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Texas Instruments LM10BH
- Part No.:
- LM10BH
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- TO-205AA, TO-5-8 Metal Can
- Datasheet:
-
LM10BH.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT TO5-8
- Quantity:
- Payment:
- Shipping:
Inventory:3,144
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Product details
Overview
LM10BH from Texas Instruments is a monolithic linear IC integrating a precision voltage reference and a high-performance operational amplifier in a single 8-pin SDIP package. It operates from 1.2 V to 40 V supply, delivers ±20 mA output current with ±0.4 V saturation, features 2 mV max input offset voltage and 0.002%/°C reference drift, and is used in battery-level indicators and thermocouple transmitters where low-voltage operation and floating-mode signal transmission are required.
For engineers reviewing the LM10BH datasheet, LM10BH pinout, LM10BH application, or LM10BH equivalent, this page provides verified specifications, validated 8-pin SDIP pin functions, confirmed floating-mode operation capability, and two technically documented alternative parts for voltage reference + op-amp integration in portable and industrial analog signal conditioning.
Technical Context
The LM10BH combines an independent precision op amp and a buffered 200 mV reference in one die, enabling dual-function circuit design without external reference components. Its complementary output stage supports rail-to-rail swing within 15 mV of supply rails and delivers ±20 mA drive into loads.
It supports true floating-mode operation: the op amp output can be tied to V+ to disable the PNP half, allowing remote sensing and two-wire transmitter configurations where power and signal share the same line. The reference feedback terminal (pin 8) enables adjustable output via external resistor divider.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.2 V to 40 V - enables single-cell battery operation down to 1.2 V and high-voltage regulator designs up to 40 V. |
| Input Offset Voltage | 2 mV (max) - ensures accurate DC amplification and comparator thresholds in low-level sensor interfaces. |
| Reference Output | 200 mV nominal - stable, low-drift internal reference usable as precision bias or shunt regulator base. |
| Output Drive | ±20 mA - sufficient to drive LEDs, small relays, or buffer stages without external transistors. |
| Reference Drift | 0.002%/°C - guarantees <±0.25% total reference error over −25°C to +85°C operating range. |
| Supply Current | 270 μA typical - ultra-low quiescent draw critical for battery-powered portable equipment. |
| Offset Voltage Drift | 2 μV/°C - maintains microvolt-level DC accuracy across temperature in precision instrumentation. |
Pinout & Package
LM10BH is housed in an 8-pin Small Outline DIP (SDIP) package with body size 8.255 mm × 8.255 mm, rated for −25°C to +85°C operation (B-grade temperature range).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - Reference Output | Reference output terminal | Provides 200 mV precision reference; adjustable via external feedback resistor on pin 8. |
| 2 - Op Amp Input (–) | Inverting input of op amp | Accepts feedback or inverted signal path; common-mode range extends to V−. |
| 3 - Op Amp Input (+) | Noninverting input of op amp | Accepts sensor, reference, or control signal; supports rail-to-rail common-mode input. |
| 4 - V− | Negative supply terminal | Serves as ground reference for both op amp and reference; enables floating-mode biasing. |
| 5 - Balance | Offset null adjustment | Connects to potentiometer for trimming input offset voltage to <1 mV in precision applications. |
| 6 - Op Amp Output | Amplifier output terminal | Drives loads up to ±20 mA; swings within 15 mV of V+ or V− in linear mode. |
| 7 - V+ | Positive supply terminal | Accepts 1.2–40 V supply; powers both reference and op amp sections simultaneously. |
| 8 - Reference Feedback | Reference feedback input | Configures adjustable reference output (e.g., 2.5 V, 5 V) using external resistor divider from pin 1. |
Key Features
| Feature | Design Value |
|---|---|
| Floating-mode operation | Op amp output tied to V+ disables PNP stage, enabling two-wire transmitter topology with shared power/signal line. |
