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Texas Instruments LHV870LCX/NOPB
- Part No.:
- LHV870LCX/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 10-WFQFN
- Datasheet:
-
LHV870LCX/NOPB.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT 10UQFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,513
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Product details
Overview
LHV870LCX/NOPB from Texas Instruments is a single-channel, high-voltage, ultra-low-noise operational amplifier optimized for high-fidelity audio and precision instrumentation. It delivers 2.7 nV/√Hz input voltage noise density, ±20 V/μs slew rate, and 55 MHz gain bandwidth product while operating from ±2.5 V to ±22 V supplies - enabling low-distortion signal amplification in professional audio preamplifiers and ultrasound front-ends.
For engineers reviewing the LHV870LCX/NOPB datasheet, LHV870LCX/NOPB pinout, LHV870LCX/NOPB application, or LHV870LCX/NOPB equivalent, key selection criteria include its 0.00003% THD+N at 3 VRMS, 140 dB open-loop gain into 600 Ω, and guaranteed stability with up to 100 pF capacitive loads - critical for active filter and line driver designs requiring wide dynamic range and DC accuracy.
Technical Context
The LHV870LCX/NOPB employs a proprietary high-voltage bipolar process to achieve simultaneous low noise (2.7 nV/√Hz), high slew rate (±20 V/μs), and exceptional DC precision (0.1 mV VOS, 120 dB CMRR/PSRR). Its output stage drives 600 Ω loads to within 1.4 V of either rail and supports ±26 mA continuous output current.
Designed for unity-gain stability, it maintains phase margin >60° with 100 pF capacitive loads and exhibits vanishingly low DC gain linearity error (0.000009%), making it suitable for RIAA phono preamps and high-resolution ADC driver stages where harmonic integrity and DC offset rejection are paramount.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | ±2.5 V to ±22 V - supports dual-rail operation across industrial and pro-audio supply rails without level-shifting. |
| Input Voltage Noise Density | 2.7 nV/√Hz @ 1 kHz - enables sub-μV-level signal amplification in microphone and sensor front-ends. |
| Slew Rate | ±20 V/μs - preserves transient fidelity in fast-slewing audio waveforms and pulse amplification. |
| Gain Bandwidth Product | 55 MHz - allows stable closed-loop gains up to ~100× at 500 kHz for active crossover networks. |
| THD+N | 0.00003% @ 3 VRMS, 1 kHz, 2 kΩ - meets Class A audio preamp requirements for distortion-limited dynamic range. |
| Open-Loop Gain | 140 dB @ 600 Ω load - ensures <1 ppm gain error in precision transimpedance and reference buffer applications. |
| Input Offset Voltage | 0.1 mV (max) - minimizes DC error in DC-coupled instrumentation chains and active filters. |
Pinout & Package
Package: 10-lead UQFN (NKY0010A), 3 mm × 3 mm, 0.5 mm pitch, wettable flank, RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC (Pin 1) | Positive power supply | Accepts +2.5 V to +22 V; requires local 100 nF ceramic decoupling. |
| VEE/GND (Pin 2) | Negative power supply / ground reference | Accepts –2.5 V to –22 V; must be low-impedance return path for output current. |
| OUTPUT 1 (Pin 3) | Amplifier output | Capable of ±26 mA drive into 600 Ω; stable with ≤100 pF load capacitance. |
| NC (Pins 4, 7, 8, 9, 10) | No connect | Internally unconnected; must remain floating per TI design guidelines. |
| IN–1 (Pin 5) | Inverting input | High-impedance node (1000 MΩ common-mode ZIN) for feedback network connection. |
| IN+1 (Pin 6) | Non-inverting input | DC-coupled input with ±20.8 V common-mode range at ±22 V supply. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low voltage noise | 2.7 nV/√Hz enables detection of microvolt-level signals in test equipment and medical ultrasound receivers. |
| High output drive capability | ±26 mA into 600 Ω allows direct driving of professional line-level interfaces without external buffers. |
| Output short-circuit protection | Internally limited current prevents latch-up or thermal damage during fault conditions. |
| High PSRR/CMRR | 120 dB PSRR and CMRR reject power supply ripple and common-mode interference in noisy industrial environments. |
| DC gain linearity error | 0.000009% ensures negligible harmonic generation in high-precision DC-coupled gain stages. |
Applications
| Professional Audio Preamplifier | Ultrasound Signal Conditioning |
|---|---|
Use Scenario: Low-noise amplification of moving-coil phono cartridge outputs with RIAA equalization. IC Role / Device Role / Timing Role: Primary gain stage with DC-coupled input and precise passive/active filter integration. Use Value: 0.00003% THD+N and 2.7 nV/√Hz noise preserve harmonic integrity and dynamic range above 90 dB SNR (A-weighted). | Use Scenario: Amplifying weak echo signals from piezoelectric transducers in portable ultrasound systems. IC Role / Device Role / Timing Role: First-stage low-noise amplifier before programmable gain and ADC sampling. Use Value: ±20 V/μs slew rate resolves fast-rising ultrasonic pulses; 140 dB open-loop gain ensures accurate gain control over temperature. |
| High-Fidelity Line Driver | Active Filter Equalization |
Use Scenario: Driving balanced 600 Ω audio lines over distances up to 100 m in studio infrastructure. IC Role / Device Role / Timing Role: Output buffer with rail-to-rail swing capability and low output impedance (0.01 Ω). Use Value: Output swings to within 1.4 V of rails at 600 Ω, delivering ≥12 VRMS into terminated lines with <0.0001% IMD. | Use Scenario: Implementing 2nd-order Butterworth high-pass and low-pass sections in digital mixing console analog I/O. IC Role / Device Role / Timing Role: Active filter core with unity-gain stability and minimal phase distortion. Use Value: 55 MHz GBWP supports Q = 10 filter topologies up to 10 kHz with <0.1° phase error; 100 pF load tolerance simplifies PCB layout. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-voltage, low-noise op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA1612AIDR | Lower supply range (±2.25 V to ±18 V), 1.1 nV/√Hz noise, no short-circuit protection | Better suited for battery-powered audio; lacks LHV870LCX/NOPB's 600 Ω drive and high-voltage headroom | Select when ultra-low noise dominates over output drive and supply flexibility. |
| AD827JRZ | Higher noise (4.5 nV/√Hz), ±250 mA output, wider supply (±4 V to ±18 V), no 100 pF load guarantee | Preferred for high-current video line drivers; less optimal for precision audio due to higher distortion | Choose only if peak output current >±100 mA is required and THD+N >0.0001% is acceptable. |
Compared with OPA1612AIDR and AD827JRZ, the LHV870LCX/NOPB uniquely balances 2.7 nV/√Hz noise, ±20 V/μs slew rate, and 600 Ω drive capability within a 10-pin UQFN package - making it irreplaceable for high-fidelity, high-voltage analog signal chains where all three parameters are simultaneously constrained.
