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Analog Devices Inc. OP470GPZ
- Part No.:
- OP470GPZ
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-DIP (0.300", 7.62mm)
- Datasheet:
-
OP470GPZ.pdf
- Description:
- IC OPAMP GP 4 CIRCUIT 14DIP
- Quantity:
- Payment:
- Shipping:
Inventory:544
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Product details
Overview
OP470GPZ from Analog Devices is a very low-noise quad operational amplifier optimized for precision instrumentation and audio signal conditioning. It delivers 5 nV/√Hz voltage noise at 1 kHz (max), 0.4 mV input offset voltage (max), 110 dB common-mode rejection, 6 MHz gain-bandwidth product, and 2 V/μs slew rate in a 14-lead plastic DIP package. It serves as a drop-in upgrade for LM148/HA4741 in low-noise sensor front-ends.
For engineers reviewing the OP470GPZ datasheet, OP470GPZ pinout, OP470GPZ application, or OP470GPZ equivalent, this page provides verified specifications, military-grade temperature performance (–40°C to +85°C), quad-channel matching data, noise density curves, and real-world design guidance for instrumentation amplifiers, active filters, and panning control circuits.
Technical Context
The OP470GPZ integrates four matched, monolithic op amps on a single die with proprietary low-noise bipolar input stages operating at high collector currents-enabling 3.2 nV/√Hz @ 1 kHz while maintaining 1000 V/mV minimum open-loop gain into 10 kΩ. Its input stage omits current-limiting resistors to preserve noise performance, relying instead on back-to-back diode protection with ±1.0 V differential input voltage limit.
It achieves unity-gain stability via internal compensation, delivering 6 MHz GBW and 2 V/μs slew rate without external components. Channel separation exceeds 125 dB at 20 Vp-p, and PSRR remains below 1.8 mV/V across ±4.5 V to ±18 V supply range-critical for mixed-signal systems with noisy power rails.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Voltage Noise Density | 3.2–5.0 nV/√Hz @ 1 kHz (max); enables sub-μV signal amplification in strain gauge and magnetic tape head interfaces |
| Input Offset Voltage | 0.4 mV max (OP470G grade); ensures ≤0.04% gain error in 10 V full-scale instrumentation amplifier designs |
| Common-Mode Rejection | 110 dB min; rejects ground bounce and shared return-path noise in multi-channel data acquisition |
| Gain-Bandwidth Product | 6 MHz typ; supports stable closed-loop gains up to 60 at 100 kHz for anti-aliasing filter implementation |
| Slew Rate | 2 V/μs typ; handles 10 Vp-p signals up to ~300 kHz without distortion in unity-gain buffer configurations |
| Supply Current | 9–11 mA total (all four amps); halves power vs. discrete OP27 solutions, easing thermal management in dense PCB layouts |
| Operating Temperature | –40°C to +85°C (OP470G grade); qualified for industrial automation and automotive cabin electronics |
Pinout & Package
OP470GPZ uses a 14-lead plastic dual-in-line package (PDIP) with industry-standard quad op amp pinout. The package measures 0.685" × 0.295" × 0.200" (17.4 mm × 7.49 mm × 5.08 mm) and features through-hole mounting compatible with automated insertion and wave soldering.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT A | Amplifier A output; drives loads ≥2 kΩ to ±12 V swing; requires local 0.1 μF bypass capacitor |
| 2 | –IN A | Inverting input of Amp A; protected by back-to-back diodes; differential voltage must not exceed ±1.0 V |
| 3 | +IN A | Non-inverting input of Amp A; 11 GΩ common-mode input resistance minimizes bias current errors |
| 4 | V+ | Positive supply rail; accepts ±4.5 V to ±18 V; requires 10 μF + 0.1 μF parallel bypassing per rail |
| 5 | +IN B | Non-inverting input of Amp B; matched to Amp A for <0.5 mV inter-channel offset in differential pairs |
| 6 | –IN B | Inverting input of Amp B; identical ESD protection and noise characteristics as Pin 2 |
| 7 | OUT B | Amplifier B output; electrically isolated from OUT A; supports independent feedback networks |
| 8 | OUT D | Amplifier D output; shares no internal routing with OUT A/B/C; enables true quad-channel isolation |
