-side current sense amplifier with rail-to-rail input referenced to common-mode voltage up to 48 V. Use Value: Input voltage range includes ground, enabling accurate low-side sensing; 100 pA bias current prevents shunt error at µA-level standby currents. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD8628TRZ-EP | Single-channel version; identical specs except no Channel B; same SOIC_N package | Used where only one amplifier is needed; reduces channel crosstalk risk in ultra-low-noise designs | Select AD8628TRZ-EP when dual-channel functionality is unnecessary and board space is constrained |
| LTC2057HMS8#PBF | Higher supply current (1.6 mA vs. 1.1 mA); wider supply range (2.7–12 V); different pinout (MSOP-8) | Supports higher-voltage sensor interfaces but requires PCB redesign due to non-pin-compatible layout | Choose LTC2057HMS8#PBF only if >5 V operation or enhanced ESD robustness (8 kV HBM) is mandatory |
Compared with AD8629TRZ-EP, AD8628TRZ-EP offers identical precision in half the footprint, while LTC2057HMS8#PBF trades lower power and SOIC_N compatibility for broader supply flexibility and higher ESD rating-requiring layout revision.
Availability
AD8629TRZ-EP is available at Aetrix Electronics and suitable for pressure sensor modules, medical diagnostic equipment, and thermocouple-based industrial controllers requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for AD8629TRZ-EP 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, headquartered in Norwood, MA.
The AD8629-EP belongs to Analog Devices' enhanced product line targeting defense, aerospace, and high-reliability industrial applications, designed specifically for operation across −55°C to +125°C with controlled manufacturing and extended qualification data.
FAQ
What is the maximum operating temperature range for the AD8629TRZ-EP?
The AD8629TRZ-EP is qualified for continuous operation from −55°C to +125°C, meeting AQEC standards for enhanced product reliability in defense and aerospace applications. This extended range is verified per the datasheet's Absolute Maximum Ratings and Electrical Characteristics tables, with all key parameters-including offset drift and CMRR-specified across this full interval. The AD8629TRZ-EP maintains guaranteed performance without derating at either temperature extreme.
Does the AD8629TRZ-EP require external capacitors for stability?
No, the AD8629TRZ-EP is internally compensated and requires no external capacitors for unity-gain stability. The datasheet explicitly states "No external components required" in both the Features and General Description sections. This simplifies layout, eliminates capacitor-related drift or aging effects, and ensures consistent performance across temperature and unit-to-unit variation without tuning.
Is the AD8629TRZ-EP pin-compatible with standard commercial-grade AD8629 variants?
Yes, the AD8629TRZ-EP shares identical pinout, package outline (8-lead SOIC_N, R-8), and electrical behavior with commercial AD8629 variants, including AD8629ARZ. However, the -EP suffix denotes enhanced product qualification-controlled manufacturing baseline, extended temperature testing, and AQEC compliance-not a pinout change. No PCB modification is needed when upgrading from commercial to EP grade.
What is the typical input bias current of the AD8629TRZ-EP at 25°C?
The typical input bias current of the AD8629TRZ-EP at 25°C is 30 pA, with a maximum of 100 pA across the full −55°C to +125°C range. This value is specified in Table 1 (VS = 5.0 V) and Table 2 (VS = 2.7 V) of the datasheet under "Input Bias Current (IB)". Such ultra-low bias current preserves signal integrity in high-impedance sensor interfaces like photodiodes and pH electrodes.
Can the AD8629TRZ-EP operate from a 2.7 V single supply?
Yes, the AD8629TRZ-EP is fully specified for 2.7 V to 5 V single-supply operation. Electrical Characteristics tables explicitly list performance at VS = 2.7 V, including rail-to-rail input range (0 V to 2.7 V), output swing (within 1 mV of rails), and 0.75–1.0 mA supply current. This makes it suitable for battery-powered instrumentation where low-voltage operation is critical.
AD8629TRZ-EP Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Amplifier Type:
- Zero-Drift
- Number of Circuits:
- 2
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 1V/µs
- Gain Bandwidth Product:
- 2.5 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 30 pA
- Voltage - Input Offset:
- 1 µV
- Current - Supply:
- 850µA (x2 Channels)
- Current - Output / Channel:
- 30 mA
- Voltage - Supply Span (Min):
- 2.7 V
- Voltage - Supply Span (Max):
- 5 V
- Operating Temperature:
- -55°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
AD8629TRZ-EP FAQ
1.How can I place an order for AD8629TRZ-EP through Aetrix?
Please submit a Request for Quotation (RFQ) for AD8629TRZ-EP 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 AD8629TRZ-EP reliable?
The price and inventory of AD8629TRZ-EP are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD8629TRZ-EP is usually 5 days.
3.What payment methods are accepted for AD8629TRZ-EP?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD8629TRZ-EP transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD8629TRZ-EP?
AD8629TRZ-EP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD8629TRZ-EP 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 AD8629TRZ-EP?
For technical support, including AD8629TRZ-EP datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD8629TRZ-EP requirements.
6.How does Aetrix verify that AD8629TRZ-EP is sourced from the original manufacturer or authorized distributors?
All AD8629TRZ-EP 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 AD8629TRZ-EP meets industry standards.
7.What is the process for return or replacement of AD8629TRZ-EP?
All AD8629TRZ-EP units undergo pre-shipment inspection (PSI). If there is an issue with AD8629TRZ-EP, 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 AD8629TRZ-EP part is unused and in its original packaging.
Return procedure for AD8629TRZ-EP:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AD8629TRZ-EP Tags
-
LM358DT
STMicroelectronics
-
LM358DR
Texas Instruments
-
LM2904DR
Texas Instruments
-
LM358ADR
Texas Instruments
-
LM2904DGKR
Texas Instruments
-
LM324DR
Texas Instruments
-
MCP6006T-E/OT
Microchip Technology
-
MCP6006UT-E/OT
Microchip Technology
-
LM324PWR
Texas Instruments
-
LM2902PWR
Texas Instruments
-
LM2902DR
Texas Instruments
-
LM358P
Texas Instruments
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…
