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Analog Devices Inc. OP470GSZ
- Part No.:
- OP470GSZ
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 16-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
OP470GSZ.pdf
- Description:
- IC OPAMP GP 4 CIRCUIT 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:182
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Product details
Overview
OP470GSZ from Analog Devices is a very low-noise quad operational amplifier with 5 nV/√Hz max voltage noise density at 1 kHz, 0.4 mV max input offset voltage, and 6 MHz gain-bandwidth product - designed for precision instrumentation, low-noise active filters, and quad buffer applications requiring high channel matching and stable DC performance.
For engineers reviewing the OP470GSZ datasheet, OP470GSZ pinout, OP470GSZ application, or OP470GSZ equivalent, this page delivers verified specifications, package-confirmed pin functions, real-world use scenarios in audio and measurement systems, and two validated alternative op amps with documented technical and application differences.
Technical Context
The OP470GSZ integrates four matched, monolithic op amp cores on a single die, each featuring bipolar input stage optimized for low voltage noise (3.2–5.0 nV/√Hz) at the expense of higher current noise (0.4–1.7 pA/√Hz), making it ideal for low-source-impedance signal conditioning. Its unity-gain stability, 2 V/ms slew rate, and 1000 V/mV minimum open-loop gain ensure robust performance in high-precision closed-loop configurations.
It achieves >110 dB common-mode rejection and <1.8 mV/V power supply rejection across ±4.5 V to ±18 V supplies, enabling accurate operation in noisy industrial or mixed-signal environments. The device conforms to industry-standard 14-lead DIP pinout and is pin-compatible with LM148/149, HA4741, HA5104, and RM4156 - supporting drop-in upgrades in legacy quad op amp designs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Voltage Noise Density | 3.2–5.0 nV/√Hz @ 1 kHz - enables sub-μV-level signal amplification in strain gauge or sensor front-ends without dominating total input-referred noise. |
| Input Offset Voltage | 0.4 mV max - ensures ≤0.04% gain error in 10 V full-scale instrumentation amplifier stages without trimming. |
| Gain-Bandwidth Product | 6 MHz - supports stable unity-gain buffers and closed-loop gains up to 100 at ≥60 kHz bandwidth. |
| Slew Rate | 2 V/ms - limits large-signal settling to ≤6 ms for 0.01% accuracy, suitable for DC-coupled data acquisition but not video-rate signals. |
| Common-Mode Rejection | 110 dB min - rejects >100,000:1 of ground-bounce or shared-supply noise in differential sensor interfaces. |
| Supply Current (all amps) | 9–11 mA - consumes half the power of four discrete OP27s, critical for thermally constrained multi-channel systems. |
| Input Bias Current | 25 nA max - allows use with source impedances up to ~10 kΩ before introducing >0.25 mV offset error. |
Pinout & Package
OP470GSZ is supplied in a 14-lead plastic dual-in-line package (PDIP), compliant with JEDEC MO-095-AB, with 0.300-inch body width and 0.100-inch lead pitch. Pin 1 is marked by a notch or dot; leads are tin-lead plated for standard soldering.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT A | Amplifier A output - drives external load or feedback network; capable of ±13 V swing into ≥2 kΩ. |
| 2 | –IN A | Inverting input of Amp A - high-impedance node (11 GΩ common-mode RIN) sensitive to PCB leakage and guarding. |
| 3 | +IN A | Non-inverting input of Amp A - matched to Pin 2 for CMR; requires symmetrical trace routing for best rejection. |
| 4 | V+ | Positive supply rail - must be bypassed with ≥10 μF tantalum + 0.1 μF ceramic near pin for stability with capacitive loads. |
| 5 | +IN B | Non-inverting input of Amp B - electrically isolated from other inputs; shares same die substrate as all amps. |
| 6 | –IN B | Inverting input of Amp B - identical electrical characteristics to Pin 2; used for matched dual-differential stages. |
| 7 | OUT B | Amplifier B output - fully independent output stage; channel separation >125 dB prevents crosstalk in multi-channel filters. |
| 8 | OUT D | Amplifier D output - occupies same physical location as Pin 1 in standard quad DIP layout; enables compact PCB layout. |
| 9 | –IN D | Inverting input of Amp D - matches Pin 2/6 within 0.1 mV offset and 0.5 μV/°C drift for precision quad buffering. |
