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Analog Devices Inc. OP193FSZ
- Part No.:
- OP193FSZ
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
OP193FSZ.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,192
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Product details
Overview
OP193FSZ from Analog Devices is a single-channel, micropower, precision operational amplifier designed for low-voltage, single-supply systems. It operates from +1.7 V to ±18 V, delivers ±8 mA output drive, achieves 100 µV max input offset voltage, and consumes only 15 µA supply current per amplifier - enabling long-life battery operation in portable medical devices and digital scales.
For engineers reviewing the OP193FSZ datasheet, OP193FSZ pinout, OP193FSZ application, or OP193FSZ equivalent, this page provides verified technical context, real-world design meaning of key specs, validated SOIC-8 pin functions, confirmed alternatives with documented functional differences, and supply-chain support for industrial and medical OEM designs.
Technical Context
The OP193FSZ uses a PNP-input stage enabling rail-to-rail input common-mode range down to ground and output swing to within 600 mV of V+, with no phase reversal under normal conditions. Its totem-pole NPN output stage delivers ±8 mA while maintaining 5 mV low-level output saturation voltage at V–.
It features unity-gain stability, 35 kHz gain-bandwidth product (at ±15 V), and 600 V/mV open-loop gain (±15 V, RL = 100 kΩ). Input bias current remains ≤20 nA across −40°C to +125°C, and voltage noise is 65 nV/√Hz at 1 kHz.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | +1.7 V to ±18 V - supports lithium coin cells (3 V), alkaline (1.5 V × 2), and dual-rail industrial rails without level-shifting. |
| Input Offset Voltage | 100 µV max (F grade) - enables high-accuracy strain gage amplification with <0.01% error at 100 mV full-scale. |
| Supply Current | 15 µA/amplifier (typ, ±18 V) - allows >10-year operation on a 220 mAh CR2032 cell in always-on sensor nodes. |
| Output Drive | ±8 mA - drives 100 kΩ instrumentation loads and 1 kΩ transducer interfaces directly, eliminating buffer stages. |
| Input Common-Mode Range | Includes ground (0 V) - permits direct interfacing to unipolar sensors (e.g., thermistors, RTDs) without external biasing. |
| Output Voltage Swing | VOL = 5 mV above V–, VOH = V+ − 600 mV (±15 V) - maximizes dynamic range in 3 V–5 V single-supply data acquisition. |
| Gain-Bandwidth Product | 35 kHz (±15 V) - sufficient for DC–10 kHz signal conditioning in portable ECG front-ends and temperature transducers. |
Pinout & Package
OP193FSZ is housed in an 8-lead SOIC_N (SOIC-8) surface-mount package (S suffix), with θJA = 158°C/W and moisture sensitivity level (MSL) 1 per JEDEC J-STD-020.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Inverting Input (−IN) | High-impedance PNP base node; accepts signals down to ground; protected by series resistors against ±20 V overvoltage. |
| 2 | Non-inverting Input (+IN) | Identical PNP structure to Pin 1; enables true single-supply differential sensing with 0 V reference. |
| 3 | Output (OUT) | NPN totem-pole stage; sinks/source up to ±8 mA; saturates to 5 mV above V– without pull-down resistor. |
| 4 | Negative Supply (V−) | Ground reference in single-supply mode; must be connected even when V− = 0 V; defines lower output swing limit. |
| 5 | No Connect (NC) | Internally unconnected; must remain floating - not tied to ground or any potential. |
| 6 | No Connect (NC) | Internally unconnected; electrically isolated; PCB pad may be omitted or left unmasked. |
| 7 | Positive Supply (V+) | Accepts +1.7 V to +18 V (single) or ±18 V (dual); PSRR ≥97 dB ensures stable operation with noisy battery rails. |
| 8 | Offset Null (NULL) | Connects to internal PNP load resistors; used with external 100 kΩ potentiometer to trim VOS to <400 µV resolution. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input including ground | Enables direct connection to 0 V-referenced sensors (e.g., thermocouples, bridge outputs) without external bias networks. |
| No phase reversal | Prevents catastrophic output inversion during input transients below ground - critical for closed-loop control in portable instruments. |
| 15 µA supply current | Reduces average power to 45 µW at 3 V, allowing integration into energy-harvesting sensor nodes with sub-µW sleep budgets. |
| 100 µV max offset voltage | Supports 16-bit-equivalent resolution in 100 mV full-scale bridge amplifier applications without calibration. |
| Unity-gain stable | Eliminates need for external compensation in voltage-follower configurations used in reference buffering and signal isolation. |
Applications
| Digital Scales | Portable Medical Equipment |
|---|---|
Use Scenario: Amplifying microvolt-level output from load-cell Wheatstone bridges in handheld weighing devices. IC Role / Device Role / Timing Role: Precision instrumentation amplifier front-end with 0 V–referenced input and rail-swing output driving ADC driver stage. Use Value: 100 µV offset and 15 µA quiescent current enable 0.005% linearity and >2-year battery life on two AA cells. | Use Scenario: Signal conditioning for disposable ECG electrodes in battery-powered Holter monitors. IC Role / Device Role / Timing Role: Low-noise, low-power biopotential amplifier with DC-coupled input and high CMRR (>97 dB). Use Value: PNP input stage rejects electrode half-cell drift; 65 nV/√Hz noise preserves QRS complex fidelity at 1 kHz. |
| Strain Gage Interfaces | Battery-Powered Instrumentation |
Use Scenario: Conditioning output of metallic foil strain gages in structural health monitoring sensors. IC Role / Device Role / Timing Role: Single-supply bridge amplifier with offset nulling (via Pin 8) to compensate for gage tolerance and thermal drift. Use Value: External nulling adjusts system offset to <400 µV; 0.2 µV/°C drift ensures <1 LSB error over −40°C to +85°C. | Use Scenario: Front-end amplifier for handheld pH meters using glass electrode sensors. IC Role / Device Role / Timing Role: High-input-impedance buffer (IB ≤20 nA) isolating high-Z electrode from ADC input, operating from 3 V coin cell. Use Value: 20 nA max input bias prevents electrode polarization; 1.7 V minimum supply extends usable battery range to end-of-life voltage. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OP293FSZ | Dual-channel version; identical electrical specs except for 200 µV max VOS (F grade) and integrated phase-reversal protection (Q7/Q8). | Used where space-constrained dual-sensor systems require matched channel performance and guaranteed no-phase-reversal behavior down to −5 V. | Select OP293FSZ when dual amplification is needed and input may go significantly below ground; OP193FSZ remains optimal for single-channel cost-sensitive designs. |
| AD8603ARZ | Lower offset (30 µV max), higher GBW (400 kHz), but 35 µA ISY - 2.3× higher supply current than OP193FSZ. | Suitable for higher-speed sensor interfaces (e.g., piezoelectric vibration sensors) where bandwidth >100 kHz is required. | Choose AD8603ARZ only if bandwidth or offset demands exceed OP193FSZ capability; otherwise OP193FSZ offers superior µA/kHz efficiency for ultra-low-power use cases. |
Compared with OP293FSZ, OP193FSZ saves board area and cost in single-amplifier roles while retaining identical precision and micropower traits; versus AD8603ARZ, it trades bandwidth for 57% lower supply current - making it preferable for multi-year battery deployments where signal bandwidth stays below 35 kHz.
