AD9875–Typical Tx Digital Filter Performance Characteristics
10
0
–10
INTERPOLATION
FILTER
–20
–30
–40
INCLUDING SIN(X)/X
–50
–60
–70
–80
–90
–100
0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0
NORMALIZED – fs
TPC 1. 4؋ Low-Pass Interpolation Filter
10
0
–10
–20
INTERPOLATION
FILTER
–30
–40
INCLUDING SIN(X)/X
–50
–60
–70
–80
–90
–100
0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0
NORMALIZED – fS
TPC 4. 2؋ Bandpass Interpolation Filter, fS /2 Modulation,
Adjacent Image Preserved
10
0
INTERPOLATION
FILTER
–10
–20
–30
INCLUDING SIN(X)/X
–40
–50
–60
–70
–80
–90
–100
0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0
NORMALIZED – fS
TPC 2. 2؋ Low-Pass Interpolation Filter
10
0
INTERPOLATION
FILTER
–10
–20
–30
INCLUDING SIN(X)/X
–40
–50
–60
–70
–80
–90
–100
0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0
NORMALIZED – fS
TPC 5. 4؋ Bandpass Interpolation Filter, fS /4 Modulation,
Lower Image Preserved
10
0
INTERPOLATION
FILTER
–10
–20
–30
INCLUDING SIN(X)/X
–40
–50
–60
–70
–80
–90
–100
0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0
NORMALIZED – fS
TPC 3. 4؋ Bandpass Interpolation Filter, fS /2 Modulation,
Adjacent Image Preserved
10
INTERPOLATION INCLUDING SIN(X)/X
0
FILTER
–10
–20
–30
–40
–50
–60
–70
–80
–90
–100
0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0
NORMALIZED – fS
TPC 6. 4؋ Bandpass Interpolation Filter, fS /4 Modulation,
Upper Image Preserved
–8–
REV. 0