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Texas Instruments LMH6882SQE/NOPB
- Part No.:
- LMH6882SQE/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 36-WFQFN Exposed Pad
- Datasheet:
-
LMH6882SQE/NOPB.pdf
- Description:
- IC OPAMP DIFF 2 CIRCUIT 36WQFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,184
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Product details
Overview
LMH6882SQE/NOPB from Texas Instruments is a DC–2.4-GHz dual programmable differential amplifier optimized for RF/IF signal conditioning in microwave backhaul, zero-IF and I/Q sampling systems. It delivers 26 dB to 6 dB voltage gain in 0.25-dB steps, 42 dBm OIP3 at 100 MHz, 9.7 dB noise figure, and 100 Ω differential input impedance - enabling direct interface with mixers and filters without external gain-setting components.
For engineers reviewing the LMH6882SQE/NOPB datasheet, LMH6882SQE/NOPB pinout, LMH6882SQE/NOPB application, or LMH6882SQE/NOPB equivalent, key selection criteria include its dual-channel programmable gain architecture, SPI/parallel digital control, thermal performance in the 6 mm × 6 mm WQFN package, and verified linearity across gain settings up to 2.4 GHz.
Technical Context
The LMH6882SQE/NOPB integrates three functional stages per channel: a low-noise amplifier, a digitally controlled attenuator, and a low-distortion output driver. Its architecture supports both differential (100 Ω) and single-ended (50 Ω) inputs, with independent OCM pins (OCMA/OCMB) setting output common-mode voltage via 2× gain scaling (e.g., 1.25 V → 2.5 V).
Gain control operates in two mutually exclusive modes: parallel mode (7-bit D0–D6 bus, 0.25-dB resolution, simultaneous update) and SPI-compatible serial mode (CS/CLK/SDI/SDO, 0.25-dB steps, independent channel programming). Power-down is supported via SD pin (parallel mode) or register write (SPI mode), reducing supply current from 270 mA to 25 mA.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Small Signal Bandwidth | 2.4 GHz - supports wideband RF/IF signal paths up to microwave frequencies without gain roll-off. |
| OIP3 @ 100 MHz | 42 dBm - enables high dynamic range in dense spectral environments like cellular base stations and microwave radios. |
| Voltage Gain Range | 6 dB to 26 dB - digitally programmable over 20 dB range with 0.25-dB step resolution for precise AGC implementation. |
| Noise Figure | 9.7 dB - maintains low system noise floor when driving ADCs in receiver front-ends with 100 Ω source impedance. |
| Input Impedance | 100 Ω differential / 50 Ω single-ended - eliminates external matching networks when interfacing with mixers, SAW filters, or 50-Ω sources. |
| Supply Voltage | 4.75 V to 5.25 V - compatible with standard 5-V analog rails; supports stable operation across industrial temperature range (−40°C to +85°C). |
| Channel Matching | 0.2 dB gain / 1.5° phase - ensures accurate I/Q signal integrity in quadrature sampling applications without calibration. |
Pinout & Package
The LMH6882SQE/NOPB is housed in a thermally enhanced 36-pin WQFN package (6.00 mm × 6.00 mm) with exposed center pad bonded to ground for optimal thermal dissipation (RθJC(bot) = 3.5 °C/W). Pin functions are validated per TI SNOSC84D Rev D datasheet.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| INPDA, INMDA, INPSA, INMSA | Analog Input (Ch A) | Differential (100 Ω) or single-ended (50 Ω) inputs; unused input must be terminated to match impedance. |
| INPDB, INMDB, INPSB, INMSB | Analog Input (Ch B) | Independent dual-channel inputs enable simultaneous I/Q or diversity path processing. |
| OUTPA, OUTMA, OUTPB, OUTMB | Analog Output | Low-impedance differential outputs (0.4 Ω) drive 200-Ω loads directly; support AC/DC coupling. |
| OCMA, OCMB | Output Common-Mode Control | 2× gain scaling sets output DC bias (e.g., 1.25 V → 2.5 V); critical for ADC interface level alignment. |
| D0–D6, SD, SPI | Digital Control | Parallel gain/enable control (SPI = LOW); SPI mode (SPI = HIGH) enables CS/CLK/SDI/SDO for serial programming. |
| VCC (pins 3,4,24,25) | Power Supply | Four dedicated 4.75–5.25 V supply pins minimize IR drop and improve PSRR in high-speed operation. |
| GND (pins 5,6,22,23) | Ground | Four low-inductance ground connections and exposed thermal pad ensure stable reference and thermal management. |
Key Features
| Feature | Design Value |