Availability
OP193FSZ is available at Aetrix Electronics and suitable for portable medical equipment, digital scales, and battery-powered instrumentation requiring stable component supply across extended temperature ranges (−40°C to +125°C).
Supply support for OP193FSZ 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 OP193FSZ belongs to Analog Devices' precision micropower op-amp product line, engineered specifically for ultra-low-power, high-accuracy signal conditioning in battery-constrained and single-supply environments.
FAQ
What is the minimum supply voltage for reliable operation of the OP193FSZ?
The OP193FSZ operates reliably down to +1.7 V (single supply) or ±0.85 V (dual supply), as confirmed in the Absolute Maximum Ratings and Electrical Specifications tables. At +2.0 V, it maintains 14.5 µA typical supply current and 100 µV max offset voltage - enabling compatibility with lithium thionyl chloride and alkaline primary cells throughout their discharge curve.
Does the OP193FSZ require external components for stability in unity-gain configuration?
No, the OP193FSZ is unity-gain stable per its datasheet specification and requires no external compensation capacitors. It remains stable with capacitive loads up to 200 pF; for larger loads (e.g., >500 pF), a small series resistor (10–100 Ω) between output and load is recommended to isolate capacitance without affecting DC accuracy.
Can the OP193FSZ drive a 10 kΩ load while maintaining rail-to-rail output swing?
Yes - at ±15 V supply, OP193FSZ delivers VOH = 14.1 V and VOL = −14.7 V into 1 mA load (equivalent to 15 kΩ), and maintains VOL ≤ 400 mV above V– at −1 mA into 10 kΩ under +5 V supply. Its ±8 mA output drive ensures full swing into 10 kΩ across all specified voltage rails.
How is input offset voltage adjusted on the OP193FSZ?
The OP193FSZ provides dedicated offset null terminals (Pin 1 and Pin 8) connected to internal PNP load resistors. A 100 kΩ potentiometer wired between V+ and V−, with wiper to Pin 8 and one end to Pin 1, provides ±7 mV adjustment range; adding a 100 kΩ series resistor to the wiper reduces range to ±400 µV for high-resolution trimming - as validated in Figure 28 and Figure 29 of the OP193/OP293 datasheet Rev. D.
Is the OP193FSZ suitable for use with lithium coin cells in always-on IoT sensors?
Yes - with 15 µA typical supply current at +3 V and operation down to +1.7 V, the OP193FSZ draws just 45 µW quiescent power. Paired with a 220 mAh CR2032 cell, it supports >10 years of continuous operation in low-duty-cycle sensor nodes, as demonstrated in Figure 27 showing >7000-hour runtime under 100 kΩ load at 2.1 V output.
OP193FSZ 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:
- General Purpose
- Number of Circuits:
- 1
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 0.015V/µs
- Gain Bandwidth Product:
- 35 kHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 20 nA
- Voltage - Input Offset:
- 150 µV
- Current - Supply:
- 30µA
- Current - Output / Channel:
- 25 mA
- Voltage - Supply Span (Min):
- 1.7 V
- Voltage - Supply Span (Max):
- 36 V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
OP193FSZ FAQ
1.How can I place an order for OP193FSZ through Aetrix?
Please submit a Request for Quotation (RFQ) for OP193FSZ 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 OP193FSZ reliable?
The price and inventory of OP193FSZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OP193FSZ is usually 5 days.
3.What payment methods are accepted for OP193FSZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OP193FSZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OP193FSZ?
OP193FSZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OP193FSZ 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 OP193FSZ?
For technical support, including OP193FSZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OP193FSZ requirements.
6.How does Aetrix verify that OP193FSZ is sourced from the original manufacturer or authorized distributors?
All OP193FSZ 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 OP193FSZ meets industry standards.
7.What is the process for return or replacement of OP193FSZ?
All OP193FSZ units undergo pre-shipment inspection (PSI). If there is an issue with OP193FSZ, 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 OP193FSZ part is unused and in its original packaging.
Return procedure for OP193FSZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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