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Texas Instruments LM10CH/NOPB
- Part No.:
- LM10CH/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- TO-99-8 Metal Can
- Datasheet:
-
LM10CH/NOPB.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT TO99-8
- Quantity:
- Payment:
- Shipping:
Inventory:364
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Product details
Overview
LM10CH/NOPB from Texas Instruments is a monolithic linear IC integrating a precision voltage reference and an independent 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, maintains 2 mV max input offset voltage and 0.1% max reference regulation, and is widely used in battery-level indicators and thermocouple transmitters.
For engineers reviewing the LM10CH/NOPB datasheet, LM10CH/NOPB pinout, LM10CH/NOPB application, or LM10CH/NOPB equivalent, key selection criteria include its ultra-low minimum supply voltage (1.2 V), floating-mode operation capability, integrated 200 mV reference output, thermal overload protection, and compatibility with remote sensing and two-wire analog transmission systems.
Technical Context
The LM10CH/NOPB implements a dual-function architecture: a trimmed bandgap voltage reference (200 mV nominal) with second-order temperature compensation and a rail-to-rail complementary-output op amp featuring PNP/NPN push-pull stages. Its common-mode input range extends from V− to (V+ − 0.85 V), enabling operation near supply rails.
It supports three distinct operating modes: standard single/dual-supply linear amplification, shunt-regulator configuration using the reference feedback terminal, and floating-mode operation where the op amp output connects to V+, allowing signal conditioning on ungrounded lines - critical for two-wire transmitters and isolated regulators.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.2 V to 40 V - enables direct operation from single alkaline cells or high-voltage industrial supplies without external regulators. |
| Input Offset Voltage | 2 mV (max) - ensures accurate low-level signal amplification in sensor interfaces like thermocouples. |
| Reference Output | 200 mV (nominal), 0.1% regulation (max) - provides stable, low-voltage reference for precision shunt regulators and ratiometric measurements. |
| Op Amp Output Drive | ±20 mA with ±0.4 V saturation - supports direct driving of LEDs, small relays, or feedback networks without external buffers. |
| Supply Current | 270 μA (typ), ≤500 μA (max) - enables multi-year battery life in portable instrumentation and remote monitoring devices. |
| Offset Drift | 2 μV/°C - minimizes thermal error accumulation across −55°C to 125°C industrial temperature range. |
| Reference Drift | 0.002%/°C - ensures long-term stability in precision voltage references for calibration equipment. |
Pinout & Package
LM10CH/NOPB is housed in an 8-pin Small Outline Dual In-line Package (SDIP) with body size 8.255 mm × 8.255 mm and standard through-hole footprint compatible with PDIP-8 layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - Reference Output | Reference voltage source | Delivers 200 mV reference; used as excitation source or feedback node in shunt regulator configurations. |
| 2 - Op Amp Input (–) | Inverting input | Accepts feedback signals or differential inputs; supports high-impedance sensing in battery monitors. |
| 3 - Op Amp Input (+) | Noninverting input | Connects to sensor outputs or reference dividers; common-mode range extends to V−. |
| 4 - V− | Negative supply terminal | Serves as circuit ground or negative rail; also functions as reference return in floating-mode applications. |
| 5 - Balance | Offset null adjustment | Allows external trimming of input offset voltage via potentiometer; improves DC accuracy in precision amplifiers. |
| 6 - Op Amp Output | Amplifier output stage | Drives loads up to ±20 mA; swings within 15 mV of supply rails or delivers regulated current in shunt mode. |
| 7 - V+ | Positive supply terminal | Accepts 1.2–40 V input; powers both op amp and reference; enables operation from single-cell batteries. |
| 8 - Reference Feedback | Reference error amplifier input | Used to set adjustable reference voltage (e.g., 2.5 V) by connecting external resistor divider; enables programmable shunt regulation. |
Key Features
| Feature | Design Value |
|---|---|
| Floating-mode operation | Operates with V+ and V− disconnected from system ground - essential for two-wire 4–20 mA transmitters and isolated power monitors. |
