Low-Voltage Complex Filters Using Current Feedback Operational Amplifiers

Table 2

Performance post-layout simulation results of the filter in Figure 8.

Performance factor	ZigBee	Bluetooth
Power dissipation	5.6 mW	5.6 mW
Center frequency (𝑓𝑜)	1.9 MHz	920 kHz
Bandwidth (BW)	1.9 MHz	920 kHz
Group delay variation	0.5 μs	1 μs
INOISE	260 𝜇Vrms	260 𝜇Vrms
Image rejection ratio (IRR)	40 dB	41 dB
1st blocker Attenuation (𝑓𝑜+BW)	37 dBc	37 dBc
2nd blocker Attenuation (𝑓𝑜+2BW)	71.5 dBc	73.5 dBc
3rd blocker Attenuation (𝑓𝑜+3BW)	91 dBc	94.5 dBc
In-Band SFDR	44 dB	45 dB
	47.6 dB @ 4 & 6 MHz	50.2 dB @ 2 & 3 MHz
Out-of-Band SFDR	50.4 dB @ 6 & 10 MHz	52.8 dB @ 3 & 5 MHz
	51.7 dB @ 8 & 14 MHz	53.1 dB @ 4 & 7 MHz