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Renesas ISL28633FVZ-T7A
- Part No.:
- ISL28633FVZ-T7A
- Manufacturer:
- Renesas
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
ISL28633FVZ-T7A.pdf
- Description:
- IC OPAMP ZER-DRIFT 1CIRC 14TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:149
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Product details
Overview
ISL28633FVZ-T7A from Renesas is a 5V rail-to-rail input/output zero-drift programmable gain instrumentation amplifier (PGIA) with differential output, 9-pin-selectable gains (G = 1 to 1000), ±5µV max input offset voltage, and operation from –40°C to +125°C. It interfaces directly with differential-input ADCs via its REF pin for common-mode voltage control and delivers high-precision signal conditioning in bridge-based sensor front-ends.
For engineers reviewing the ISL28633FVZ-T7A datasheet, ISL28633FVZ-T7A pinout, ISL28633FVZ-T7A application, or ISL28633FVZ-T7A equivalent, this device is selected for ultra-low-drift, high-CMRR analog acquisition in industrial weigh scales, strain gauge transducers, and precision biometric sensing where differential ADC interfacing and wide temperature stability are critical.
Technical Context
The ISL28633FVZ-T7A implements a three-op-amp PGIA architecture with independent gain-stage outputs (VA+, VA–) and a dedicated reference pin (REF) that sets the differential output common-mode voltage. Its 2-bit logic interface (G0/G1) enables nine discrete gain states without external resistors.
Unlike the ISL2853x series, it omits the uncommitted auxiliary op amp and instead optimizes for differential output drive into high-resolution ADCs-supporting both single-supply (2.5V–5.5V) and dual-supply (±1.25V–±2.75V) operation with rail-to-rail I/O swing and RFI-filtered inputs for EMI robustness.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain Range | G = 1, 2, 4, 5, 10, 20, 50, 100, 1000 - selectable via G0/G1 logic pins; no external gain-setting components required |
| Input Offset Voltage | ±5 µV max at +25°C - enables sub-16-bit error budget in 24-bit data acquisition systems |
| Offset Drift | ±50 nV/°C max - ensures <1 µV total drift over –40°C to +125°C industrial range |
| CMRR | 138 dB at G = 100 - rejects common-mode noise from long-line bridge sensors |
| Gain Bandwidth | 2.3 MHz at G ≥ 10 - supports >10 kSPS sampling of conditioned signals with minimal phase lag |
| Supply Range | 2.5V to 5.5V single supply or ±1.25V to ±2.75V dual supply - compatible with low-voltage microcontrollers and isolated power rails |
| Output Type | Differential (OUTA+, OUTA–) - eliminates second-order distortion and improves SNR when driving SAR or delta-sigma ADCs |
Pinout & Package
ISL28633FVZ-T7A is housed in a RoHS-compliant 14-lead TSSOP package (M14.173), thermally rated for θJA = 92°C/W and θJC = 30°C/W, suitable for high-density industrial PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| INA+, INA– | Differential input terminals | High-impedance (10 GΩ), RFI-filtered inputs for bridge sensor connections; support rail-to-rail common-mode range |
| OUTA+, OUTA– | Differential output terminals | Matched, low-noise outputs optimized for direct coupling to differential-input ADCs; rail-to-rail swing |
| REF | Reference voltage terminal | Sets common-mode output voltage (0.6V to V+–1V); enables precise alignment with ADC input range |
| G0, G1 | Gain select logic inputs | 2-bit interface with internal 100kΩ pull-up/pull-down; "Z" state enables high-impedance gain hold |
| VA+, VA– | Gain stage outputs | Accessible intermediate nodes for external filtering or diagnostic monitoring of gain-stage performance |
| V+, V– | Power supply terminals | Support single- or dual-supply operation; V– may be grounded or negative; decoupling required per layout guidelines |
Key Features
| Feature | Design Value |
|---|---|
| Zero-drift architecture | Eliminates thermal drift-induced baseline shift in long-duration measurements (e.g., weight scale settling) |
| Rail-to-rail I/O | Maximizes dynamic range utilization across full supply voltage - critical for low-voltage battery-powered sensors |
| RFI-filtered inputs | Integrated input filtering suppresses high-frequency EMI from motor drives or switching power supplies |
| Programmable gain logic | Hardware-selectable gains reduce firmware overhead and eliminate DAC or digital potentiometer dependencies |
| High CMRR at all gains | Maintains >110 dB CMRR even at G = 1 - preserves accuracy in noisy industrial environments with shared ground paths |
Applications
| Pressure and Strain Gauge Transducers | Weight Scales |
|---|---|
|
Use Scenario: Amplifying mV-level output from Wheatstone bridge pressure sensors in HVAC or industrial process control. IC Role / Device Role / Timing Role: Precision PGIA front-end with differential output driving 24-bit sigma-delta ADC. Use Value: 138 dB CMRR and ±50 nV/°C drift ensure stable calibration over temperature and vibration-induced common-mode noise. |
Use Scenario: Signal conditioning for load cell outputs in commercial/industrial weighing platforms. IC Role / Device Role / Timing Role: Zero-drift instrumentation amplifier with programmable gain to accommodate varying cell sensitivities. Use Value: G = 100–1000 settings enable single hardware design across 1 kg to 1000 kg scale ranges without resistor changes. |
| Biometric Sensing (ECG/Blood Glucose) | Low-Ohmic Current Sense |
|
Use Scenario: Front-end amplification of microvolt-level bio-potentials in portable ECG monitors. IC Role / Device Role / Timing Role: High-input-impedance, low-noise PGIA with differential output for noise-immune ADC interface. Use Value: 0.4 µVP-P (0.1–10 Hz) input noise and rail-to-rail output swing preserve signal integrity in battery-constrained devices. |
Use Scenario: Amplifying shunt voltage in motor phase current sensing or battery management systems. IC Role / Device Role / Timing Role: High-gain, low-offset PGIA with fast overload recovery (<1.5 µs) for transient current events. Use Value: 0.1 V/µs slew rate at G = 100 and 70 µs settling to 0.01% enable accurate capture of PWM-edge current spikes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar programmable gain instrumentation amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD8253ARMZ | Single-ended output; integrated SPI interface; 10 MHz GBW; higher supply current (4.5 mA) | Requires external ADC driver for differential input; better suited for high-speed, digitally controlled gain switching | Select AD8253ARMZ when SPI-based gain reconfiguration and faster bandwidth (>2.3 MHz) are prioritized over differential output and ultra-low drift |
| LTC6915CMS8#PBF | Single-ended output; 10-bit SPI gain control (1–488×); lower CMRR (110 dB @ G=100); wider supply (2.7–10.5 V) | Less suitable for precision bridge sensors requiring >130 dB CMRR; better for general-purpose programmable gain stages | Select LTC6915CMS8#PBF when fine-grained digital gain resolution and wide supply flexibility outweigh need for differential output and zero-drift performance |
Compared with AD8253ARMZ and LTC6915CMS8#PBF, the ISL28633FVZ-T7A uniquely combines differential output, zero-drift architecture, and hardware-programmable gain in a single 14-lead TSSOP-enabling simplified, high-accuracy sensor interfaces without digital control overhead or external op amps.