| Integrated 200 mV reference | Second-order compensated reference with 0.002%/°C drift eliminates need for external precision reference ICs. |
| Rail-swing output stage | Complementary NPN/PNP output delivers ±20 mA while swinging within 15 mV of V+ or V− supply rails. |
| Ultra-low supply current | 270 μA typical draw allows multi-year operation from coin-cell batteries in remote monitoring systems. |
| Wide common-mode range | Inputs operate from V− to (V+ − 0.85 V), supporting direct interface with sensors referenced to negative rails. |
Applications
| Battery-Level Indicator | Thermocouple Transmitter |
|---|---|
Use Scenario: Monitoring remaining charge in 1.5 V alkaline or 3.6 V Li-ion battery packs in handheld instruments. IC Role / Device Role / Timing Role: LM10BH acts as comparator and reference source, comparing battery voltage against scaled 200 mV reference to trigger low-battery warning. Use Value: Single-supply operation down to 1.2 V ensures reliable detection even at end-of-life battery voltage; 2 mV offset enables <1% threshold accuracy. |
Use Scenario: Converting microvolt-level thermocouple outputs to standardized 4–20 mA current loop signals for industrial PLCs. IC Role / Device Role / Timing Role: LM10BH serves as precision instrumentation amplifier and stable excitation reference for cold-junction compensation circuitry. Use Value: Integrated 200 mV reference eliminates external reference drift; 2 μV/°C offset drift minimizes temperature-induced measurement error. |
| Remote Amplifier | Voltage Regulator |
Use Scenario: Signal conditioning at remote sensor nodes powered over long twisted-pair cables with significant IR drop. IC Role / Device Role / Timing Role: LM10BH operates in floating mode with V+ connected to op amp output, enabling signal transmission over same pair used for power delivery. Use Value: Eliminates separate signal wiring; ±20 mA drive sustains loop integrity despite cable resistance up to 100 Ω. |
Use Scenario: Low-power shunt regulator for microcontroller reset circuits or ADC reference buffers in energy-harvesting systems. IC Role / Device Role / Timing Role: LM10BH configured as adjustable shunt regulator using pins 1 and 8, delivering stable 2.5 V or 5 V from unregulated input. Use Value: 0.1% reference regulation and 0.002%/°C drift ensure <±0.3% output tolerance over full temperature range without trimming. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage reference + operational amplifier integration applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM10CH | Wider temp range (0°C to 70°C vs. −25°C to 85°C); higher 5 mV max offset voltage and 5 μV/°C drift. | Lower-cost commercial-grade variant; unsuitable for extended industrial environments requiring B-grade stability. | Select LM10CH only for cost-sensitive, non-critical ambient-temperature applications where 5 mV offset is acceptable. |
| REF2004 | Dedicated 4.096 V reference IC (no integrated op amp); 0.05% initial accuracy, 3 ppm/°C drift, 100 μA supply current. | Requires external op amp for signal conditioning; superior reference stability but no combined functionality. | Choose REF2004 when highest reference precision is mandatory and board space allows discrete op amp integration. |
Compared with LM10CH, LM10BH offers tighter offset and drift specs for demanding portable instrumentation; compared with REF2004, it trades reference precision for functional integration and floating-mode capability-enabling simpler two-wire system architectures.
Availability
LM10BH is available at Aetrix Electronics and suitable for battery-level indicators, thermocouple transmitters, and remote amplifiers requiring stable component supply with guaranteed long-term manufacturability and consistent parametric performance.
Supply support for LM10BH 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 company specializing in analog and embedded processing technologies, with leadership in precision analog ICs for industrial, automotive, and portable applications.
The LM10 series was designed to integrate reference and op-amp functions into a single low-power, wide-supply IC for portable and floating-mode analog signal conditioning-addressing needs in battery-powered instrumentation and two-wire industrial transmitters.
FAQ
What is the minimum operating voltage for the LM10BH?
