My Inquiry
My Account
Texas Instruments OPA828IDR
- Part No.:
- OPA828IDR
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
OPA828IDR.pdf
- Description:
- IC OPAMP JFET 1 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,526
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
OPA828IDR from Texas Instruments is a single-channel, JFET-input operational amplifier optimized for high-precision, low-noise signal conditioning in ±4 V to ±18 V dual-supply systems. It delivers 45 MHz gain bandwidth, 150 V/μs slew rate, and ultra-low 60 nVRMS (0.1–10 Hz) input voltage noise - enabling 14-bit settling in 120 ns for high-resolution data acquisition front ends.
For engineers reviewing the OPA828IDR datasheet, OPA828IDR pinout, OPA828IDR application, or OPA828IDR equivalent, key selection criteria include its 25 μV max input offset voltage (DGN package), 0.2 μV/°C drift, MUX-friendly inputs, and thermal-pad-enhanced HVSSOP-8 packaging for precision sensor interfaces and ultrasound analog signal chains.
Technical Context
The OPA828IDR implements a laser-trimmed JFET input stage with phase-reversal protection, eliminating output inversion when common-mode inputs exceed rails - critical for robust transimpedance and mixed-signal front-end operation. Its SiGe-complementary process enables simultaneous dc precision (±25 μV offset, ±0.2 μV/°C drift) and ac performance (45 MHz GBW, 150 V/μs slew).
Designed as a drop-in upgrade to OPA627 and OPA827, the OPA828IDR maintains identical SOIC-8 pin compatibility while adding overload power limiting, improved 0.1–10 Hz noise (60 nVRMS), and enhanced ESD robustness (±2 kV HBM). The DGN package's exposed thermal pad supports ≤56.7°C/W junction-to-ambient resistance under proper PCB layout.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain bandwidth | 45 MHz - supports stable closed-loop operation up to 10 MHz at G = +10 without compensation. |
| Slew rate | 150 V/μs - enables full-scale 10-V step response within 67 ns, critical for fast-settling ADC drivers. |
| Input offset voltage | ±25 μV (max, DGN package) - reduces dc error to <0.00025% of 10-V full scale, preserving 16-bit linearity. |
| 0.1–10 Hz noise | 60 nVRMS - ensures minimal low-frequency drift in precision weigh scales and strain-gauge amplifiers. |
| Input bias current | ±0.2 pA (typ, DGN package) - allows use with >1 GΩ source impedances without significant dc error. |
| Supply range | ±4 V to ±18 V - supports industrial ±15 V rails and wide-range battery-powered instrumentation. |
| Quiescent current | 5.5 mA/channel - balances low-noise performance with power efficiency in thermally constrained designs. |
Pinout & Package
OPA828IDR is packaged in an 8-pin HVSSOP (DGN) with exposed thermal pad - a thermally enhanced variant of SOIC-8 offering 56.7°C/W RθJA (vs. 121.5°C/W for SOIC-8) and requiring soldering of the thermal pad to a ground or V− plane per TI design guidelines.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 5, 8 | No connect (NC) | Internally unconnected; may be left floating or grounded for mechanical stability or EMI reduction. |
| 2 | Inverting input (–IN) | Differential input node; MUX-friendly architecture prevents latch-up during channel switching. |
| 3 | Noninverting input (+IN) | High-impedance JFET input (1012 Ω || 9 pF); immune to phase reversal beyond rail limits. |
| 4 | Negative supply (V–) | Lowest potential rail; thermal pad must be tied to V– or ground to minimize input leakage (<1 pA). |
| 6 | Output (OUT) | Capable of ±30 mA linear output drive into 600 Ω; short-circuit protected to ±50 mA. |
| 7 | Positive supply (V+) | Highest potential rail; supports up to ±18 V; PSRR >108 dB minimizes supply ripple coupling. |
| Thermal pad | Exposed copper pad | Electrically isolated (>10 MΩ) but thermally conductive; mandatory solder connection for thermal reliability. |
Key Features