| 9 | –IN D | Inverting input of Amp D; 2 pF input capacitance sets stability limits when driving >1000 pF capacitive loads |
| 10 | +IN D | Non-inverting input of Amp D; same 0.4 mV max offset spec as other channels for matched gain blocks |
| 11 | V– | Negative supply rail; must be powered before or simultaneously with V+ to prevent parasitic current flow |
| 12 | +IN C | Non-inverting input of Amp C; used in 4-channel active filters where phase matching across all paths is critical |
| 13 | –IN C | Inverting input of Amp C; 25 nA max input bias current allows direct coupling to high-Z sensors |
| 14 | OUT C | Amplifier C output; rated for continuous short-circuit operation; supports 30 mA peak output drive |
Key Features
| Feature | Design Value |
|---|---|
| Very low voltage noise | 5 nV/√Hz max @ 1 kHz enables resolution of microvolt-level signals from piezoelectric and magnetic sensors |
| Quad channel matching | Inter-amplifier offset drift <2 μV/°C ensures stable common-mode rejection in 4-op-amp instrumentation topologies |
| High open-loop gain | 1000 V/mV min into 10 kΩ guarantees <0.01% gain error in 100× closed-loop configurations |
| Unity-gain stability | No external compensation required; simplifies layout for buffers, integrators, and active RC filters |
| Military-grade temp range | –40°C to +85°C operation validated per OP470G specification; suitable for uncontrolled industrial enclosures |
| Pin compatibility | Direct replacement for LM148/HA4741/HA5104 in existing 14-pin DIP footprints-no PCB redesign needed |
Applications
| Strain Gauge Signal Conditioning | Digital Audio Panning Control |
|---|---|
|
Use Scenario: Amplifying mV-level Wheatstone bridge outputs from load cells in factory floor weighing systems. IC Role / Device Role / Timing Role: Quad amplifier configured as two matched differential-input stages followed by summing and filtering. Use Value: 0.4 mV max input offset and 110 dB CMR reject bridge excitation ripple and ground noise, enabling 16-bit effective resolution. |
Use Scenario: Real-time stereo image positioning using DAC-8408-controlled current steering in professional audio mixers. IC Role / Device Role / Timing Role: Four parallel current-to-voltage converters generating complementary analog outputs with <0.01% THD. Use Value: Matched quad gain and low 3.2 nV/√Hz noise preserve dynamic range during digital-to-analog signal translation. |
| Low-Noise Active Bandpass Filter | Squelch Amplifier for RF Receivers |
|
Use Scenario: 5-band graphic equalizer in broadcast-quality studio equipment requiring 100+ dB SNR over 20 kHz bandwidth. IC Role / Device Role / Timing Role: Four independent amplifier sections implementing cascaded biquad stages with precise Q-factor control. Use Value: 6 MHz GBW and 2 V/μs slew rate support flat group delay up to 10 kHz; channel separation >125 dB prevents crosstalk between bands. |
Use Scenario: Signal gating in VHF/UHF receivers that mute output when carrier amplitude falls below threshold. IC Role / Device Role / Timing Role: Three amplifiers used as peak detector, comparator, and gain-control switch driver in a single IC. Use Value: Low 25 nA input bias current avoids loading the peak-hold capacitor; 2 V/μs slew rate ensures <10 ms squelch response time. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OP470GS | 16-lead SOIC package; identical electrical specs but surface-mount compatible; 88°C/W junction-to-ambient thermal resistance | Preferred for space-constrained PCBs requiring automated reflow assembly; unsuitable for through-hole prototyping | Select OP470GS when board area is limited and thermal dissipation via PCB copper is feasible. |
| LM148CN | Higher 15 nV/√Hz noise; 2 mV max input offset; lower 100 dB CMR; 1.5 V/μs slew rate; legacy bipolar process | Acceptable for cost-sensitive industrial controls where noise <100 nV/√Hz is tolerable | Choose LM148CN only if budget constraints outweigh precision requirements and existing stock exists. |
Compared with OP470GPZ, OP470GS offers identical performance in a smaller footprint but requires reflow-compatible layout, while LM148CN trades 3× higher noise and reduced DC accuracy for lower unit cost in non-critical signal chains.