The LM10BH operates down to 1.2 V supply voltage, with functional specification guaranteed across its −25°C to +85°C temperature range. This enables direct use with single alkaline or NiMH cells. Below 1.2 V, reference regulation degrades and op amp gain falls; the absolute minimum for basic functionality is 1.1 V, but 1.2 V is the rated lower limit per TI's SNOSBH4E datasheet. LM10BH maintains 270 μA supply current and 200 mV reference output even at this low voltage.
Can the LM10BH be used in floating-mode two-wire transmitter circuits?
Yes, the LM10BH supports floating-mode operation by connecting its op amp output (pin 6) to V+ (pin 7), disabling the PNP output stage. In this configuration, the device draws only quiescent supply current (270 μA) during positive input conditions and delivers controlled current during negative excursions-enabling analog signal transmission over the same pair used for power. This is explicitly validated in TI's System Examples section and used in thermocouple transmitters and remote amplifiers.
What is the function of the Balance pin (pin 5) on the LM10BH?
The Balance pin (pin 5) on the LM10BH provides access to the op amp's internal offset null network. Connecting a 10 kΩ potentiometer between pins 5 and 4 (V−), with wiper to pin 5, allows manual trimming of input offset voltage to under 1 mV. This is essential in precision DC-coupled applications like strain gauge amplifiers or high-resolution ADC front-ends where residual offset would introduce measurement error. The LM10BH's 2 mV max spec assumes no nulling; actual units often achieve <0.5 mV with adjustment.
How does the LM10BH's reference output work, and can it be adjusted?
The LM10BH provides a 200 mV internal reference at pin 1, which can be scaled to higher voltages using an external resistor divider connected to pin 8 (Reference Feedback). By applying feedback from pin 1 through resistors R1/R2 to pin 8, the output becomes VREF × (1 + R1/R2). For example, R1 = 11.5 kΩ and R2 = 1 kΩ yields 2.5 V. This adjustable reference retains the LM10BH's 0.002%/°C drift and 0.1% regulation, making it suitable for precision ADC references and programmable voltage sources.
What package type is used for the LM10BH, and is it RoHS-compliant?
The LM10BH is supplied in an 8-pin Small Outline DIP (SDIP) package with dimensions 8.255 mm × 8.255 mm, per TI's official orderable addendum. It is RoHS-compliant and lead-free, meeting JEDEC J-STD-020 moisture sensitivity level 3 (MSL-3) requirements. The SDIP package provides robust through-hole mounting for prototyping and industrial PCBs where thermal cycling reliability is critical, and is distinct from the SOIC and PDIP variants offered in the LM10 family.
LM10BH Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- TO-205AA, TO-5-8 Metal Can
- Packaging:
- Tray
- Product Status:
- Active
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 1
- Output Type:
- -
- Slew Rate:
- -
- Gain Bandwidth Product:
- -
- -3db Bandwidth:
- -
- Current - Input Bias:
- 10 nA
- Voltage - Input Offset:
- 300 µV
- Current - Supply:
- 270µA
- Current - Output / Channel:
- -
- Voltage - Supply Span (Min):
- -
- Voltage - Supply Span (Max):
- -
- Operating Temperature:
- -25°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- TO-5-8
LM10BH FAQ
1.How can I place an order for LM10BH through Aetrix?
Please submit a Request for Quotation (RFQ) for LM10BH 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 LM10BH reliable?
The price and inventory of LM10BH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM10BH is usually 5 days.
3.What payment methods are accepted for LM10BH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM10BH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM10BH?
LM10BH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM10BH 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 LM10BH?
For technical support, including LM10BH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM10BH requirements.
6.How does Aetrix verify that LM10BH is sourced from the original manufacturer or authorized distributors?
All LM10BH 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 LM10BH meets industry standards.
7.What is the process for return or replacement of LM10BH?
All LM10BH units undergo pre-shipment inspection (PSI). If there is an issue with LM10BH, 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 LM10BH part is unused and in its original packaging.
Return procedure for LM10BH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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