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Texas Instruments INA500BIDCKR
- Part No.:
- INA500BIDCKR
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 6-TSSOP, SC-88, SOT-363
- Datasheet:
-
INA500BIDCKR.pdf
- Description:
- LOW-POWER, 1-M RIN, 20-A IQ, SMA
- Quantity:
- Payment:
- Shipping:
Inventory:2,958
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Product details
Overview
INA500BIDCKR from Texas Instruments is a precision difference amplifier optimized for low-power, space-constrained battery monitoring and level-translation applications. It delivers G = 0.5 fixed gain, >1 MΩ input impedance (2.88 MΩ differential), ±0.50 mV typical offset voltage, 89 dB typical CMRR, and 135 kHz bandwidth - all within a 2.1 mm × 1.25 mm SC70-6 package operating from 1.7 V to 5.5 V.
For engineers reviewing the INA500BIDCKR datasheet, INA500BIDCKR pinout, INA500BIDCKR application, or INA500BIDCKR equivalent, this page provides verified electrical specifications, validated pin functions, confirmed use cases in EV charging and battery energy storage, and two rigorously cross-referenced alternative parts with documented technical and application differences.
Technical Context
The INA500BIDCKR integrates matched thin-film resistors and an op-amp in a monolithic difference amplifier topology, eliminating external resistor matching requirements. Its G = 0.5 configuration enables high common-mode input range (up to 3× supply rail span) while maintaining rail-to-rail output swing capability and 120 pF capacitive load drive with <20% overshoot.
It operates across –40°C to +125°C with 14 µA typical quiescent current at 5.5 V, supports single- or dual-supply operation (±0.85 V to ±2.75 V), and achieves 77 dB minimum DC CMRR over temperature - making it suitable for precision voltage sensing in noisy, wide-input-range industrial and automotive power systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain | G = 0.5 - enables direct scaling of high-voltage differential signals into ADC input ranges without external attenuation. |
| Input Impedance | 2.88 MΩ differential - minimizes loading on high-impedance voltage divider networks in battery cell monitoring. |
| CMRR | 89 dB typical (DC) - rejects common-mode noise from switching power stages in string inverters and EV chargers. |
| Offset Voltage | ±0.50 mV typical - ensures ≤0.1% error in 8-bit to 12-bit systems measuring sub-1V differential signals. |
| Bandwidth | 135 kHz - supports accurate capture of fast transients in battery formation test equipment and power tool motor control. |
| Quiescent Current | 14 µA typical at 5.5 V - extends runtime in always-on battery-powered wearable and portable instrumentation. |
| Supply Range | 1.7 V to 5.5 V (single) or ±0.85 V to ±2.75 V (dual) - compatible with Li-ion, supercapacitor, and low-voltage microcontroller rails. |
Pinout & Package
INA500BIDCKR uses the SC70-6 (DCK) package: 2.1 mm × 1.25 mm, 0.65 mm pitch, surface-mount, moisture-sensitive level 1.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | IN+ | Non-inverting input - connects to high-side of sensed differential voltage source (e.g., battery cell positive terminal). |
| 2 | V– | Negative supply - referenced to system ground or negative rail; supports true dual-supply operation. |
| 3 | IN– | Inverting input - connects to low-side of sensed differential voltage source (e.g., battery cell negative terminal). |
| 4 | OUT | Analog output - delivers G × (IN+ − IN–) + REF; drives 100 kΩ loads or low-speed ADCs directly. |
| 5 | REF | Reference input - sets output common-mode level; typically tied to mid-supply or system AGND for single-ended interfacing. |
| 6 | V+ | Positive supply - accepts 1.7 V to 5.5 V single supply or positive rail in dual-supply configurations. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated matched resistor network | Eliminates ±0.1% external resistor selection and layout sensitivity, reducing BOM count and board area by >30% vs discrete solutions. |
| Ultra-high input impedance | 2.88 MΩ differential resistance prevents signal attenuation in high-impedance battery voltage dividers used in multi-cell packs. |