|---|---|
| Dual-channel programmability | Independent gain control per channel in SPI mode; synchronized gain update in parallel mode - eliminates inter-channel crosstalk in I/Q systems. |
| DC-coupled signal path | Full DC–2.4 GHz operation with self-biased input common-mode (2.5 V) - supports baseband, IF, and RF gain blocks without AC coupling constraints. |
| Thermal-enhanced WQFN | 36-pin 6 mm × 6 mm package with exposed thermal pad (RθJA = 33.6 °C/W) - sustains 1 W power dissipation at +85°C ambient without derating. |
| 0.25-dB gain resolution | 7-bit digital attenuation with ±0.125 dB step error - enables fine-grained automatic gain control for dynamic signal environments. |
| Low distortion at all gains | OIP3 ≥ 40 dBm across full 6–26 dB range (100–200 MHz); HD3 ≤ −76 dBc at 200 MHz - preserves signal fidelity in multi-tone LTE/5G waveforms. |
Applications
| Microwave Backhaul Radio Receiver | Zero-IF Sampling System |
|---|---|
|
Use Scenario: Amplifying downconverted 1–3 GHz IF signals from microwave transceivers prior to digitization. IC Role / Device Role / Timing Role: Dual-channel differential gain block providing matched I/Q amplification with programmable gain to maintain SNR across varying link budgets. Use Value: 42 dBm OIP3 and 0.2 dB channel gain matching prevent intermodulation distortion and image rejection degradation in high-order QAM demodulation. |
Use Scenario: Conditioning baseband I/Q signals from quadrature demodulators before ADC sampling in software-defined radios. IC Role / Device Role / Timing Role: DC-coupled differential amplifier with independent OCM control to align I/Q common-mode levels with ADC input requirements. Use Value: 9.7 dB noise figure and 2.4 GHz bandwidth preserve EVM in 100+ MHz bandwidth signals; 1.5° phase matching minimizes quadrature error. |
| In-Phase/Quadrature (I/Q) Sampling | RF/IF Gain Block in Medical Imaging |
|
Use Scenario: Driving high-speed ADCs in ultrasound beamformers requiring precise amplitude and phase coherence between I and Q paths. IC Role / Device Role / Timing Role: Dual-channel programmable amplifier with simultaneous gain update and sub-degree phase matching for coherent signal synthesis. Use Value: 0.2 dB gain matching and 1.5° phase matching reduce IQ imbalance-induced artifacts; 20 ns gain switching time supports real-time AGC loops. |
Use Scenario: Amplifying low-level RF echoes from MRI or PET detector arrays before digitization and digital beamforming. IC Role / Device Role / Timing Role: High-linearity, low-noise gain stage operating from DC to 2.4 GHz to preserve weak signal integrity in time-domain imaging. Use Value: 42 dBm OIP3 prevents harmonic folding in wideband echo reception; 100 Ω input simplifies interface with detector front-end transformers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar programmable differential amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LMH6881SQE/NOPB | Single-channel version in identical 36-pin WQFN package; same gain range, bandwidth, and OIP3 specs. | Used where only one signal path requires programmable gain; no channel-to-channel matching requirement. | Select LMH6881SQE/NOPB for cost-sensitive single-path designs; LMH6882SQE/NOPB required for I/Q or dual-path systems. |
| ADL5562ACPZ-R7 | Fixed-gain (16 dB) differential amplifier; 3.3 V supply; 6.5 GHz bandwidth; 24 dBm OIP3 at 100 MHz. | Suitable for fixed-gain, higher-frequency applications where programmability is not needed and lower OIP3 is acceptable. | Choose ADL5562ACPZ-R7 for ultra-wideband fixed-gain paths; LMH6882SQE/NOPB preferred when gain adaptability and superior linearity are critical. |
Compared with LMH6881SQE/NOPB, the LMH6882SQE/NOPB adds second channel with matched performance for I/Q systems; compared with ADL5562ACPZ-R7, it trades bandwidth for 18 dB higher OIP3 and full digital gain control - making it optimal for high-dynamic-range, adaptive RF receivers.
Availability
LMH6882SQE/NOPB is available at Aetrix Electronics and suitable for microwave backhaul radio receivers, zero-IF sampling systems, and medical imaging equipment requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for LMH6882SQE/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, embedded processing, and high-performance signal chain solutions for industrial, communications, and automotive markets.
