AD9874BST AD [Analog Devices], AD9874BST Datasheet - Page 5

• Manufacturer Part Number: AD9874BST
• Description: IF Digitizing Subsystem
• Manufacturer: AD [Analog Devices]

Pin
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
REV. 0
Mnemonic
MXOP
MXON
GNDF
IF2N
IF2P
VDDF
GCP
GCN
VDDA
GNDA
VREFP
VREFN
RREF
VDDQ
IOUTC
GNDQ
VDDC
GNDC
CLKP
CLKN
GNDS
GNDD
PC
PD
PE
VDDD
Description
Mixer Output, Positive
Mixer Output, Negative
Ground for Front End of ADC
Second IF Input (to ADC), Negative
Second IF Input (to ADC), Positive
Positive Power Supply for Front End of ADC
Filter Capacitor for ADC Full-Scale Control
Full-Scale Control Ground
Positive Power Supply for ADC Back End
Ground for ADC Back End
Voltage Reference, Positive
Voltage Reference, Negative
Reference Resistor: Requires 100 kΩ to
GNDA
Positive Power Supply for Clock Synthesizer
Clock Synthesizer Charge Pump Output
Current
Ground for Clock Synthesizer Charge
Pump
Positive Power Supply for Clock Synthesizer
Ground for Clock Synthesizer
Sampling Clock Input/Clock VCO Tank,
Positive
Sampling Clock Input/Clock VCO Tank,
Negative
Substrate Ground
Ground for Digital Functions
Clock Input for SPI Port
Data I/O for SPI Port
Enable Input for SPI Port
Positive Power Supply for Internal Digital
Functions
VREFN
VREFP
MXON
MXOP
VDDA
GNDA
GNDF
VDDF
IF2N
GCP
GCN
IF2P
PIN FUNCTION DESCRIPTIONS
10
11
12
1
2
3
4
5
6
7
8
9
13
48 47 46 45 44
PIN 1
IDENTIFIER
PIN CONFIGURATION
14
15
16
(Not to Scale)
17
AD9874
TOP VIEW
18
43
–5–
42
19
41
20 21 22 23 24
Pin
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
40
39 38 37
Mnemonic
VDDH
CLKOUT
DOUTA
DOUTB
FS
GNDH
SYNCB
GNDS
FREF
GNDL
GNDP
IOUTL
VDDP
VDDL
CXVM
LON
LOP
CXVL
GNDI
CXIF
IFIN
VDDI
36
35
34
33
32
31
30
29
28
27
26
25
GNDL
FREF
GNDS
SYNCB
GNDH
FS
DOUTB
DOUTA
CLKOUT
VDDH
VDDD
PE
Description
Positive Power Supply for Digital Interface
Clock Output for SSI Port
Data Output for SSI Port
Data Output for SSI Port (Inverted) or
SPI Port
Frame Sync for SSI Port
Ground for Digital Interface
Resets SSI and Decimator Counters;
Active Low
Substrate Ground
Reference Frequency Input for Both
Synthesizers
Ground for LO Synthesizer
Ground for LO Synthesizer Charge Pump
LO Synthesizer Charge Pump Output
Current Charge Pump
Positive Power Supply for LO Synthesizer
Charge Pump
Positive Power Supply for LO Synthesizer
External Filter Capacitor; DC Output of LNA
LO Input to Mixer and LO Synthesizer,
Negative
LO Input to Mixer and LO Synthesizer,
Positive
External Bypass Capacitor for LNA Power
Supply
Ground for Mixer and LNA
External Capacitor for Mixer V-I Converter
Bias
First IF Input (to LNA)
Positive Power Supply for LNA and Mixer
AD9874