Datasheet

10
15
0 10 20 30 40 50 60 70
Noise Free Bits
Temperature, C
STG2=DIS, 5Hz BW (Note 1)
STG2=EN, 5Hz BW (Note 2)
STG2=DIS, 20Hz BW (Note 1)
STG2=EN, 20Hz BW (Note 2)
C051
PRF = 1200 Hz, Duty cycle = 10%
1) RF = 100K, Stage 2 & ambient cancellation disabled
2) RF = 500K, Stage 2 & ambient cancellation enabled with stage 2 gain = 4
±50
±40
±30
±20
±10
0
1 10 100
Attenuation, dB
Input signal frequency, Hz
5% Duty cycle
25% Duty cycle
C052
AFE4490
www.ti.com SBAS602F –DECEMBER 2012–REVISED OCTOBER 2013
TYPICAL CHARACTERISTICS (continued)
At T
A
= +25°C, RX_ANA_SUP = RX_DIG_SUP = 3.0 V, TX_CTRL_SUP = LED_DRV_SUP = 5 V, and f
CLK
= 8 MHz, unless
otherwise noted.
Figure 51. NOISE-FREE BITS vs TEMPERATURE Figure 52. FILTER RESPONSE vs DUTY CYCLE
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