F1240

The Renesas F1240 IF VGA featuring FlatNoise™ technology improves system SNR, especially at lower gain settings. By keeping both IP3O & NF flat while gain is backed off, the system SNR is improved significantly under high level interferer conditions, especially when considering alias noise in an IF sampling receiver. The fast-settling, parallel mode gain step of 0.50 dB coupled with the excellent differential non-linearity allow for SNR to be maximized further by targeting the minimum necessary gain in small, accurate increments. The matched output does not require a terminating resistor, thus the gain and distortion performance are preserved when driving Bandpass Anti-Alias filters.

• Ideal for systems with high SNR requirements
• 20 dB typical Maximum Gain
• 31 dB gain control range
• 6 bit control
• 0.50 dB Gain Steps
• Excellent Noise Figure ~ 4.0 dB
• 5mm x 5mm 32 pin package
• 200 ohm Differential Matched Input
• 200 ohm Differential Matched Output
• No termination resistor required
• NF degrades < 2dB @ 10 dB reduced gain
• 10 MHz – 500 MHz frequency range
• Ultra-Linear: IP3O +47 dBm typical
• Excellent 2nd Harmonic Rejection
• Parallel / Serial Control
• External current setting resistors
• Very fast settling < 15 nsec
• Individual Power Down Modes
• Extremely low power consumption:  79 mA / Ch