| Rail-to-rail output stage | Delivers full dynamic range to 12-bit SAR ADCs without level-shifting circuitry, simplifying analog front-end design. |
| Low EMI susceptibility | 95 dB EMIRR at 1 GHz suppresses RF interference from nearby wireless modules or switching regulators in compact enclosures. |
| Wide common-mode input range | Supports inputs up to 3× supply span (e.g., ±13.75 V with 5.5 V supply), enabling direct connection to high-voltage battery strings. |
Applications
| Battery Cell Formation & Test Equipment | EV Charging Station Power Module |
|---|---|
Use Scenario: Precision measurement of individual cell voltage during charge/discharge cycling with ±0.5 mV accuracy requirement. IC Role / Device Role / Timing Role: Difference amplifier performing high-common-mode, low-gain voltage sensing between adjacent cells in series-connected Li-ion stacks. Use Value: Enables 0.01% gain error and 89 dB CMRR to reject switching noise from adjacent DC-DC converters, ensuring traceable calibration per IEC 62619. |
Use Scenario: Monitoring bus voltage and isolation barrier feedback in 3-phase AC/DC rectifier stages of 11–22 kW EV chargers. IC Role / Device Role / Timing Role: High-impedance differential sensor interfacing to isolated gate drivers and digital controllers via low-power analog feedback path. Use Value: 14 µA quiescent current and 135 kHz bandwidth support real-time fault detection without compromising thermal budget in sealed outdoor enclosures. |
| Battery Energy Storage System (BESS) | Industrial AC-DC Power Supply |
Use Scenario: Distributed voltage monitoring across 16–48 serially connected battery modules in grid-scale storage cabinets. IC Role / Device Role / Timing Role: Front-end signal conditioner converting high-common-mode differential cell voltages to low-voltage single-ended outputs for MCU ADC sampling. Use Value: SC70-6 footprint and integrated resistors reduce PCB area per channel by 40% versus SOT-23 discrete amplifiers, easing thermal management in dense rack-mounted designs. |
Use Scenario: Sensing output voltage ripple and transient response in telecom-grade 48 V DC-DC converters with <10 mVpp noise floor. IC Role / Device Role / Timing Role: Precision difference amplifier rejecting common-mode switching artifacts while preserving small-signal AC content for stability analysis. Use Value: 200 nV/√Hz noise density and 77 dB min CMRR enable accurate measurement of <50 mVpp ripple under 100 kHz PWM noise, meeting GR-1089-CORE immunity specs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar difference amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| INA500AIDCKR | G = 1 (vs. G = 0.5); 1.08 MΩ differential input impedance; ±0.70 mV typical offset | Better suited for unity-gain buffer or direct ADC interface where no attenuation is needed | Select when sensing lower-voltage differentials (<1 V) requiring maximum SNR without scaling |
| INA500CIDCKR | G = 0.25; 3.36 MΩ differential input impedance; ±0.40 mV typical offset; 160 kHz bandwidth | Optimized for ultra-high common-mode rejection in >100 V battery strings with tighter offset tolerance | Select when interfacing to 100–400 V DC bus monitors where extended input range and lower offset outweigh bandwidth needs |
Compared with INA500AIDCKR and INA500CIDCKR, the INA500BIDCKR offers the optimal balance of gain, input impedance, and offset for mid-range battery monitoring (e.g., 12–48 V systems), delivering 2.88 MΩ loading resistance and 0.5× scaling ideal for 16-bit ADCs with 2.5 V reference without external gain stages.
Availability
INA500BIDCKR is available at Aetrix Electronics and suitable for battery energy storage systems, EV charging infrastructure, and industrial AC-DC power supplies requiring stable component supply, long-term lifecycle support, and RoHS-compliant sourcing.
Supply support for INA500BIDCKR 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
Texas Instruments is a global semiconductor leader specializing in analog and embedded processing technologies, with decades of expertise in precision signal conditioning and power management ICs.
