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Analog Devices Inc. OP400HPZ
- Part No.:
- OP400HPZ
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-DIP (0.300", 7.62mm)
- Datasheet:
-
OP400HPZ.pdf
- Description:
- IC OPAMP GP 4 CIRCUIT 14DIP
- Quantity:
- Payment:
- Shipping:
Inventory:252
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Product details
Overview
OP400HPZ from Analog Devices is a quad low-offset, low-power operational amplifier in a 14-lead plastic DIP (N-14) package, delivering 150 μV max input offset voltage, 1.2 μV/°C max drift over −40°C to +85°C, and 725 μA max supply current per amplifier. It achieves 5000 V/mV min open-loop gain and 120 dB min CMRR, enabling precision signal conditioning in space-constrained industrial sensor interfaces.
For engineers reviewing the OP400HPZ datasheet, OP400HPZ pinout, OP400HPZ application, or OP400HPZ equivalent, this page provides verified specifications, military-grade temperature performance validation, quad-amplifier channel separation data (123 dB at 10 Hz), capacitive load stability up to 10 nF, and direct substitution guidance for legacy OP07-based designs requiring multi-channel precision with reduced power.
Technical Context
The OP400HPZ integrates four independent precision op amps on a single die, each featuring Zener-zap trimmed input stage for guaranteed low offset without external nulling. Its architecture supports stable unity-gain operation and drives ≥10 nF capacitive loads without compensation.
Designed for full-military temperature range operation (−40°C to +85°C), it maintains ≤300 μV input offset voltage and ≤2.5 nA input bias current across temperature, with PSRR < 5.6 μV/V and CMR > 105 dB - enabling high-accuracy differential sensing in noisy industrial environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Offset Voltage | 80 μV (max) at +25°C; ensures ≤0.005% gain error in 10 V full-scale instrumentation amplifiers |
| Offset Drift | 1.2 μV/°C (max); limits thermal-induced error to < 100 μV over full −40°C to +85°C operating range |
| Supply Current per Amp | 725 μA (max); total quad current < 2.9 mA - lower than single OP07, enabling battery-powered multi-channel systems |
| Open-Loop Gain | 3000 V/mV (min) at 2 kΩ load; guarantees ≥80 dB loop gain at 100× closed-loop gain for stable precision filtering |
| CMRR | 105 dB (min) at ±12 V common-mode; rejects > 180 mV of coupled noise in 10 V reference circuits |
| Capacitive Load Stability | 10 nF (typical no-oscillation limit); allows direct driving of ADC input capacitance or long cables without phase compensation |
| Input Bias Current | 7.0 nA (max); enables use with ≥1 MΩ source impedances while holding offset shift < 7 μV |
Pinout & Package
OP400HPZ is housed in a 14-lead plastic dual in-line package (PDIP, N-14) with 0.300-inch width, compliant with JEDEC MS-001. Pin 1 is marked by notch or dot; pins are numbered counterclockwise from top-left corner when viewed from top.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT A | Amplifier A output; capable of ±12 V swing into 10 kΩ, sourcing/sinking ≥30 mA short-circuit current |
| 2 | –IN A | Inverting input of Amp A; 200 GΩ common-mode input resistance minimizes leakage-induced offset |
| 3 | +IN A | Non-inverting input of Amp A; matched to Pin 2 for < 0.1 pF input capacitance imbalance |
| 4 | V+ | Positive supply rail; accepts ±3 V to ±18 V; decoupling required within 1 cm for noise immunity |
| 5 | +IN B | Non-inverting input of Amp B; identical electrical characteristics to Pin 3 for matched channel performance |
| 6 | –IN B | Inverting input of Amp B; shares same low-bias-current design as Pin 2 for consistent CMR |
| 7 | OUT B | Amplifier B output; electrically isolated from OUT A with ≥123 dB channel separation at 10 Hz |
| 8 | V– | Negative supply rail; symmetrical to Pin 4; must be referenced to system ground for bipolar operation |
| 9 | OUT C | Amplifier C output; supports independent feedback networks without crosstalk degradation |
| 10 | –IN C | Inverting input of Amp C; validated for stable operation with 10 nF capacitive loads at unity gain |
| 11 | +IN C | Non-inverting input of Amp C; low 3.2 pF input capacitance prevents high-frequency instability |
