Product details

Number of channels (#) 1 Total supply voltage (Min) (+5V=5, +/-5V=10) 2.7 Total supply voltage (Max) (+5V=5, +/-5V=10) 5.1 BW @ Acl (MHz) 620 Acl, min spec gain (V/V) 1 Slew rate (Typ) (V/us) 1500 Architecture Fully Differential ADC Driver Vn at flatband (Typ) (nV/rtHz) 2.2 Iq per channel (Typ) (mA) 10.1 Rail-to-rail In to V-, Out Vos (offset voltage @ 25 C) (Max) (mV) 0.45 Operating temperature range (C) -55 to 125 Approx. price (US$) 999 | 1ku Output current (Typ) (mA) 100 2nd harmonic (dBc) 140 3rd harmonic (dBc) 140 Frequency of harmonic distortion measurement (MHz) 0.1 GBW (Typ) (MHz) 850 Input bias current (Max) (pA) 13000000 Features Shutdown CMRR (Typ) (dB) 100 Rating Space
Number of channels (#) 1 Total supply voltage (Min) (+5V=5, +/-5V=10) 2.7 Total supply voltage (Max) (+5V=5, +/-5V=10) 5.1 BW @ Acl (MHz) 620 Acl, min spec gain (V/V) 1 Slew rate (Typ) (V/us) 1500 Architecture Fully Differential ADC Driver Vn at flatband (Typ) (nV/rtHz) 2.2 Iq per channel (Typ) (mA) 10.1 Rail-to-rail In to V-, Out Vos (offset voltage @ 25 C) (Max) (mV) 0.45 Operating temperature range (C) -55 to 125 Approx. price (US$) 999 | 1ku Output current (Typ) (mA) 100 2nd harmonic (dBc) 140 3rd harmonic (dBc) 140 Frequency of harmonic distortion measurement (MHz) 0.1 GBW (Typ) (MHz) 850 Input bias current (Max) (pA) 13000000 Features Shutdown CMRR (Typ) (dB) 100 Rating Space
VSSOP (DGK) 8 15 mm² 3 x 4.9
  • Radiation tolerant
    • TID assured for every wafer lot up to 30 krad (Si)
    • Single event latch-up (SEL) immune to LET = 43 MeV-cm2 /mg
    • Qualified over the military temperature range: .. –55°C to 125°C
  • Gain bandwidth product (GBWP): 850 MHz
  • Slew rate: 1300 V/µs
  • HD2, HD3: –118 dBc, –147 dBc (100 kHz, 2 VPP)
  • Input voltage noise: 2.4 nV/√Hz
  • Low offset drift: ±0.5 µV/°C (typical)
  • Negative rail input (NRI), rail-to-rail output (RRO)
  • Power supply:
    • Supply voltage range: 2.7 V to 5.4 V
    • Quiescent current: 10.1 mA
    • Power-down capability: 2 µA (typical)
  • Radiation tolerant
    • TID assured for every wafer lot up to 30 krad (Si)
    • Single event latch-up (SEL) immune to LET = 43 MeV-cm2 /mg
    • Qualified over the military temperature range: .. –55°C to 125°C
  • Gain bandwidth product (GBWP): 850 MHz
  • Slew rate: 1300 V/µs
  • HD2, HD3: –118 dBc, –147 dBc (100 kHz, 2 VPP)
  • Input voltage noise: 2.4 nV/√Hz
  • Low offset drift: ±0.5 µV/°C (typical)
  • Negative rail input (NRI), rail-to-rail output (RRO)
  • Power supply:
    • Supply voltage range: 2.7 V to 5.4 V
    • Quiescent current: 10.1 mA
    • Power-down capability: 2 µA (typical)

The LMH5485-SEP is a radiation tolerant, low-power, voltage-feedback, fully differential amplifier (FDA). This part is able to achieve a high gain bandwidth product (GBWP) of 850-MHz, allowing it to maintain excellent distortion performance over a wide range of frequencies as shown in the following figure. This wide bandwidth range is also achieved with a relatively low power consumption of 10.1-mA and broadband voltage noise of 2.4nV/√Hz. This combination of power consumption, bandwidth and noise allows the LMH5485-SEP to be well suited for power sensitive data acquisition systems with frequencies >10 MHz that require both the best signal-to-noise ratio (SNR) and spurious-free dynamic range (SFDR).

