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Renesas ISL28230CBZ-T7
- Part No.:
- ISL28230CBZ-T7
- Manufacturer:
- Renesas
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
ISL28230CBZ-T7.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,854
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Product details
Overview
ISL28230CBZ-T7 from Renesas Electronics is a dual micropower, rail-to-rail input/output operational amplifier optimized for precision DC-coupled signal conditioning in low-voltage, battery-powered systems. It delivers 40 µV max input offset voltage, 150 nV/°C max offset drift, 20 µA per amplifier quiescent current, 400 kHz gain-bandwidth, and operates from 1.8 V to 5.5 V single supply - enabling high-accuracy current sensing in handheld medical devices.
For engineers reviewing the ISL28230CBZ-T7 datasheet, ISL28230CBZ-T7 pinout, ISL28230CBZ-T7 application, or ISL28230CBZ-T7 equivalent, this page provides verified package mapping (8-lead SOIC), confirmed rail-to-rail I/O behavior, validated low-noise performance (1.1 µVP-P, 0.01–10 Hz), and real-world design guidance for high-gain sensor front ends and bi-directional current measurement circuits.
Technical Context
The ISL28230CBZ-T7 employs a CMOS input stage with parallel PMOS/NMOS transistors to achieve true rail-to-rail input operation down to 100 mV beyond either supply rail, while maintaining high input impedance even under large differential voltages. Its output stage uses common-source PMOS/NMOS devices capable of sourcing/sinking ±15 mA and swinging within 50 mV of both rails into 10 kΩ.
With 150 dB open-loop gain and 1.1 µVP-P peak-to-peak noise (0.01–10 Hz), the device supports stable high-gain DC amplification - e.g., 10 kV/V configurations with <±400 mV total output error and only 1.5 mV/°C temperature-induced drift - making it suitable for µV-level strain gauge and thermistor signal extraction without chopper stabilization.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Offset Voltage | ±40 µV max - enables sub-mV DC error in 10× gain circuits at room temperature |
| Offset Drift | 150 nV/°C max - limits temperature-induced output drift to ≤1.5 mV/°C in high-gain configurations |
| Supply Current | 20 µA per amplifier - allows continuous operation for >1 year on two AA alkaline cells in portable equipment |
| Gain-Bandwidth Product | 400 kHz - supports stable closed-loop gains up to ~400 at 1 kHz for sensor signal filtering |
| Input Noise (0.01–10 Hz) | 1.1 µVP-P typical - resolves <10 µV DC-level changes in single-stage precision amplifiers |
| Rail-to-Rail I/O | Inputs swing to V− −0.1 V / V+ +0.1 V; outputs swing to V− +18 mV / V+ −20 mV @ 10 kΩ - maximizes dynamic range in 3.3 V systems |
| Common-Mode Rejection | 110 dB min - rejects >99.999% of supply ripple in single-supply instrumentation designs |
Pinout & Package
ISL28230CBZ-T7 is housed in an 8-lead SOIC package (JEDEC MS-012, MDP0027 drawing) with standard pinout and surface-mount compatibility. Thermal resistance θJA = 125 °C/W (typical) on standard FR-4 board.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT_A | Amplifier A output - drives load directly; rail-to-rail swing capability critical for ADC interface |
| 2 | IN−_A | Inverting input of Amplifier A - high-impedance node requiring guard ring layout for <100 pA leakage |
| 3 | IN+_A | Non-inverting input of Amplifier A - accepts signals from 0 V to VCC; no internal clamping diodes |
| 4 | V− | Negative supply - connects to ground in single-supply mode; must be low-impedance for PSRR stability |
| 5 | V+ | Positive supply - accepts 1.8–5.5 V; decoupling capacitor required within 5 mm for noise immunity |
| 6 | IN+_B | Non-inverting input of Amplifier B - independent channel for dual-sensor or reference buffer use |
| 7 | IN−_B | Inverting input of Amplifier B - matched bias current (≤250 pA) ensures common-mode rejection in differential pairs |
| 8 | OUT_B | Amplifier B output - electrically isolated from OUT_A; enables dual-path signal conditioning on one die |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input | Operates with inputs 100 mV beyond V−/V+, eliminating level-shifting circuitry in low-voltage sensor interfaces |