Availability
ISL28633FVZ-T7A is available at Aetrix Electronics and suitable for industrial weigh scales, bridge-based pressure transducers, and biometric sensing systems requiring stable component supply across extended temperature and long product lifecycles.
Supply support for ISL28633FVZ-T7A 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 applications.
The ISL28633FVZ-T7A belongs to Renesas' precision analog portfolio, designed specifically for high-accuracy sensor signal conditioning in harsh industrial environments where zero-drift, rail-to-rail operation, and differential ADC compatibility are essential.
FAQ
What is the maximum operating temperature range for the ISL28633FVZ-T7A?
The ISL28633FVZ-T7A is rated for continuous operation from –40°C to +125°C, with guaranteed performance across this full industrial temperature range-including input offset voltage, gain error, and CMRR specifications. Its junction temperature limit is +140°C, supporting reliable deployment in enclosed enclosures or high-ambient environments.
Does the ISL28633FVZ-T7A require external components to set gain?
No, the ISL28633FVZ-T7A uses an internal 2-bit logic interface (G0/G1 pins) to select among nine fixed gains (1, 2, 4, 5, 10, 20, 50, 100, 1000) without any external resistors or digital interfaces. The "Z" (high-impedance) state on G0/G1 is internally pulled to mid-supply by 100kΩ resistors, enabling stable gain hold during microcontroller reset or sleep modes.
How does the REF pin function in the ISL28633FVZ-T7A?
The REF pin on the ISL28633FVZ-T7A sets the common-mode voltage of the differential output (OUTA+, OUTA–). It accepts a voltage between (V–)+0.6 V and (V+)–1 V, allowing precise alignment with the input range of differential-input ADCs-such as the ADS1262 or AD7177-without level-shifting circuitry.
Can the ISL28633FVZ-T7A operate from a single 3.3V supply?
Yes, the ISL28633FVZ-T7A supports single-supply operation from 2.5V to 5.5V. At 3.3V, it maintains rail-to-rail input/output swing, 138 dB CMRR at G = 100, and ±5 µV max input offset. The REF pin must be biased within 0.6V to 2.3V (i.e., V– + 0.6V to V+ – 1V), making 1.65V a typical choice for symmetric differential output centered at midsupply.
What is the purpose of the VA+ and VA– pins on the ISL28633FVZ-T7A?
The VA+ and VA– pins expose the outputs of the first-stage gain amplifiers inside the ISL28633FVZ-T7A's three-op-amp architecture. They allow external RC filtering to reduce high-frequency noise before final output buffering, or enable real-time monitoring of gain-stage behavior for diagnostics and fault detection in safety-critical systems.
ISL28633FVZ-T7A Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 14-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- Zero-Drift
- Number of Circuits:
- 1
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 0.8V/µs
- Gain Bandwidth Product:
- 2.3 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 50 pA
- Voltage - Input Offset:
- 0.2 µV
- Current - Supply:
- 3mA
- Current - Output / Channel:
- 45 mA
- Voltage - Supply Span (Min):
- 2.5 V
- Voltage - Supply Span (Max):
- 5.5 V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-TSSOP
ISL28633FVZ-T7A FAQ
1.How can I place an order for ISL28633FVZ-T7A through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL28633FVZ-T7A 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 ISL28633FVZ-T7A reliable?
The price and inventory of ISL28633FVZ-T7A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL28633FVZ-T7A is usually 5 days.
3.What payment methods are accepted for ISL28633FVZ-T7A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL28633FVZ-T7A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL28633FVZ-T7A?
ISL28633FVZ-T7A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL28633FVZ-T7A 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 ISL28633FVZ-T7A?
For technical support, including ISL28633FVZ-T7A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL28633FVZ-T7A requirements.
6.How does Aetrix verify that ISL28633FVZ-T7A is sourced from the original manufacturer or authorized distributors?
All ISL28633FVZ-T7A 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 ISL28633FVZ-T7A meets industry standards.
7.What is the process for return or replacement of ISL28633FVZ-T7A?
All ISL28633FVZ-T7A units undergo pre-shipment inspection (PSI). If there is an issue with ISL28633FVZ-T7A, 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 ISL28633FVZ-T7A part is unused and in its original packaging.
Return procedure for ISL28633FVZ-T7A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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