參數(shù)資料
型號: AD9748ACPZRL7
廠商: Analog Devices Inc
文件頁數(shù): 22/24頁
文件大?。?/td> 0K
描述: IC DAC 8BIT 210MSPS 32LFCSP
標(biāo)準(zhǔn)包裝: 1,500
系列: TxDAC®
設(shè)置時(shí)間: 11ns
位數(shù): 8
數(shù)據(jù)接口: 并聯(lián)
轉(zhuǎn)換器數(shù)目: 1
電壓電源: 模擬和數(shù)字
功率耗散(最大): 145mW
工作溫度: -40°C ~ 85°C
安裝類型: 表面貼裝
封裝/外殼: 32-VFQFN 裸露焊盤,CSP
供應(yīng)商設(shè)備封裝: 32-LFCSP-VQ(5x5)
包裝: 帶卷 (TR)
輸出數(shù)目和類型: 2 電流,單極;2 電流,雙極
采樣率(每秒): 210M
Data Sheet
AD9748
Rev. B | Page 7 of 24
PIN CONFIGURATION AND FUNCTION DESCRIPTIONS
DB1
(LSB) DB0
DVDD
NC
FS ADJ
REFIO
ACOM
IOUTA
IOUTB
ACOM
AVDD
NC
DCO
M
CL
KV
DD
CL
K+
CL
K–
CL
KCO
M
CM
O
DE
M
O
DE
DB2
DB3
DB4
DB5
DB6
DB7
(
M
S
B)
DCO
M
SL
EEP
24
23
22
21
20
19
18
17
1
2
3
4
5
6
7
8
9
10
1
12
13
14
15
16
32
31
30
29
28
27
26
25
AD9748
TOP VIEW
(Not to Scale)
032
1
1-
003
NOTES
1. NC = NO CONNECT. DO NOT CONNECT TO THIS PIN.
2. IT IS RECOMMENDED THAT THE EXPOSED PAD
BE THERMALLY CONNECTED TO A COPPER
GROUND PLANE FOR ENHANCED ELECTRICAL
AND THERMAL PERFORMANCE.
Figure 3. Pin Configuration
Table 5. Pin Function Descriptions
Pin No.
Mnemonic
Description
27
DB7 (MSB)
Most Significant Data Bit (MSB).
28 to 32, 1
DB6 to DB1
Data Bits 6 to 1.
2
DB0 (LSB)
Least Significant Data Bit (LSB).
3
DVDD
Digital Supply Voltage (3.3 V).
4 to 9
NC
No Internal Connection.
10, 26
DCOM
Digital Common.
11
CLKVDD
Clock Supply Voltage (3.3 V).
12
CLK+
Differential Clock Input.
13
CLK
Differential Clock Input.
14
CLKCOM
Clock Common.
15
CMODE
Clock Mode Selection. Connect to CLKCOM for single-ended clock receiver (drive CLK+ and float
CLK–). Connect to CLKVDD for differential receiver. Float for PECL receiver (terminations on-chip).
16
MODE
Selects Input Data Format. Connect to DCOM for straight binary, DVDD for twos complement.
17, 18
AVDD
Analog Supply Voltage (3.3 V).
19, 22
ACOM
Analog Common.
20
IOUTB
Complementary DAC Current Output. Full-scale current when all data bits are 0s.
21
IOUTA
DAC Current Output. Full-scale current when all data bits are 1s.
23
REFIO
Reference Input/Output. Requires 0.1 F capacitor to ACOM.
24
FS ADJ
Full-Scale Current Output Adjust.
25
SLEEP
Power-Down Control Input. Active high. Contains active pull-down circuit; it can be left unterminated
if not used.
EPAD
It is recommended that the exposed pad be thermally connected to a copper ground plane for enhanced
electric and thermal performance.
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