4.5 GHz ultra wideband digital variable gain amplifier
Product details
Parameters
Package | Pins | Size
Features
- 3-dB Bandwidth: 4.5 GHz at 26-dB Gain
- Gain Range: –6 dB to 26 dB in 1-dB Steps
- Differential Input Impedance: 100 Ω
- Differential Output with Common-Mode Control
- Distortion at Max Gain (VO = 2 VPPD, RL = 200 Ω):
- 200 MHz: HD2 at –73 dBc, HD3 at –80 dBc
- 500 MHz: HD2 at –68 dBc, HD3 at –72 dBc
- 1 GHz: HD2 at –63 dBc, HD3 at –63 dBc
- 2 GHz: HD2 at –58 dBc, HD3 at –54 dBc
- Output IP3:
- 43 dBm at 200 MHz
- 33 dBm at 1 GHz
- 27 dBm at 2 GHz
- Output IP2:
- 67 dBm at 200 MHz
- 60 dBm at 1 GHz
- 52 dBm at 2 GHz
- 8-dB Noise Figure at 1 GHz, RS = 100 Ω
- 82-ps Rise, Fall Time Pulse Response
- Supply Operation: 5.0 V at 69 mA
- Supports Single- and (±) Split-Supply Operation:
- DC- and AC-Coupled Applications
- Fabricated on an Advanced Complementary BiCMOS Process
- 3-mm × 3-mm UQFN-16 Package
Description
The LMH6401 is a wideband, digitally-controlled, variable-gain amplifier (DVGA) designed for dc to radio frequency (RF), intermediate frequency (IF), and high-speed time-domain applications. The device is an ideal analog-to-digital converter (ADC) driver for dc- or ac-coupled applications that require an automatic gain control (AGC).
Noise and distortion performance is optimized to drive ultra-wideband ADCs. The amplifier has an 8-dB noise figure at maximum gain and a –63-dBc harmonic distortion at 1 GHz for full-scale signal levels. The device supports both single- and split-supply operation for driving an ADC. A common-mode reference input pin is provided to align the amplifier output common-mode with the ADC input requirements.
Gain control is performed via an SPI™ interface, allowing a 32-dB gain range from –6 dB to 26 dB in 1-dB steps. A power-down feature is also available through the external PD pin or SPI control.
This level of performance is achieved at a low power level of 345 mW. The operating ambient temperature range is –40°C to 85°C.
Technical documentation
Type | Title | Date | |
---|---|---|---|
* | Datasheet | LMH6401 DC to 4.5 GHz, Fully-Differential, Digital Variable-Gain Amplifier datasheet (Rev. A) | May 19, 2015 |
E-book | The Signal e-book: A compendium of blog posts on op amp design topics | Mar. 28, 2017 | |
Selection guide | TI Components for Aerospace and Defense Guide (Rev. E) | Mar. 22, 2017 | |
Application note | ADC32RF45: Amplifier to ADC Interface (Rev. A) | Sep. 07, 2016 | |
Technical articles | Disentangle RF amplifier specs: output voltage/current and 1dB compression point | Jun. 09, 2016 | |
Technical articles | Disentangle RF amplifier specs: intermodulation distortion and intercept points | Apr. 19, 2016 | |
Technical articles | Disentangling RF amplifier specs: amplifier spot noise vs. noise figure | Feb. 05, 2016 | |
User guide | TSW54J60 Evaluation Module User's Guide (Rev. A) | Sep. 21, 2015 | |
User guide | LMH6401 EVM User's Guide (Rev. A) | May 29, 2015 |
Design & development
For additional terms or required resources, click any title below to view the detail page where available.Hardware development
Description
The LMH6401 Evaluation module (EVM) is used to evaluate the single LMH6401, digitally-controlled variable-gain amplifier (DVGA) in a 16-lead high-performance RF package. The EVM is designed to quickly and easily demonstrate the functionality and performance of LMH6401 across all the gain (...)
Features
- Configured for split-supply operation and easily modified for single supply.
- Designed for DC- or AC-coupled differential input and output connection.
- Simple interface to the inputs and outputs through SMA connectors.
- USB connector and FTDI USB-to-SPI bus-translator chip to successfully program the DVGA (...)
Software development
Design tools & simulation
Reference designs
Design files
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download TIDA-010128 Assembly Drawing.pdf (2981KB) -
download TIDA-010128 PCB.pdf (28701KB) -
download TIDA-010128 CAD Files.zip (37212KB) -
download TIDA-010128 Gerber.zip (13521KB) -
download TIDA-01028 & TIDA-010128 BOM (Rev. A).pdf (240KB)
Design files
-
download TIDA-010122 BOM.pdf (240KB) -
download TIDA-010122 Assembly Drawing.pdf (2983KB) -
download TIDA-010122 PCB.pdf (28658KB) -
download TIDA-010122 CAD Files.zip (74323KB) -
download TIDA-010122 Gerber.zip (13521KB)
Design files
-
download TIDA-01028 Assembly Drawing.pdf (2940KB) -
download TIDA-01028 PCB.pdf (28699KB) -
download TIDA-01028 CAD Files.zip (41928KB) -
download TIDA-01028 Gerber.zip (13521KB) -
download TIDA-01028 & TIDA-010128 BOM (Rev. A).pdf (240KB)
Design files
-
download TIDA-01022 BOM.pdf (132KB) -
download TIDA-01022 Assembly Drawing.pdf (3076KB) -
download TIDA-01022 Layer Plots.zip (14285KB) -
download TIDA-01022 CAD Files.zip (69995KB) -
download TIDA-01022 Gerber.zip (7572KB)
Design files
-
download TIDA-00823 BOM.pdf (252KB) -
download TIDA-00823 Assembly Drawing.pdf (90KB) -
download TIDA-00823 PCB Layout.pdf (1072KB) -
download TIDA-00823 CAD Files.zip (2855KB) -
download TIDA-00823 Gerber.zip (288KB)
Design files
-
download TIDA-00826 Gerber.zip (1121KB) -
download TIDA-00826 BOM.pdf (283KB) -
download TIDA-00826 PCB.pdf (28400KB)
Design files
-
download TIDA-00822 BOM.pdf (218KB) -
download TIDA-00822 Assembly Drawing.pdf (92KB) -
download TIDA-00822 PCB.pdf (1075KB) -
download TIDA-00822 CAD Files.zip (2828KB) -
download TIDA-00822 Gerber.zip (262KB)
Design files
-
download TIDA-00654 BOM.pdf (116KB) -
download TIDA-00654 PCB.pdf (1730KB) -
download TIDA-00654 Gerber.zip (933KB)
CAD/CAE symbols
Package | Pins | Download |
---|---|---|
UQFN-HR (RMZ) | 16 | View options |
Ordering & quality
- RoHS
- REACH
- Device marking
- Lead finish/Ball material
- MSL rating/Peak reflow
- MTBF/FIT estimates
- Material content
- Qualification summary
- Ongoing reliability monitoring
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