| Feature | Design Value |
|---|---|
| Laser-trimmed offset & drift | ±25 μV max offset and ±0.2 μV/°C max drift over –40°C to +125°C - eliminates need for external calibration in field-deployed instruments. |
| MUX-friendly inputs | Input stage remains stable during rapid common-mode transitions - enables reliable multiplexed sensor arrays without output glitches. |
| Phase-reversal protection | Output clamps to appropriate rail instead of inverting when inputs exceed (V–) – 0.5 V or (V+) + 0.5 V - prevents system-level latch-up in fault conditions. |
| Overload power limiter | Internal circuitry limits dissipation during sustained output saturation - protects die integrity during transient overloads in medical imaging front ends. |
| High CMRR & PSRR | 108 dB CMRR and >108 dB PSRR at dc - rejects interference from noisy digital supplies and shared analog grounds in mixed-signal PCBs. |
Applications
| Data Acquisition Systems | Ultrasound Signal Chains |
|---|---|
|
Use Scenario: 16-bit to 18-bit SAR or sigma-delta ADC front ends acquiring slow-varying sensor signals (e.g., RTDs, thermocouples) with sub-μV resolution requirements. IC Role / Device Role / Timing Role: Precision buffer and gain stage driving ADC reference and input pins with minimal added noise and offset. Use Value: 60 nVRMS (0.1–10 Hz) noise and ±25 μV offset preserve effective resolution beyond 16 bits without software correction. |
Use Scenario: Receive-path amplification in portable ultrasound scanners where low-noise, high-bandwidth analog front ends condition weak echo signals from piezoelectric transducers. IC Role / Device Role / Timing Role: Low-noise transimpedance amplifier (TIA) and variable-gain amplifier (VGA) stage before ADC sampling. Use Value: 45 MHz GBW and 150 V/μs slew support >10 MHz echo bandwidth; 0.2 μV/°C drift ensures stable gain across patient-room temperature variations. |
| Lab Instrumentation | Optical Transceiver Modules |
|
Use Scenario: High-accuracy benchtop multimeters and source-measure units requiring femtoampere-level input bias current and nanovolt-level offset stability. IC Role / Device Role / Timing Role: Input buffer and integrator core in precision current-to-voltage conversion circuits. Use Value: ±0.2 pA typical input bias current enables measurement of currents down to 100 fA with <0.1% error; laser trimming ensures long-term drift <0.5 μV/month. |
Use Scenario: Post-amplification of photodiode current outputs in 10G/25G optical receiver modules where signal integrity and power efficiency are critical. IC Role / Device Role / Timing Role: Low-noise post-amplifier converting transimpedance output to single-ended voltage for CDR ICs. Use Value: 4 nV/√Hz noise density at 1 kHz and 120 ns 14-bit settling enable clean recovery of high-speed PAM4 eye diagrams without added jitter. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA827IDR | Lower GBW (22 MHz), higher 0.1–10 Hz noise (110 nVRMS), same SOIC-8 package; no thermal pad. | Targeted at lower-speed precision apps (e.g., DC-coupled oscilloscope front ends) where 45 MHz is unnecessary. | Select OPA827IDR only if cost sensitivity outweighs need for 120 ns 14-bit settling and 60 nVRMS noise. |
| ADA4625-1ARZ | Higher input bias current (±20 pA), lower slew rate (34 V/μs), wider supply (±5 V to ±18 V); SOIC-8 only. | Better suited for high-source-impedance pH sensors where ultra-low bias current is less critical than rail-to-rail output swing. | Choose ADA4625-1ARZ when output swing to rails is required and 150 V/μs slew is not needed - not a drop-in replacement. |
Compared with OPA828IDR, OPA827IDR trades 2× bandwidth and 45% lower low-frequency noise for lower cost and legacy compatibility, while ADA4625-1ARZ sacrifices speed and input impedance for rail-to-rail output and superior CMRR at high frequencies - neither matches OPA828IDR's combined precision-speed-noise profile.
