LMH3401 Texas instruments

LMH3401

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LMH3401

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Описание

The LMH3401 is a very high-performance, differential amplifier optimized for radio frequency (RF), intermediate frequency (IF), or high-speed, time-domain applications. This device is ideal for dc- or ac-coupled applications that require a single-ended to differential conversion when driving an analog-to-digital converter (ADC). The LMH3401 generates very low levels of second-order and third-order distortion when operating in single-ended-input to differential-output or differential-input to differential-output mode. The on-chip resistors simplify printed circuit board (PCB) implementation and provide the highest performance over the usable bandwidth of 2 GHz. This performance makes the LMH3401 ideal for applications such as test and measurement, broadband communications, and high-speed data acquisition. A common-mode reference input pin is provided to align the amplifier output common-mode with the ADC input requirements. Use this device with power supplies between 3.3 V and 5.0 V; dual-supply operation is supported when required by the application. This level of performance is achieved at a very low power level of 275 mW when a 5.0-V supply is used. A power-down feature is also available for power savings. The LMH3401 is fabricated in Texas Instruments' advanced complementary BiCMOS process and is available in a space-saving, 14-lead UQFN package with a specified operating temperature range of –40°C to 85°C.

Excellent Single-Ended to Differential Conversion Performance from DC to 2 GHz
7-GHz, –3-dB Bandwidth
Excellent HD2 and HD3 to 2 GHz:
- –96 (HD2), –102 (HD3) at 10 MHz
- –79 (HD2), –77 (HD3) at 500 MHz
- –64 (HD2), –72 (HD3) at 1 GHz
- –55 (HD2), –40 (HD3) at 2 GHz
Best in Class OIP₃ Performance to 2 GHz:
- 45 dBm at 200 MHz
- 33 dBm at 1 GHz
- 24 dBm at 2 GHz
Fixed Single-Ended to Differential Voltage Gain: 16 dB
Noise Figure: 9 dB at 200 MHz (R_S = 50 Ω)
Slew Rate: 18,000 V/µs
Supports Single-Supply or Split-Supply Operation
Powered-Down Feature
Supply Current: 55 mA

Number of channels	1
Total supply voltage (+5 V = 5, ±5 V = 10) (min) (V)	3.15
Total supply voltage (+5 V = 5, ±5 V = 10) (max) (V)	5
BW at Acl (MHz)	7000
Acl, min spec gain (V/V)	6.3
Slew rate (typ) (V/µs)	18000
Architecture	Bipolar, Fixed Gain/Buffer, Fully Differential ADC Driver
Vn at flatband (typ) (nV√Hz)	1.4
Iq per channel (typ) (mA)	55
Rail-to-rail	No
Vos (offset voltage at 25°C) (max) (mV)	3.2
Operating temperature range (°C)	-40 to 85
Iout (typ) (mA)	50
2nd harmonic (dBc)	96
3rd harmonic (dBc)	102
Frequency of harmonic distortion measurement (MHz)	10
GBW (typ) (MHz)	8000
Input bias current (max) (pA)	10000000
Features	On chip gain resistors, Shutdown
CMRR (typ) (dB)	72
Rating	Catalog