| Ultra-low offset drift | 150 nV/°C max ensures <±0.5 mV output error over −40°C to +85°C in 100× gain circuits |
| Low 1/f noise | 1.1 µVP-P (0.01–10 Hz) enables stable DC amplification without chopper artifacts or complex filtering |
| High open-loop gain | 150 dB minimum guarantees <0.001% gain error in unity-gain buffers and precision instrumentation amps |
| Single-supply operation | 1.8 V minimum supply enables direct integration with Li-ion (3.0–4.2 V) and 2xAA (2.4–3.2 V) battery systems |
| ESD robustness | 4 kV HBM rating protects against handling damage during PCB assembly and field service |
Applications
| Bi-directional Current Sense | Medical Temperature Measurement |
|---|---|
|
Use Scenario: High-side current monitoring in portable infusion pumps using 0.2 Ω shunt resistor and 3.3 V supply. IC Role / Device Role / Timing Role: Precision difference amplifier with rail-to-rail output driving 12-bit SAR ADC input. Use Value: ±40 µV offset enables <±1 mA measurement resolution; 20 µA quiescent current extends battery life by >30% vs. legacy op amps. |
Use Scenario: Linearized thermistor interface in handheld clinical thermometer with 0.1°C accuracy requirement. IC Role / Device Role / Timing Role: Low-drift, low-noise transimpedance amplifier converting thermistor current to voltage for microcontroller ADC. Use Value: 150 nV/°C drift contributes <±0.02°C error over operating range; rail-to-rail I/O maximizes ADC utilization in 3.3 V system. |
| Electronic Weigh Scales | Precision Strain Gauge Sensor |
|
Use Scenario: Bridge excitation and differential amplification in battery-powered retail scale with 1 g resolution. IC Role / Device Role / Timing Role: Dual-channel instrumentation front end: one amp for bridge excitation regulation, second for ratiometric output amplification. Use Value: Matched amplifier pair minimizes thermal gradient errors; 1.1 µVP-P noise ensures stable 100 µV-level signal detection. |
Use Scenario: Full-bridge strain gauge readout in industrial torque sensor operating from 3.3 V supply. IC Role / Device Role / Timing Role: High-gain (G = 1000), DC-coupled amplifier with external RC filter for anti-aliasing before 16-bit sigma-delta ADC. Use Value: 400 kHz GBW supports 100 Hz bandwidth with phase margin >60°; 150 dB AOL ensures <0.01% nonlinearity at full scale. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP6V81-E/SN | Lower offset (10 µV max) but higher quiescent current (65 µA); 1.2 MHz GBW; same 8-lead SOIC footprint | Better DC accuracy but reduces battery life in always-on sensors; higher bandwidth suits AC-coupled designs | Select when ultra-low offset dominates over power; verify thermal drift (0.05 µV/°C) meets system spec |
| LTC2050CS8#TRPBF | Zero-drift architecture; 0.5 µV max offset, 0.005 µV/°C drift; 1.5 MHz GBW; 8-lead SOIC package | Superior long-term stability for calibration-critical lab equipment; higher cost and complexity for simple current sense | Choose for metrology-grade applications where drift must be <1 µV over 10 years; not needed for consumer medical devices |
Compared with MCP6V81-E/SN and LTC2050CS8#TRPBF, the ISL28230CBZ-T7 offers optimal balance of micropower operation (20 µA), low drift (150 nV/°C), and rail-to-rail I/O in a cost-effective SOIC package - making it ideal for battery-constrained, high-accuracy analog front ends where zero-drift complexity is unnecessary.
Availability
ISL28230CBZ-T7 is available at Aetrix Electronics and suitable for bi-directional current sensing, medical temperature measurement, electronic weigh scales, and precision strain gauge sensor applications requiring stable component supply across industrial and medical OEM programs.
Supply support for ISL28230CBZ-T7 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
Renesas Electronics is a global semiconductor leader delivering trusted embedded solutions for automotive, industrial, infrastructure, and IoT markets, with deep expertise in precision analog and mixed-signal design.