| Ultra-low supply voltage | Functional down to 1.2 V - allows direct integration into coin-cell-powered devices and energy-harvesting systems. |
| Integrated 200 mV reference | Trimmed, temperature-compensated bandgap reference with 0.002%/°C drift - eliminates need for external reference ICs in low-voltage designs. |
| Thermal overload protection | Internal thermal limiting prevents destructive failure during sustained output short-circuit - enhances reliability in unattended industrial equipment. |
| Rail-to-rail output swing | Output reaches within 15 mV of V+ and V− - maximizes dynamic range in low-voltage battery-monitoring circuits. |
Applications
| Battery-Level Indicators | Thermocouple Transmitters |
|---|---|
Use Scenario: Monitoring remaining charge in 1.5 V alkaline or lithium primary cells for portable medical devices. IC Role / Device Role / Timing Role: Precision op amp amplifies small voltage differentials across sense resistors; integrated reference enables ratiometric ADC interfacing. Use Value: 2 mV offset and 2 μV/°C drift ensure <1% measurement error over full temperature range and battery discharge curve. |
Use Scenario: Converting microvolt-level thermocouple outputs into standardized 4–20 mA signals for PLC input modules. IC Role / Device Role / Timing Role: Op amp conditions thermocouple signal; reference sets loop current baseline; floating mode isolates transmitter from field ground. Use Value: 200 mV reference and floating operation eliminate ground-loop errors and enable true two-wire loop-powered design. |
| Voltage Regulators | Remote Amplifiers |
Use Scenario: Building compact, low-power shunt regulators for biasing sensors in distributed IoT nodes. IC Role / Device Role / Timing Role: Reference feedback pin configures adjustable output; op amp drives pass element; 270 μA quiescent current minimizes standby loss. Use Value: Programmable reference (via R1/R2) and ±20 mA drive allow stable 2.5 V or 5 V outputs from 3–36 V input with no external transistor. |
Use Scenario: Amplifying signals from remote strain gauges or pressure sensors located hundreds of meters from control room. IC Role / Device Role / Timing Role: Op amp operates in floating configuration with power and signal shared on same twisted pair; reference stabilizes gain-setting network. Use Value: Common-mode range to V− and 40 V max supply enable operation at remote end without local ground reference or auxiliary power. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision op amp + reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM10CN/NOPB | Same core architecture but rated for 0°C to 70°C commercial temperature range; higher 5 mV max input offset voltage and 0.003%/°C reference drift. | Lower cost for non-industrial applications; unsuitable for extended temperature environments like automotive under-hood or outdoor metering. | Select LM10CN/NOPB only when ambient operating temperature stays within 0–70°C and 5 mV offset is acceptable. |
| LT1004-2.5 | Dedicated 2.5 V shunt reference (no op amp); 0.1% initial tolerance, 50 ppm/°C drift; requires external amplifier for signal conditioning. | Used where only reference function is needed; lacks integrated amplification, floating capability, or low-voltage operation below 2.5 V. | Choose LT1004-2.5 when system already includes a separate op amp and requires higher-accuracy 2.5 V reference without floating-mode needs. |
Compared with LM10CN/NOPB, LM10CH/NOPB offers tighter offset (2 mV vs. 5 mV) and wider temperature range (−55°C to 125°C), making it suitable for harsh environments; versus LT1004-2.5, it integrates amplification and floating operation but trades off reference voltage flexibility and absolute accuracy.
Availability
LM10CH/NOPB is available at Aetrix Electronics and suitable for battery-level indicators, thermocouple transmitters, and voltage regulators requiring stable component supply across extended temperature ranges and low-power operation.
Supply support for LM10CH/NOPB 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 heritage in precision linear ICs and industrial-grade components.
The LM10 series was designed to unify precision reference and op amp functionality in a single package for low-power, wide-supply, and floating-mode applications - targeting portable instrumentation, process control transmitters, and ruggedized sensor interfaces.
FAQ
What is the minimum operating supply voltage for LM10CH/NOPB?