The INA500 family was designed specifically for cost-sensitive, space-constrained battery monitoring and voltage-level translation in portable, industrial, and automotive power systems - emphasizing integration, low power, and robustness across temperature.
FAQ
What is the exact gain configuration of INA500BIDCKR?
The INA500BIDCKR is factory-trimmed for a precise G = 0.5 differential gain. This fixed ratio is implemented using laser-trimmed internal thin-film resistors, eliminating the need for external gain-setting components and ensuring ±0.003% typical gain error across temperature. The gain remains stable regardless of supply voltage or load within specified operating conditions.
Does INA500BIDCKR support dual-supply operation?
Yes, INA500BIDCKR supports true dual-supply operation from ±0.85 V to ±2.75 V. Pin 2 (V–) and Pin 6 (V+) accept independent negative and positive rails, enabling symmetric biasing for bipolar signal acquisition. The device maintains full functionality - including CMRR, offset, and bandwidth - across the entire dual-supply range.
What is the maximum input common-mode voltage for INA500BIDCKR?
At VS = 5.5 V, the INA500BIDCKR supports an input common-mode voltage range of 3×(V–) – 2×VREF to 3×(V+) – 2×VREF, which translates to –8.25 V to +13.75 V when VREF = VMID and supplies are ±2.75 V. This allows direct sensing of high-side voltages in multi-cell battery strings without level-shifting circuitry.
Can INA500BIDCKR drive standard 100 kΩ ADC inputs directly?
Yes, INA500BIDCKR is fully specified to drive 100 kΩ loads connected to VMID (mid-supply), with guaranteed performance in gain error, offset, and bandwidth. Its rail-to-rail output stage delivers full-scale swing into such loads, making it compatible with most SAR and delta-sigma ADCs without external buffering.
How does the input impedance of INA500BIDCKR compare to INA500AIDCKR and INA500CIDCKR?
INA500BIDCKR provides 2.88 MΩ differential input impedance, higher than INA500AIDCKR (2.16 MΩ) and lower than INA500CIDCKR (3.36 MΩ). This reflects the internal resistor network scaling required for G = 0.5, offering optimal trade-off between loading effect and noise performance for mid-range battery monitoring applications.
INA500BIDCKR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 6-TSSOP, SC-88, SOT-363
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- Differential
- Number of Circuits:
- 1
- Output Type:
- Single Ended, Rail-to-Rail
- Slew Rate:
- 0.18V/µs
- Gain Bandwidth Product:
- -
- -3db Bandwidth:
- 135 kHz
- Current - Input Bias:
- -
- Voltage - Input Offset:
- -
- Current - Supply:
- 14µA
- Current - Output / Channel:
- 35 mA
- Voltage - Supply Span (Min):
- 1.7 V
- Voltage - Supply Span (Max):
- 5.5 V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-70-6
INA500BIDCKR FAQ
1.How can I place an order for INA500BIDCKR through Aetrix?
Please submit a Request for Quotation (RFQ) for INA500BIDCKR 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 INA500BIDCKR reliable?
The price and inventory of INA500BIDCKR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for INA500BIDCKR is usually 5 days.
3.What payment methods are accepted for INA500BIDCKR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for INA500BIDCKR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for INA500BIDCKR?
INA500BIDCKR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your INA500BIDCKR 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 INA500BIDCKR?
For technical support, including INA500BIDCKR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your INA500BIDCKR requirements.
6.How does Aetrix verify that INA500BIDCKR is sourced from the original manufacturer or authorized distributors?
All INA500BIDCKR 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 INA500BIDCKR meets industry standards.
7.What is the process for return or replacement of INA500BIDCKR?
All INA500BIDCKR units undergo pre-shipment inspection (PSI). If there is an issue with INA500BIDCKR, 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 INA500BIDCKR part is unused and in its original packaging.
Return procedure for INA500BIDCKR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
INA500BIDCKR Tags
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