The ISL28230CBZ-T7 belongs to Renesas' ISL28x30 family of micropower, low-drift op amps engineered specifically for high-accuracy, low-power sensor signal conditioning in portable and battery-operated medical, industrial, and test equipment.
FAQ
What is the maximum operating temperature range for the ISL28230CBZ-T7?
The ISL28230CBZ-T7 is a commercial-grade device rated for operation from 0°C to +70°C ambient temperature. It is not specified for extended temperature ranges; for −40°C to +125°C operation, select the ISL28230FBZ-T7 variant instead. All electrical specifications in the datasheet apply across this 0°C to +70°C range unless otherwise noted.
Does the ISL28230CBZ-T7 support true rail-to-rail input and output?
Yes, the ISL28230CBZ-T7 supports true rail-to-rail input - inputs operate from V− −0.1 V to V+ +0.1 V - and rail-to-rail output - output swings to within 18 mV of V− and 20 mV of V+ into a 10 kΩ load. This behavior is confirmed in Figures 19 and 20 of the FN7623 datasheet and enables full utilization of 3.3 V ADC references without external level shifting.
What is the typical supply current per amplifier in the ISL28230CBZ-T7?
The ISL28230CBZ-T7 draws 20 µA per amplifier under typical conditions (V+ = 5 V, V− = 0 V, TA = +25°C, RL = open). This value increases to 35 µA maximum across the full operating temperature and supply range. The low quiescent current makes the ISL28230CBZ-T7 especially suitable for always-on sensor nodes powered by coin cells or small Li-ion batteries.
Can the ISL28230CBZ-T7 be used in high-gain DC-coupled amplifier configurations?
Yes, the ISL28230CBZ-T7 is explicitly designed for high-gain DC-coupled applications, as demonstrated in Figure 22 of the datasheet. With 150 dB open-loop gain, ±40 µV max offset, and 150 nV/°C drift, it achieves <±400 mV total output error and only 1.5 mV/°C temperature-induced drift in 10 kV/V configurations - enabling reliable sub-100 nV DC sensitivity without chopper stabilization.
What package type and pin count does the ISL28230CBZ-T7 use?
The ISL28230CBZ-T7 uses an 8-lead SOIC package conforming to JEDEC MS-012 and Renesas drawing M8.15E. Pin assignments follow industry-standard dual op amp configuration: pins 1/8 = OUT_A/OUT_B, pins 2/7 = IN−_A/IN−_B, pins 3/6 = IN+_A/IN+_B, and pins 4/5 = V−/V+. This package is compatible with standard SOIC footprints and reflow profiles per IPC/JEDEC J-STD-020.
ISL28230CBZ-T7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 2
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 0.2V/µs
- Gain Bandwidth Product:
- 400 kHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 250 pA
- Voltage - Input Offset:
- 5 µV
- Current - Supply:
- 20µA (x2 Channels)
- Current - Output / Channel:
- 15 mA
- Voltage - Supply Span (Min):
- 1.8 V
- Voltage - Supply Span (Max):
- 5.5 V
- Operating Temperature:
- 0°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
ISL28230CBZ-T7 FAQ
1.How can I place an order for ISL28230CBZ-T7 through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL28230CBZ-T7 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 ISL28230CBZ-T7 reliable?
The price and inventory of ISL28230CBZ-T7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL28230CBZ-T7 is usually 5 days.
3.What payment methods are accepted for ISL28230CBZ-T7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL28230CBZ-T7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL28230CBZ-T7?
ISL28230CBZ-T7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL28230CBZ-T7 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 ISL28230CBZ-T7?
For technical support, including ISL28230CBZ-T7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL28230CBZ-T7 requirements.
6.How does Aetrix verify that ISL28230CBZ-T7 is sourced from the original manufacturer or authorized distributors?
All ISL28230CBZ-T7 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 ISL28230CBZ-T7 meets industry standards.
7.What is the process for return or replacement of ISL28230CBZ-T7?
All ISL28230CBZ-T7 units undergo pre-shipment inspection (PSI). If there is an issue with ISL28230CBZ-T7, 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 ISL28230CBZ-T7 part is unused and in its original packaging.
Return procedure for ISL28230CBZ-T7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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