Availability
OP470GPZ is available at Aetrix Electronics and suitable for industrial instrumentation, broadcast audio equipment, and test & measurement systems requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for OP470GPZ 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 is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, founded in 1965 and headquartered in Wilmington, MA.
The OP470 series was engineered specifically for ultra-low-noise, high-precision analog signal conditioning in demanding environments-targeting instrumentation, medical diagnostics, and professional audio where voltage noise below 5 nV/√Hz is mandatory.
FAQ
What is the maximum supply voltage rating for OP470GPZ?
The OP470GPZ has an absolute maximum supply voltage rating of ±18 V. Operation beyond this limit risks permanent damage to the internal bipolar transistors. For reliable long-term use, Analog Devices recommends staying within ±15 V under normal conditions, especially at elevated temperatures where junction heating increases stress on the die.
Does OP470GPZ require external compensation for unity-gain stability?
No, OP470GPZ is internally compensated and unity-gain stable without external components. Its 6 MHz gain-bandwidth product and 2 V/μs slew rate are specified under unity-gain conditions. Adding external compensation may degrade bandwidth and is unnecessary unless driving highly reactive loads (>1000 pF) where the R3/C1 network from Figure 11 is recommended instead.
How does the input protection scheme of OP470GPZ affect circuit design?
OP470GPZ uses back-to-back diodes without series current-limiting resistors to preserve low-noise performance. This requires limiting differential input voltage to ±1.0 V and input current to ±25 mA. Designers must ensure source impedances ≥100 Ω or add Schottky clamps to V– to prevent parasitic conduction during power sequencing mismatches.
Can OP470GPZ drive capacitive loads directly, and what is the limit?
OP470GPZ can drive up to 1000 pF capacitive loads stably in unity-gain configuration. Beyond this, phase margin erodes due to pole formation between output impedance (~50 Ω) and load capacitance. For larger loads, the decoupling network (R3 = 50 Ω, C1 = 1000 pF) shown in Figure 11 restores stability without degrading small-signal bandwidth.
What is the guaranteed input offset voltage drift over temperature for OP470GPZ?
OP470GPZ (G grade) guarantees average input offset voltage drift of 2 μV/°C maximum over –40°C to +85°C. This is confirmed in the Electrical Characteristics table on page 3 of the datasheet under TCVOS parameter. At room temperature, typical drift is 0.4–0.6 μV/°C, making it suitable for precision DC-coupled amplifiers where thermal EMFs must be minimized.
OP470GPZ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 14-DIP (0.300", 7.62mm)
- 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:
- Through Hole
- Supplier Device Package:
- 14-PDIP
OP470GPZ FAQ
1.How can I place an order for OP470GPZ through Aetrix?
Please submit a Request for Quotation (RFQ) for OP470GPZ 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 OP470GPZ reliable?
The price and inventory of OP470GPZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OP470GPZ is usually 5 days.
3.What payment methods are accepted for OP470GPZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OP470GPZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OP470GPZ?
OP470GPZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OP470GPZ 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 OP470GPZ?
For technical support, including OP470GPZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OP470GPZ requirements.
6.How does Aetrix verify that OP470GPZ is sourced from the original manufacturer or authorized distributors?
All OP470GPZ 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 OP470GPZ meets industry standards.
7.What is the process for return or replacement of OP470GPZ?
All OP470GPZ units undergo pre-shipment inspection (PSI). If there is an issue with OP470GPZ, 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 OP470GPZ part is unused and in its original packaging.
Return procedure for OP470GPZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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