The LMH5485-SEP features the negative-rail input required when interfacing with a DC-coupled, ground-centered, source signal. This negative-rail input, with a rail-to-rail output, allows for easy interface between single-ended, ground-referenced, bipolar signal sources and a wide variety of successive approximation register (SAR), delta-sigma (ΔΣ), or pipeline ADCs using only a single 2.7 V to 5.4 V power supply. This device also features a low offset voltage drift of ±0.5 µV/°C, allowing it to maintain excellent DC performance over it’s wide temperature range of –55°C to +125°C.

The LMH5485-SEP is a radiation tolerant, low-power, voltage-feedback, fully differential amplifier (FDA). This part is able to achieve a high gain bandwidth product (GBWP) of 850-MHz, allowing it to maintain excellent distortion performance over a wide range of frequencies as shown in the following figure. This wide bandwidth range is also achieved with a relatively low power consumption of 10.1-mA and broadband voltage noise of 2.4nV/√Hz. This combination of power consumption, bandwidth and noise allows the LMH5485-SEP to be well suited for power sensitive data acquisition systems with frequencies >10 MHz that require both the best signal-to-noise ratio (SNR) and spurious-free dynamic range (SFDR).

The LMH5485-SEP features the negative-rail input required when interfacing with a DC-coupled, ground-centered, source signal. This negative-rail input, with a rail-to-rail output, allows for easy interface between single-ended, ground-referenced, bipolar signal sources and a wide variety of successive approximation register (SAR), delta-sigma (ΔΣ), or pipeline ADCs using only a single 2.7 V to 5.4 V power supply. This device also features a low offset voltage drift of ±0.5 µV/°C, allowing it to maintain excellent DC performance over it’s wide temperature range of –55°C to +125°C.

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Technical documentation

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* Data sheet LMH5485-SEP Radiation Tolerant, Negative Rail Input, Rail-to-Rail Output, Precision, 850 MHz Fully Differential Amplifier datasheet (Rev. A) PDF | HTML 22 Nov 2022
* Radiation & reliability report LMH5485-SEP Production Flow and Reliability Report PDF | HTML 12 Dec 2022
Technical article How Space-Enhanced Plastic devices address challenges in low-Earth orbit applications 19 Sep 2022
Application note Analog Front-End Design With Texas Instruments’ Tooling Landscape PDF | HTML 07 Mar 2022
Technical article How to minimize filter loss when you drive an ADC 20 Oct 2016
Technical article Go differential to differentiate your precision design 11 Aug 2016
Technical article How to use a fully differential amplifier as a level shifter 13 Jul 2016

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Evaluation board

DEM-FDA-DGK-EVM — Unpopulated evaluation module for fully differential amplifiers in the DGK (HVSSOP) package

The DEM-FDA-DGK-EVM is an unpopulated evaluation module (EVM) for fully differential amplifiers (FDA) in the DGK (HVSSOP) package. This EVM is designed in accordance with high-speed performance specifications and Texas Instruments FDAs with output common mode (Vocm) control and power down (PD) (...)
User guide: PDF | HTML
Not available on TI.com
Evaluation board

DEM-FDA-DGN-EVM — Evaluation module for fully differential amplifiers in the DGN package

The DEM-FDA-DGN-EVM is an unpopulated evaluation module (EVM) for fully differential amplifiers (FDA) in the DGN (HVSSOP) package. The EVM is designed to enable quick and efficient lab testing of the high-speed FDAs using 50-Ω SMA connectors for use with lab equipment. The schematic (...)

User guide: PDF
Not available on TI.com
Evaluation board

DEM-FDA-SOIC-EVM — Evaluation module for fully differential amplifiers in SOIC packages

The DEM-FDA-SOIC-EVM is an unpopulated evaluation module (EVM) for fully differential amplifiers (FDA) in the D (SOIC) package. The EVM is designed to enable quick and efficient lab testing of the high-speed FDAs using 50-Ω SMA connectors for use with lab equipment. The schematic (...)

User guide: PDF | HTML
Not available on TI.com
Simulation model

LMH5485-SEP PSpice Model

SBOMC07.ZIP (28 KB) - PSpice Model
Simulation model

LMH5485-SEP TINA-TI Model

SBOMC08.TSC (82 KB) - TINA-TI Spice Model
Simulation tool

PSPICE-FOR-TI — PSpice® for TI design and simulation tool

PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
Simulation tool

TINA-TI — SPICE-based analog simulation program

TINA-TI provides all the conventional DC, transient and frequency domain analysis of SPICE and much more. TINA has extensive post-processing capability that allows you to format results the way you want them. Virtual instruments allow you to select input waveforms and probe circuit nodes voltages (...)
User guide: PDF
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