The LM10CH/NOPB operates down to 1.2 V total supply voltage (V+ to V−), with functional operation confirmed as low as 1.1 V in typical conditions. This enables direct use with single 1.5 V alkaline or lithium cells without voltage boosting, supporting ultra-low-power portable instrumentation where every microamp matters. The LM10CH/NOPB maintains specified performance including 270 μA supply current and 2 mV offset voltage across this range.
Can LM10CH/NOPB operate in floating mode, and how is it configured?
Yes, LM10CH/NOPB supports floating-mode operation by connecting the op amp output (pin 6) directly to V+ (pin 7). This disables the PNP output stage, allowing the device to function as a remote comparator or two-wire transmitter powered solely by the signal line. In this mode, the reference and op amp remain fully functional with common-mode range referenced to V−, enabling isolation from system ground. The LM10CH/NOPB datasheet confirms this configuration for thermocouple transmitters and bootstrapped regulators.
What is the purpose of the Balance pin (pin 5) on LM10CH/NOPB?
The Balance pin (pin 5) on LM10CH/NOPB provides access to the op amp's internal offset null network, allowing external trimming of input offset voltage using a 10 kΩ potentiometer connected between pins 1 and 5 (wiper to pin 5). This adjustment reduces DC error in precision DC amplification applications such as strain gauge interfaces or calibrated sensor signal chains. The LM10CH/NOPB specification guarantees ≤2 mV offset before trimming, and trimming can further improve accuracy in critical measurement systems.
How does the reference section of LM10CH/NOPB differ from standard bandgap references?
The LM10CH/NOPB reference uses second-order temperature compensation to eliminate the "bowed" output vs. temperature curve typical of basic bandgap designs, achieving 0.002%/°C drift and 0.1% regulation. Its 200 mV nominal output is internally trimmed and stable down to 1.2 V supply. Unlike discrete references, it shares thermal coupling with the op amp die, minimizing relative drift - a key advantage in ratiometric systems. The LM10CH/NOPB reference also supports programmable outputs via the Reference Feedback pin (pin 8), enabling adjustable shunt regulation without external components.
Is LM10CH/NOPB suitable for driving capacitive loads, and what stability considerations apply?
LM10CH/NOPB exhibits conditional stability with capacitive loads: the datasheet recommends adding a 10 Ω series resistor between the op amp output (pin 6) and capacitive loads >100 pF to prevent oscillation. Its typical phase margin drops below 45° above 10 kHz when driving >1 nF directly. For shunt regulator applications with large output capacitance, the LM10CH/NOPB requires careful compensation per Figure 36 in the datasheet. Stability is verified across −55°C to 125°C, and the LM10CH/NOPB's internal compensation is optimized for resistive loads up to 1.1 kΩ.
LM10CH/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- TO-99-8 Metal Can
- Packaging:
- Bulk
- Product Status:
- Active
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 1
- Output Type:
- -
- Slew Rate:
- -
- Gain Bandwidth Product:
- -
- -3db Bandwidth:
- -
- Current - Input Bias:
- 12 nA
- Voltage - Input Offset:
- 500 µV
- Current - Supply:
- 300µA
- Current - Output / Channel:
- 20 mA
- Voltage - Supply Span (Min):
- 1.1 V
- Voltage - Supply Span (Max):
- 40 V
- Operating Temperature:
- 0°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- TO-99-8
LM10CH/NOPB FAQ
1.How can I place an order for LM10CH/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM10CH/NOPB 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 LM10CH/NOPB reliable?
The price and inventory of LM10CH/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM10CH/NOPB is usually 5 days.
3.What payment methods are accepted for LM10CH/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM10CH/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM10CH/NOPB?
LM10CH/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM10CH/NOPB 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 LM10CH/NOPB?
For technical support, including LM10CH/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM10CH/NOPB requirements.
6.How does Aetrix verify that LM10CH/NOPB is sourced from the original manufacturer or authorized distributors?
All LM10CH/NOPB 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 LM10CH/NOPB meets industry standards.
7.What is the process for return or replacement of LM10CH/NOPB?
All LM10CH/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM10CH/NOPB, 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 LM10CH/NOPB part is unused and in its original packaging.
Return procedure for LM10CH/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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