The LMH6882SQE/NOPB belongs to TI's high-linearity RF amplifier product line, designed specifically for programmable gain applications in microwave, wireless infrastructure, and precision instrumentation where DC-coupled, dual-channel signal conditioning is required.
FAQ
What is the maximum operating frequency of the LMH6882SQE/NOPB?
The LMH6882SQE/NOPB has a small-signal bandwidth of 2.4 GHz, verified per TI SNOSC84D datasheet Section 6.5. This allows full gain-bandwidth operation up to 2.4 GHz with minimal roll-off, making it suitable for microwave IF and direct RF sampling applications where signal integrity beyond 1 GHz is critical. The LMH6882SQE/NOPB maintains specified OIP3 and noise figure performance across this entire range.
Does the LMH6882SQE/NOPB support both differential and single-ended inputs?
Yes, the LMH6882SQE/NOPB supports both configurations per channel: differential inputs (INPDA/INMDA and INPDB/INMDB) with 100 Ω impedance, and single-ended inputs (INPSA/INMSA and INPSB/INMSB) with 50 Ω termination on the unused input. This flexibility eliminates external matching networks when interfacing with mixers, filters, or 50-Ω test equipment - a capability confirmed in Section 5 and Figure 39–40 of the LMH6882SQE/NOPB datasheet.
How does gain control work on the LMH6882SQE/NOPB?
The LMH6882SQE/NOPB supports two independent gain control modes: parallel (7-bit D0–D6 bus, SPI pin LOW) for fastest update (<20 ns), and SPI-compatible serial (CS/CLK/SDI/SDO, SPI pin HIGH) for 0.25-dB resolution and per-channel programming. In parallel mode, both channels share the same gain code; in SPI mode, each channel can be set independently. This dual-mode architecture is fully documented in Sections 7.4 and 7.5 of the LMH6882SQE/NOPB datasheet.
What is the purpose of the OCM pins on the LMH6882SQE/NOPB?
The OCMA and OCMB pins on the LMH6882SQE/NOPB set the output common-mode voltage with 2× gain scaling - applying 1.25 V yields 2.5 V at the differential outputs. This feature enables precise DC bias alignment with downstream ADCs or analog processors without external level-shifting circuitry. The function is defined in Section 5 (Pin Functions) and Figure 39–40 of the LMH6882SQE/NOPB datasheet, and is essential for DC-coupled I/Q signal chains.
Is the LMH6882SQE/NOPB pin-compatible with any other TI devices?
The LMH6882SQE/NOPB shares the identical 36-pin WQFN (NJK) package and pinout with the single-channel LMH6881SQE/NOPB, enabling PCB reuse in designs where channel count changes. However, no pin-compatible alternatives exist outside TI's LMH68xx family. This mechanical compatibility is explicitly stated in the "Device Information" table (page 2) and "Mechanical, Packaging, and Orderable Information" section (page 32) of the LMH6882SQE/NOPB datasheet.
LMH6882SQE/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- LMH®
- Package/Case:
- 36-WFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- Programmable Gain, Differential
- Number of Circuits:
- 2
- Output Type:
- Differential
- Slew Rate:
- 6000V/µs
- Gain Bandwidth Product:
- -
- -3db Bandwidth:
- 2.4 GHz
- Current - Input Bias:
- -
- Voltage - Input Offset:
- -
- Current - Supply:
- 200mA
- Current - Output / Channel:
- -
- Voltage - Supply Span (Min):
- 4.75 V
- Voltage - Supply Span (Max):
- 5.25 V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 36-WQFN (6x6)
LMH6882SQE/NOPB FAQ
1.How can I place an order for LMH6882SQE/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LMH6882SQE/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 LMH6882SQE/NOPB reliable?
The price and inventory of LMH6882SQE/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMH6882SQE/NOPB is usually 5 days.
3.What payment methods are accepted for LMH6882SQE/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMH6882SQE/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMH6882SQE/NOPB?
LMH6882SQE/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMH6882SQE/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 LMH6882SQE/NOPB?
For technical support, including LMH6882SQE/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMH6882SQE/NOPB requirements.
6.How does Aetrix verify that LMH6882SQE/NOPB is sourced from the original manufacturer or authorized distributors?
All LMH6882SQE/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 LMH6882SQE/NOPB meets industry standards.
7.What is the process for return or replacement of LMH6882SQE/NOPB?
All LMH6882SQE/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LMH6882SQE/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 LMH6882SQE/NOPB part is unused and in its original packaging.
Return procedure for LMH6882SQE/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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