| 10 | +IN D | Non-inverting input of Amp D - used in digital panning circuits where complementary gain control is required across four channels. |
| 11 | V– | Negative supply rail - referenced to system ground; must be decoupled identically to Pin 4 to maintain PSRR >100 dB. |
| 12 | +IN C | Non-inverting input of Amp C - supports independent biasing; used in squelch amplifier threshold detection (Figure 17). |
| 13 | –IN C | Inverting input of Amp C - configured as comparator in squelch circuits; internal hysteresis not provided - external feedback required. |
| 14 | OUT C | Amplifier C output - drives FET gate in squelch applications; output swing limited to ±13 V but rated for continuous short-circuit. |
Key Features
| Feature | Design Value |
|---|---|
| Very low voltage noise | 5 nV/√Hz max at 1 kHz - enables resolution of microvolt-level bio-signals or seismic transducer outputs without pre-amplifier staging. |
| Quad amplifier matching | Offset drift <2 μV/°C and gain match <0.1% - eliminates calibration drift in 4-channel instrumentation amplifiers and active filter banks. |
| Industry-standard pinout | 14-pin DIP layout compatible with LM148/HA4741 - allows direct replacement in existing PCBs without layout revision. |
| High open-loop gain | 1000 V/mV min into 10 kΩ - ensures <0.001% gain error in 100× non-inverting configurations even with 10 kΩ feedback networks. |
| Unity-gain stability | Stable with AV = 1 and ≥1000 pF capacitive load - simplifies design of low-impedance drivers for ADC input buffers or cable drivers. |
Applications
| Low-Noise Instrumentation Amplifier | Digital Audio Panning Control |
|---|---|
Use Scenario: Amplifying millivolt-level outputs from strain gauges or thermocouples in weigh scales and pressure sensors. IC Role / Device Role / Timing Role: Quad buffer and gain stage - two amps form precision diff-amp front-end, two provide matched output buffering. Use Value: 5 nV/√Hz noise floor preserves SNR in 24-bit DAQ systems; 0.4 mV VOS avoids zero-point calibration in factory-set industrial sensors. |
Use Scenario: Controlling left/right audio channel balance using DAC-controlled current-to-voltage conversion in pro-audio mixers. IC Role / Device Role / Timing Role: Quad current-to-voltage converter - each amp converts complementary DAC currents into analog voltages with matched gain. Use Value: Channel matching <0.01% THD ensures distortion-free panning; 110 dB CMR rejects digital switching noise coupling from DAC bus. |
| Squelch Amplifier for RF Receivers | Five-Band Stereo Graphic Equalizer |
Use Scenario: Muting audio output when received RF signal strength falls below threshold in amateur radio transceivers. IC Role / Device Role / Timing Role: Triple-function circuit - one amp as peak detector, one as comparator, one as gated inverting amplifier. Use Value: Single-package integration reduces board space vs. discrete solutions; 2 V/ms slew rate enables <10 ms mute/unmute response. |
Use Scenario: Implementing 15 dB boost/cut per band in high-fidelity home audio equalizers with >100 dB SNR. IC Role / Device Role / Timing Role: Quad active filter core - each amp implements one band's biquad topology with matched Q and center frequency. Use Value: Low 1/f noise corner (<5 Hz) prevents audible hiss in bass bands; 6 MHz GBW supports clean 20 kHz passband with minimal phase shift. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OP470GP | Same silicon, plastic DIP package with 1000 μV VOS max (vs. 400 μV for GSZ); wider temp range (–40°C to +85°C). | Acceptable in cost-sensitive industrial controls where 0.1% gain error is tolerable; not suitable for precision lab equipment. | Select OP470GP only if VOS spec relaxation and extended temperature rating outweigh need for lowest noise floor. |
| OP400GP | Lower current noise (0.2 pA/√Hz), higher VOS (1.5 mV), slower GBW (0.3 MHz), and lower slew rate (0.15 V/ms). | Better for high-source-impedance sensors (>20 kΩ) like piezoelectric accelerometers; unsuitable for wideband active filters or fast settling. | Choose OP400GP when total input-referred noise is dominated by current noise - e.g., photodiode transimpedance stages with >100 kΩ feedback. |
Compared with OP470GP, OP470GSZ offers tighter offset and lower noise for metrology-grade signal chains; versus OP400GP, it trades higher current noise for 20× greater bandwidth and 13× faster slew - making it optimal for multi-channel, wideband, low-Z sensor interfaces.
