AD8375 Ultralow Distortion IF VGA _ BDTIC a Leading Distributor in China

AD8375 Ultralow Distortion IF VGA

The AD8375 is a digitally controlled, variable gain, wide bandwidth amplifier that provides precise gain control, high IP3, and low noise figure. The excellent distortion performance and high signal bandwidth make the AD8375 an excellent gain control device for a variety of receiver applications. Using an advanced high speed SiGe process and incorporating proprietary distortion cancellation techniques, the AD8375 achieves 50 dBm output IP3 at 200 MHz.

The AD8375 provides a broad 24 dB gain range with 1 dB resolution. The gain is adjusted through a 5-pin control interface and can be driven using standard TTL levels. The open-collector outputs provide a flexible interface, allowing the overall signal gain to be set by the loading impedance. Thus, the signal voltage gain is directly proportional to the load.

The AD8375 is powered on by applying the appropriate logic level to the PWUP pin. The quiescent current of the AD8375 is typically 130 mA. When powered down, the AD8375 consumes less than 5 mA and offers excellent input-to-output isolation.

Fabricated on an Analog Devices, Inc., high speed SiGe process, the AD8375 is supplied in a compact, thermally enhanced, 4 mm × 4 mm, 24-lead LFCSP package and operates over the temperature range of −40°C to +85°C.

Applications

Differential ADC drivers
High IF sampling receivers
Wideband multichannel receivers
Instrumentation

Data Sheet, Rev. 0, 8/07

Features and Benefits

Bandwidth of 630 MHz (−3 dB)

Gain range: −4 dB to +20 dB

Step size: 1 dB ± 0.2 dB

Differential input and output

Noise figure: 8 dB @ maximum gain

Output IP3 of ~50 dBm at 200 MHz

Output P1dB of 19 dBm at 200 MHz

Provides constant SFDR vs. gain

Parallel 5-bit control interface

Power-down feature

Single 5 V supply operation

24-lead, 4 mm × 4 mm LFCSP

RF & Microwave

Data Sheets

Document	note
AD8375: Ultralow Distortion IF VGA Data Sheet (Rev. A)	PDF 785 kB

Application Notes

Document	note
AN-1098: Methodology for Narrow-Band Interface Design Between High Performance Differential Driver Amplifiers and ADCs (Rev. 0)	PDF 167 kB

Frequently Asked Questions

Document	note

Order Information

Part Number	Package	Packing Qty	Temp Range	Price 100-499	Price 1000+	RoHS
AD8375ACPZ-R7 Production	24 ld LFCSP (4x4mm w/2.10mm EP)	REEL 1500	-40 to 85C	0	4.54	Y
AD8375ACPZ-WP Production	24 ld LFCSP (4x4mm w/2.10mm EP)	REEL 64	-40 to 85C	5.22	4.54	Y