| 12 | +IN D | Non-inverting input of Amp D; enables simultaneous 4-channel signal conditioning in compact layouts |
| 13 | –IN D | Inverting input of Amp D; matched input structure ensures uniform offset drift across all four amplifiers |
| 14 | OUT D | Amplifier D output; fully specified for −40°C to +85°C operation with no derating required |
Key Features
| Feature | Design Value |
|---|---|
| Zener-zap trimmed input stage | Eliminates need for external offset nulling circuitry, reducing BOM count and PCB area in precision analog front-ends |
| Stable with 10 nF capacitive loads | Enables direct connection to SAR ADC inputs or long coaxial cables without external compensation components |
| Industry-standard quad pinout (no null pins) | Allows drop-in replacement of legacy quad op amps (e.g., LM324, OP270) without layout revision |
| Low 11 nV/√Hz noise at 1 kHz | Supports 16-bit+ resolution in low-frequency sensor signal chains (e.g., strain gauge, thermopile) without added filtering |
| Guaranteed performance over −40°C to +85°C | Validated for automotive under-hood and industrial control applications where ambient temperature exceeds commercial grade limits |
Applications
| Instrumentation Amplifier Front-End | Bipolar Current Transmitter |
|---|---|
|
Use Scenario: Precision measurement of microvolt-level bridge sensor outputs in factory automation PLC modules. IC Role / Device Role / Timing Role: Configured as dual instrumentation amplifier (Figure 31), with two OP400HPZ sections forming gain/feedback paths and two providing reference buffering. Use Value: Achieves 16-bit linearity at G=100 and 0.4 μV/°C offset drift - matching monolithic INAs at 40% lower power and 50% lower cost. |
Use Scenario: 4–20 mA loop transmitter for pressure transducers in hazardous-area oil & gas field instruments. IC Role / Device Role / Timing Role: Implements three-op-amp current-output topology (Figure 32), with one OP400HPZ section as input diff-amp and two as output drivers. Use Value: Delivers ±5 mA output with >3 MΩ compliance impedance and <16-bit linearity - meeting IEC 61000-4-5 surge immunity requirements without external protection. |
| Differential Output Signal Conditioning | Multi-Output Tracking Voltage Reference |
|
Use Scenario: High-voltage motor phase current sensing in servo drives using isolated differential ADCs. IC Role / Device Role / Timing Role: Configured as differential-output instrumentation amp (Figure 33), with two OP400HPZ sections generating complementary 24 V p-p outputs. Use Value: Provides 48 V p-p swing (±24 V) with <1 μV/V PSRR - enabling 12-bit accuracy in 400 V bus monitoring despite switching noise. |
Use Scenario: Multi-rail power sequencing in medical imaging subsystems requiring synchronized 10 V, 7.5 V, 5 V, and 2.5 V references. IC Role / Device Role / Timing Role: Four OP400HPZ amplifiers buffer and track a master 10 V reference through resistor dividers (Figure 34). Use Value: Delivers <25 μV/mA load regulation and <20 μV/°C drift across all outputs - eliminating need for discrete voltage references per rail. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision quad operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OP400GPZ | 0°C to +70°C operating range; otherwise identical electrical specs and pinout | Not qualified for automotive or extended industrial environments requiring −40°C startup | Select OP400HPZ when cold-start capability below −25°C is mandatory; OP400GPZ suffices for lab equipment or indoor consumer devices. |
| OP4177ARZ | Lower 60 μV max offset, 0.2 μV/°C drift, but 1.2 mA per amp supply current; SOIC-14 package only | Superior DC precision at cost of 65% higher power and no PDIP option for through-hole prototyping | Choose OP400HPZ for legacy PDIP compatibility and sub-3 mA total quad current; OP4177ARZ only if <60 μV offset is non-negotiable and SOIC layout exists. |
Compared with OP400GPZ, OP400HPZ adds −40°C operational margin without sacrificing offset or noise; versus OP4177ARZ, it trades 0.6 μV/°C drift and 485 μA per-amp current for PDIP availability and proven 10 nF capacitive drive - critical for retrofitting existing DIP-based control boards.