Availability
LHV870LCX/NOPB is available at Aetrix Electronics and suitable for professional audio equipment, medical ultrasound front-ends, and precision test instrumentation requiring stable component supply and long-term design continuity.
Supply support for LHV870LCX/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 expertise in high-performance op-amps and signal chain solutions.
The LHV870LCX/NOPB belongs to TI's high-voltage, low-noise precision op-amp product line, engineered specifically for demanding audio, medical imaging, and test equipment applications where distortion, noise, and DC accuracy are non-negotiable.
FAQ
What is the maximum capacitive load the LHV870LCX/NOPB can drive without instability?
The LHV870LCX/NOPB is specified for stable operation with capacitive loads up to 100 pF. Driving larger loads requires isolation via a series resistor (e.g., 10–50 Ω) placed between the output and the load capacitance to maintain phase margin and prevent peaking or oscillation. This requirement is confirmed in the "APPLICATION INFORMATION" section of the SNOSB50B datasheet.
Does the LHV870LCX/NOPB support single-supply operation?
Yes, the LHV870LCX/NOPB supports single-supply operation with a total supply voltage ranging from 5 V to 44 V (i.e., VCC = 0 V to VCC = 44 V, VEE = 0 V). Its input common-mode range extends to within 2 V of either rail, and output swings to within 1 V of VCC and 1.4 V of VEE under 2 kΩ load - enabling robust single-ended configurations in data acquisition systems.
What is the typical quiescent current of the LHV870LCX/NOPB?
The LHV870LCX/NOPB draws 5 mA typical total quiescent current (IS) at ±18 V supply with zero output load. Maximum quiescent current is 6.5 mA across temperature and supply variations. This value is measured per the Electrical Characteristics table in the SNOSB50B datasheet under "Total Quiescent Current".
Is the LHV870LCX/NOPB pin-compatible with other TI op-amps in the same package?
No - the LHV870LCX/NOPB uses a custom 10-pin UQFN (NKY0010A) pinout with five NC pins and non-standard placement of IN+, IN–, OUTPUT, VCC, and VEE. It is not pin-compatible with OPA16xx, TL07x, or any other TI op-amp family. Layout must follow the Connection Diagram in Figure 1 of the SNOSB50B datasheet.
Why is the LHV870LCX/NOPB marked "Not Recommended For New Designs"?
The LHV870LCX/NOPB is designated "Not Recommended For New Designs" by Texas Instruments due to strategic portfolio rationalization, not performance or reliability issues. It remains fully functional, in production, and supported with full datasheet documentation (SNOSB50B). Customers designing new products should evaluate TI's newer alternatives like OPA1612 or OPA827, but LHV870LCX/NOPB remains viable for legacy continuity and niche high-voltage audio applications.
LHV870LCX/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 10-WFQFN
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 1
- Output Type:
- -
- Slew Rate:
- 20V/µs
- Gain Bandwidth Product:
- 55 MHz
- -3db Bandwidth:
- 10 MHz
- Current - Input Bias:
- 10 nA
- Voltage - Input Offset:
- 100 µV
- Current - Supply:
- 5mA
- Current - Output / Channel:
- 31 mA
- Voltage - Supply Span (Min):
- 5 V
- Voltage - Supply Span (Max):
- 44 V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 10-UQFN (2.6x2.6)
LHV870LCX/NOPB FAQ
1.How can I place an order for LHV870LCX/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LHV870LCX/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 LHV870LCX/NOPB reliable?
The price and inventory of LHV870LCX/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LHV870LCX/NOPB is usually 5 days.
3.What payment methods are accepted for LHV870LCX/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LHV870LCX/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LHV870LCX/NOPB?
LHV870LCX/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LHV870LCX/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 LHV870LCX/NOPB?
For technical support, including LHV870LCX/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LHV870LCX/NOPB requirements.
6.How does Aetrix verify that LHV870LCX/NOPB is sourced from the original manufacturer or authorized distributors?
All LHV870LCX/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 LHV870LCX/NOPB meets industry standards.
7.What is the process for return or replacement of LHV870LCX/NOPB?
All LHV870LCX/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LHV870LCX/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 LHV870LCX/NOPB part is unused and in its original packaging.
Return procedure for LHV870LCX/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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