LMH6521 Texas instruments

LMH6521

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LMH6521

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Описание

The LMH6521 contains two high performance, digitally controlled variable gain amplifiers (DVGA). Both channels of the LMH6521 have an independent, digitally controlled attenuator followed by a high linearity, differential output amplifier. Each block has been optimized for low distortion and maximum system design flexibility. Each channel has a high speed power down mode. The internal digitally controlled attenuator provides precise 0.5-dB gain steps over a 31.5-dB range. Serial and parallel programming options are provided. Serial mode programming uses the SPI interface. A pulse mode is also offered where simple up or down commands can change the gain one step at a time. The output amplifier has a differential output allowing 10-VPPD signal swings on a single 5-V supply. The low impedance output provides maximum flexibility when driving filters or analog to digital converters.

OIP3 of 48.5 dBm at 200 MHz
Maximum Voltage Gain of 26 dB
Gain Range: 31.5 dB with 0.5-dB Step Size
Channel Gain Matching of ±0.04 dB
Noise Figure: 7.3 dB at Maximum Gain
–3-dB Bandwidth of 1200 MHz
Low Power Dissipation
Independent Channel Power Down
Three Gain Control Modes:
- Parallel Interface
- Serial Interface (SPI)
- Pulse Mode Interface
Temperature Range: –40°C to +85°C
Thermally-Enhanced, 32-Pin WQFN Package

PGA/VGA	PGA
Number of channels	2
BW at Acl (MHz)	1400
Vs (max) (V)	5.25
Vs (min) (V)	4.75
Acl, min spec gain (V/V)	0.53
Gain (max) (dB)	26
Architecture	Fully Differential ADC Driver, VGA
Operating temperature range (°C)	-40 to 85
Features	Digital Gain Set, Shutdown
Rating	Catalog