參數(shù)資料
型號: AD9856AST
廠商: ANALOG DEVICES INC
元件分類: 通信及網(wǎng)絡(luò)
英文描述: CMOS 200 MHz Quadrature Digital Upconverter
中文描述: SPECIALTY TELECOM CIRCUIT, PQFP48
封裝: LQFP-48
文件頁數(shù): 4/32頁
文件大小: 429K
代理商: AD9856AST
AD9856
–4–
REV. B
Pin #
Pin Name
Pin Function
1
TxENABLE
Input Pulse that Synchronizes
the Data Stream
Input Data (Most Significant Bit)
Input Data
2
3
4, 10,
21, 44
5, 11,
20, 43
6–9
12–16
17
D11
D10
DVDD
Digital Supply Voltage
DGND
D9–D6
D5–D1
D0
Digital Ground
Input Data
Input Data
Input Data (Least Significant
Bit)
18, 19,
22
23, 28,
31
24
25
26
27
NC
No Internal Connection
AGND
BG REF BYPASS
DAC R
SET
DAC REF BYPASS
AVDD
Analog Ground
No External Connection*
R
SET
Resistor Connection
No External Connection*
Analog Supply Voltage
Pin #
Pin Name
Pin Function
29
I
OUTB
Complementary Analog
Current Output of the DAC
True Analog Current Output
of DAC
PLL Ground
PLL Loop Filter Connection
PLL Voltage Supply
Cable Driver Amp Enable
Cable Driver Amp Data
Cable Driver Amp Clock
Chip Select
Serial Data Output
Serial Port I/O
Serial Port Clock
Performs I/O Synchronization
Profile Select 0
Profile Select 1
Reference Clock Input
Master Reset
30
I
OUT
32
33
34
35
36
37
38
39
40
41
42
45
46
47
48
PLL GND
PLL FILTER
PLL SUPPLY
CA ENABLE
CA DATA
CA CLK
CS
SDO
SDIO
SCLK
SYNC I/O
PS0
PS1
REFCLK
RESET
PIN FUNCTION DESCRIPTIONS
PIN CONFIGURATION
36
35
34
33
32
31
30
29
28
27
26
25
13 14 15 16 17 18 19 20 21 22 23 24
1
2
3
4
5
6
7
8
9
10
11
12
48 47 46 45 44
39 38
43 42 41 40
37
PIN 1
TOP VIEW
(Not to Scale)
AD9856
CA DATA
CA ENABLE
PLL SUPPLY
PLL FILTER
PLL GND
AGND
I
OUT
I
OUTB
AGND
AVDD
DAC REF BYPASS
DAC R
SET
TxENABLE
D11
D10
DVDD
DGND
D9
D8
D7
D6
NC = NO CONNECT
DVDD
DGND
B
D5
N
D
D
N
D
D
D
D
D
N
A
S
C
R
S
R
P
D
D
C
P
S
S
*In most cases optimal performance is achieved with no external connection. For extremely noisy environments BG REF BYPASS can be bypassed with up to a
0.1
μ
F capacitor to AGND (Pin 23). DAC REF BYPASS can be bypassed with up to a 0.1
μ
F capacitor to AVDD (Pin 27).
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