Availability
OPA828IDR is available at Aetrix Electronics and suitable for data acquisition systems, ultrasound scanners, and lab instrumentation requiring stable component supply with guaranteed long-term manufacturability and consistent parametric performance across production lots.
Supply support for OPA828IDR 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
Texas Instruments is a global semiconductor leader specializing in analog and embedded processing technologies, with decades of expertise in high-precision op-amps and signal-chain solutions.
The OPA828IDR belongs to TI's OPAx828 family - engineered specifically for next-generation high-resolution data acquisition and medical imaging systems demanding simultaneous low noise, low drift, and high speed.
FAQ
What is the maximum operating temperature range for the OPA828IDR?
The OPA828IDR is specified for continuous operation from –40°C to +125°C ambient temperature. Its laser-trimmed offset drift of ±0.2 μV/°C (DGN package) is guaranteed across this full range, making it suitable for under-hood automotive sensors and industrial PLC modules where thermal stability is critical. The device's absolute maximum junction temperature is 150°C.
Does the OPA828IDR require external compensation for unity-gain stability?
No - the OPA828IDR is internally compensated for unity-gain stability. It achieves 57° phase margin with 30 pF capacitive load at G = +1, supporting direct connection to ADC inputs or cables without isolation resistors. However, for optimal settling time in 14-bit systems, TI recommends limiting CL to ≤20 pF and using the recommended PCB layout with ground-plane beneath the DGN thermal pad.
How does the thermal pad on the OPA828IDR's HVSSOP package affect thermal performance?
The exposed thermal pad on the OPA828IDR's DGN package reduces RθJA from 121.5°C/W (SOIC-8) to 56.7°C/W when soldered to a 1-in² copper pour tied to V− or ground. This 2.1× improvement prevents thermal runaway during sustained 30-mA output drive and extends lifetime in sealed enclosures. TI specifies >90% solder coverage for reliable thermal conduction.
Can the OPA828IDR be used in single-supply configurations?
Yes - the OPA828IDR operates from 8 V to 36 V single supply (e.g., +12 V and GND) or ±4 V to ±18 V dual supply. Its input common-mode range extends to (V–) + 2.5 V and (V+) – 3.5 V, allowing rail-to-rail input operation with ±15 V supplies. Output swing is typically within 1.2 V of each rail at 10-kΩ load, supporting wide dynamic range in single-supply DAQ systems.
What is the significance of "MUX-friendly inputs" in the OPA828IDR datasheet?
MUX-friendly inputs mean the OPA828IDR's JFET stage avoids input-stage latch-up or phase reversal when rapidly switching between channels with large common-mode voltage differences - a common failure mode in multiplexed sensor arrays. This allows direct connection to analog multiplexers like TMUX136 without external clamping diodes or series resistors, simplifying PCB layout and reducing signal path errors.
OPA828IDR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- J-FET
- Number of Circuits:
- 1
- Output Type:
- -
- Slew Rate:
- 150V/µs
- Gain Bandwidth Product:
- 45 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 1 pA
- Voltage - Input Offset:
- 50 µV
- Current - Supply:
- 5.5mA
- Current - Output / Channel:
- 30 mA
- Voltage - Supply Span (Min):
- 8 V
- Voltage - Supply Span (Max):
- 36 V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
OPA828IDR FAQ
1.How can I place an order for OPA828IDR through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA828IDR 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 OPA828IDR reliable?
The price and inventory of OPA828IDR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA828IDR is usually 5 days.
3.What payment methods are accepted for OPA828IDR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA828IDR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA828IDR?
OPA828IDR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA828IDR 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 OPA828IDR?
For technical support, including OPA828IDR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA828IDR requirements.
6.How does Aetrix verify that OPA828IDR is sourced from the original manufacturer or authorized distributors?
All OPA828IDR 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 OPA828IDR meets industry standards.
7.What is the process for return or replacement of OPA828IDR?
All OPA828IDR units undergo pre-shipment inspection (PSI). If there is an issue with OPA828IDR, 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 OPA828IDR part is unused and in its original packaging.
Return procedure for OPA828IDR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
OPA828IDR 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…
