
REV. 0
–10–
AD9874
(VDDI = VDDF = VDDA = VDDC = VDDL = VDDD = VDDH = VDDx, VDDQ = VDDP = 5.0 V, f
CLK
= 18 MSPS, f
IF
= 109.56 MHz, f
LO
= 107.4 MHz,
T
A
= 25 C, LO = –5 dBm, LO and CLK Synthesizer Disabled, 16-Bit Data with AGC and DVGA enabled, unless otherwise noted.)
1
CHANNEL BANDWIDTH – kHz
N
10.0
10
7.5
1000
100
9.5
9.0
8.5
8.0
I24-BIT
I/16-BIT
I/16-BIT
TPC 10a. Noise Figure vs. BW (Mini-
mum Attenuation, f
CLK
= 13 MSPS)
VGA ATTENUATION – dB
N
11.5
0
7.0
12
6
9
3
11.0
10.5
10.0
9.5
9.0
8.5
8.0
7.5
BW = 6.78kHz
(K = 0, M = 8)
BW = 27.08kHz
(K = 0, M = 3)
TPC 11a. Noise Figure vs. VGA
Attenuation (f
CLK
= 13 MSPS)
IFIN – dBm
I
–45
–130
–30
–40
–50
–60
–70
–80
–90
–100
–110
–120
–42
–39
–36
–33
–30
–27
–24
LOW BIAS
PIN
HIGH BIAS
P
–5
–30
–10
–15
–20
–25
–40
–35
–45
TPC 12a. IMD vs. IFIN (f
CLK
= 13 MSPS)
CHANNEL BANDWIDTH – kHz
N
10.0
10
7.5
1000
100
9.5
9.0
8.5
8.0
24-BIT DATA
16-BIT DATA
1w/ DVGA
ENABLED
TPC 10b. Noise Figure vs. BW (Mini-
mum Attenuation, f
CLK
= 18 MSPS)
VGA ATTENUATION – dB
N
14
0
7
12
6
9
3
13
12
11
10
9
8
BW = 15kHz
(K = 0, M = 9)
BW = 50kHz
BW = 75kHz
TPC 11b. Noise Figure vs. VGA
Attenuation (f
CLK
= 18 MSPS)
IFIN – dBm
I
–45
–130
–30
–40
–50
–60
–70
–80
–90
–100
–110
–120
–42
–39
–36
–33
–30
–27
–24
LOW BIAS
PIN
HIGH BIAS
P
–5
–30
–10
–15
–20
–25
–40
–35
–45
TPC 12b. IMD vs. IFIN (f
CLK
= 18 MSPS)
CHANNEL BANDWIDTH – kHz
N
10.0
10
7.5
1000
100
9.5
9.0
8.5
8.0
24-BIT DATA
16-BIT DATA
1w/ DVGA
ENABLED
TPC 10c. Noise Figure vs. BW (Mini-
mum Attenuation, f
CLK
= 26 MSPS)
VGA ATTENUATION – dB
N
14
0
7
12
6
9
3
13
12
11
10
9
8
BW = 27.08kHz
(K = 1, M = 9)
(K = 1, M = 2)
B(K = 1, M = 1)
TPC 11c. Noise Figure vs. VGA
Attenuation (f
CLK
= 26 MSPS)
IFIN – dBm
I
–45
–130
–30
–40
–50
–60
–70
–80
–90
–100
–110
–120
–42
–39
–36
–33
–30
–27
–24
LOW BIAS
PIN
HIGH BIAS
P
–5
–30
–10
–15
–20
–25
–40
–35
–45
TPC 12c. IMD vs. IFIN (f
CLK
= 26 MSPS)
1
Data taken with Toko FSLM series 10
μ
H inductors
2
High Bias corresponds to LNA_Mixer Setting of 33 in SPI Register 0x01
3
Low Bias corresponds to LNA_Mixer Setting of 12 in SPI Register 0x01