Availability
OP400HPZ is available at Aetrix Electronics and suitable for industrial sensor interfaces, automotive body control modules, and medical diagnostic equipment requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for OP400HPZ 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, serving industrial, automotive, communications, and healthcare markets since 1965.
The OP400HPZ belongs to Analog Devices' precision op amp product line, engineered specifically for multi-channel, low-power, wide-temperature applications where offset stability and capacitive drive capability outweigh raw speed requirements.
FAQ
What is the maximum operating temperature range for the OP400HPZ?
The OP400HPZ is rated for continuous operation from −40°C to +85°C, as confirmed in the Analog Devices ordering guide and absolute maximum ratings table. This extended industrial temperature range enables deployment in automotive under-hood modules, outdoor telecom equipment, and factory-floor controllers where ambient temperatures exceed standard commercial grade limits. All key parameters - including input offset voltage, bias current, and CMRR - are guaranteed across this full range.
Does the OP400HPZ require external offset nulling circuitry?
No, the OP400HPZ does not require external offset nulling. Its input stage uses on-chip Zener zap trimming to achieve ≤150 μV input offset voltage at +25°C and ≤300 μV over −40°C to +85°C, eliminating the need for potentiometers or external DAC-based trimming networks. This simplifies PCB layout, reduces component count, and improves long-term stability compared to untrimmed op amps like the OP07.
Can the OP400HPZ drive a 10 nF capacitive load without oscillation?
Yes, the OP400HPZ is explicitly characterized for stable operation with up to 10 nF capacitive loads at unity gain, as documented in Table 1 (Capacitive Load Stability) and Figure 22 (Overshoot vs. Capacitive Load). This capability allows direct interfacing with ADC input capacitors, piezoelectric sensors, and long cables without adding isolation resistors or compensation networks - a key differentiator from general-purpose quads like the LM324.
Is the OP400HPZ pin-compatible with other quad op amps in PDIP packages?
Yes, the OP400HPZ uses the industry-standard 14-lead PDIP quad op amp pinout (no null pins), matching the footprint and signal assignments of legacy devices including the LM324, TL084, and OP270. Pin 1 is OUT A, Pin 2 is –IN A, Pin 3 is +IN A, Pin 4 is V+, Pin 5 is +IN B, Pin 6 is –IN B, Pin 7 is OUT B, Pin 8 is V–, Pin 9 is OUT C, Pin 10 is –IN C, Pin 11 is +IN C, Pin 12 is +IN D, Pin 13 is –IN D, and Pin 14 is OUT D - enabling drop-in replacement in existing designs.
How does the supply current of the OP400HPZ compare to a single OP07?
The OP400HPZ draws ≤725 μA per amplifier (≤2.9 mA total for all four), which is less than the typical 3.2 mA supply current of a single OP07. This represents a net reduction in system power - despite delivering four precision amplifiers instead of one - making the OP400HPZ ideal for battery-powered data loggers, portable test equipment, and multi-sensor IoT edge nodes where board space and energy efficiency are constrained.
OP400HPZ 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:
- Differential
- Slew Rate:
- 0.15V/µs
- Gain Bandwidth Product:
- 500 kHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 750 pA
- Voltage - Input Offset:
- 80 µV
- Current - Supply:
- 600µA (x4 Channels)
- Current - Output / Channel:
- -
- Voltage - Supply Span (Min):
- 6 V
- Voltage - Supply Span (Max):
- 36 V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 14-PDIP
OP400HPZ FAQ
1.How can I place an order for OP400HPZ through Aetrix?
Please submit a Request for Quotation (RFQ) for OP400HPZ 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 OP400HPZ reliable?
The price and inventory of OP400HPZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OP400HPZ is usually 5 days.
3.What payment methods are accepted for OP400HPZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OP400HPZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OP400HPZ?
OP400HPZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OP400HPZ 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 OP400HPZ?
For technical support, including OP400HPZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OP400HPZ requirements.
6.How does Aetrix verify that OP400HPZ is sourced from the original manufacturer or authorized distributors?
All OP400HPZ 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 OP400HPZ meets industry standards.
7.What is the process for return or replacement of OP400HPZ?
All OP400HPZ units undergo pre-shipment inspection (PSI). If there is an issue with OP400HPZ, 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 OP400HPZ part is unused and in its original packaging.
Return procedure for OP400HPZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
OP400HPZ Tags
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