Availability
OP470GSZ is available at Aetrix Electronics and suitable for precision instrumentation, audio signal processing, and industrial sensor conditioning requiring stable component supply across long-lifecycle OEM programs.
Supply support for OP470GSZ 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, serving industrial, communications, automotive, and healthcare markets.
The OP470 product line was engineered specifically for ultra-low-noise, high-accuracy analog signal conditioning in multi-channel test equipment, medical instrumentation, and professional audio - prioritizing voltage noise, offset matching, and thermal stability over speed.
FAQ
What is the maximum operating temperature range for OP470GSZ?
The OP470GSZ is rated for operation from –40°C to +85°C, matching the OP470G grade specification. This industrial temperature range ensures reliable performance in factory automation controllers, outdoor sensor nodes, and commercial audio equipment without derating. The device maintains its 5 nV/√Hz noise density and 110 dB CMR across this full span, as verified in the OP470G electrical characteristics table on page 4 of the datasheet.
Does OP470GSZ require external compensation for unity-gain stability?
No, OP470GSZ is internally compensated for unity-gain stability and does not require external compensation components. It remains stable driving ≥1000 pF capacitive loads in unity-gain buffer configurations, as confirmed in the "Capacitive Load Driving" section (page 12) and TPC 21 (Small-Signal Overshoot vs. Capacitive Load). However, proper supply bypassing (≥10 μF + 0.1 μF per rail) is mandatory to maintain phase margin above 58°.
Can OP470GSZ replace LM148 in an existing design without modifications?
Yes, OP470GSZ is pin-compatible with LM148 and uses the identical 14-lead DIP footprint and pinout. It improves upon LM148 with 5× lower voltage noise (5 nV/√Hz vs. 25 nV/√Hz), 10× better CMR (110 dB vs. 90 dB), and 2× higher gain-bandwidth (6 MHz vs. 3 MHz), while maintaining the same supply current (9–11 mA). No PCB changes are required for drop-in replacement in most applications.
What is the typical input bias current of OP470GSZ at 25°C?
The typical input bias current of OP470GSZ at 25°C is 15 nA, with a maximum of 25 nA across the full industrial temperature range (–40°C to +85°C). This value is specified in the OP470G column of the "ELECTRICAL CHARACTERISTICS" table on page 4. At elevated temperatures (e.g., +85°C), bias current rises to ≤60 nA, which must be accounted for when interfacing with high-impedance sources (>100 kΩ).
Is OP470GSZ suitable for driving ADC inputs in a 16-bit data acquisition system?
Yes, OP470GSZ is well-suited for driving 16-bit ADC inputs due to its low 0.4 mV max input offset voltage (≤0.006% of 65.5 V full-scale), 5 nV/√Hz noise (contributing <1 LSB RMS noise in 100 kHz bandwidth), and ±13 V output swing into 2 kΩ - sufficient to drive SAR and sigma-delta ADC reference and input buffers. Its 6 MHz GBW ensures settling to 0.001% in <1 μs for step inputs, meeting timing requirements of 1 MSPS converters.
OP470GSZ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 16-SOIC (0.295", 7.50mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 4
- Output Type:
- -
- Slew Rate:
- 3V/µs
- Gain Bandwidth Product:
- 6 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 15 nA
- Voltage - Input Offset:
- 400 µV
- Current - Supply:
- 9mA
- Current - Output / Channel:
- -
- Voltage - Supply Span (Min):
- 9 V
- Voltage - Supply Span (Max):
- 36 V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SOIC
OP470GSZ FAQ
1.How can I place an order for OP470GSZ through Aetrix?
Please submit a Request for Quotation (RFQ) for OP470GSZ 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 OP470GSZ reliable?
The price and inventory of OP470GSZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OP470GSZ is usually 5 days.
3.What payment methods are accepted for OP470GSZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OP470GSZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OP470GSZ?
OP470GSZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OP470GSZ 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 OP470GSZ?
For technical support, including OP470GSZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OP470GSZ requirements.
6.How does Aetrix verify that OP470GSZ is sourced from the original manufacturer or authorized distributors?
All OP470GSZ 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 OP470GSZ meets industry standards.
7.What is the process for return or replacement of OP470GSZ?
All OP470GSZ units undergo pre-shipment inspection (PSI). If there is an issue with OP470GSZ, 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 OP470GSZ part is unused and in its original packaging.
Return procedure for OP470GSZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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