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參數(shù)資料
型號(hào)： AD9851
廠商： Analog Devices, Inc.
元件分類： XO, clock
英文描述： CMOS 180 MHz DDS/DAC Synthesizer
中文描述： 180MHz的CMOS/DAC頻率合成器
文件頁(yè)數(shù)： 3/23頁(yè)
文件大小： 277K
代理商： AD9851
–3–
REV. 0
AD9851
Test
Level
AD9851BRS
Min
Parameter
Temp
Typ
Max
Units
TIMING CHARACTERISTICS
4
t
WH
, t
WL
(W_CLK Min Pulsewidth High/Low)
t
DS
, t
DH
(Data to W_CLK Setup and Hold Times)
t
FH
, t
FL
(FQ_UD Min Pulsewidth High/Low)
t
CD
(REFCLK Delay after FQ_UD)
5
t
FD
(FQ_UD Min Delay after W_CLK)
t
CF
(Output Latency from FQ_UD)
Frequency Change
FULL
FULL
FULL
FULL
FULL
IV
IV
IV
IV
IV
3.5
3.5
7
3.5
7
ns
ns
ns
ns
ns
FULL
IV
18
SYSCLK
Cycles
SYSCLK
Cycles
ns
ns
SYSCLK
Cycles
SYSCLK
Cycles
SYSCLK
Cycles
μ
s
Phase Change
FULL
IV
13
t
RH
(CLKIN Delay after RESET Rising Edge)
t
RL
(RESET Falling Edge After CLKIN)
t
RR
(Recovery from RESET)
FULL
FULL
FULL
IV
IV
IV
3.5
3.5
2
t
RS
(Minimum RESET Width)
FULL
IV
5
t
OL
(RESET Output Latency)
FULL
IV
13
Wake-Up Time from Power-Down Mode
6
+25
°
C
V
5
CMOS LOGIC INPUTS
Logic “1” Voltage, +5 V Supply
Logic “1” Voltage, +3.3 V Supply
Logic “1” Voltage, +2.7 V Supply
Logic “0” Voltage
Logic “1” Current
Logic “0” Current
Rise/Fall Time
Input Capacitance
+25
°
C
+25
°
C
+25
°
C
+25
°
C
+25
°
C
+25
°
C
+25
°
C
+25
°
C
I
I
I
I
I
I
IV
V
3.5
3.0
2.4
V
V
V
V
μ
A
μ
A
ns
pF
0.4
12
12
100
3
POWER SUPPLY
V
S6
Current @:
62.5 MHz Clock, +2.7 V Supply
100 MHz Clock, +2.7 V Supply
62.5 MHz Clock, +3.3 V Supply
125 MHz Clock, +3.3 V Supply
62.5 MHz Clock, +5 V Supply
125 MHz Clock, +5 V Supply
180 MHz Clock, +5 V Supply
Power Dissipation @ :
62.5 MHz Clock, +5 V Supply
62.5 MHz Clock, +3.3 V Supply
62.5 MHz Clock, +2.7 V Supply
100 MHz Clock, +2.7 V Supply
125 MHz Clock, +5 V Supply
125 MHz Clock, +3.3 V Supply
180 MHz Clock, +5 V Supply
P
DISS
Power-Down Mode @:
+5 V Supply
+2.7 V Supply
+25
°
C
+25
°
C
+25
°
C
+25
°
C
+25
°
C
+25
°
C
+25
°
C
VI
VI
VI
VI
VI
VI
VI
30
40
35
55
50
70
110
35
50
45
70
65
90
130
mA
mA
mA
mA
mA
mA
mA
+25
°
C
+25
°
C
+25
°
C
+25
°
C
+25
°
C
+25
°
C
+25
°
C
VI
VI
VI
VI
VI
VI
VI
250
115
85
110
365
180
555
325
150
95
135
450
230
650
mW
mW
mW
mW
mW
mW
mW
+25
°
C
+25
°
C
VI
VI
17
4
55
20
mW
mW
NOTES
1
+V
collectively refers to the positive voltages applied to DVDD, PVCC and AVDD. Voltages applied to these pins should be of the same potential.
2
Indicates the minimum signal levels required to reliably clock the device at the indicated supply voltages. This specifies the p-p signal level and dc offset needed when
the clocking signal is not of CMOS/TTL origin, i.e., a sine wave with 0 V dc offset.
3
The comparator’s jitter contribution to any input signal. This is the minimum jitter on the outputs that can be expected from an ideal input. Considerably more
output jitter is seen when nonideal input signals are presented to the comparator inputs. Nonideal characteristics include the presence of extraneous, nonharmonic
signals (spur’s, noise), slower slew rate and low comparator overdrive.
4
Timing of input signals FQ_UD, WCLK, RESET are asynchronous to the Reference Clock; however, the presence of a Reference Clock is required to implement
those functions. In the absence of a Reference Clock, the AD9851 automatically enters power-down mode rendering the IC, including the comparator, inoperable
until a Reference Clock is restored. Very high speed updates of frequency/phase word will require FQ_UD and WCLK to be externally synchronized with the exter-
nal Reference Clock to assure proper timing.
5
Not applicable when 6
×
REFCLK Multiplier is engaged.
6
Assumes no capacitive load on DACBP (Pin 17).
Specifications subject to change without notice.
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
AD9851/CGPCB 制造商:Analog Devices 功能描述:NCO/DDS, CMOS 180MHZ DDS/DAC SYNTHESIZER - Bulk 制造商:Rochester Electronics LLC 功能描述:DDS CLOCK DRIVER - Bulk
AD9851/FSPCB 制造商:Analog Devices 功能描述:Evaluation Board For NCO/DDS, CMOS 180MHZ DDS/DAC Synthesizer 制造商:Analog Devices 功能描述:NCO/DDS, CMOS 180MHZ DDS/DAC SYNTHESIZER - Bulk
AD9851BRS 功能描述:IC DDS DAC W/COMP 180MHZ 28-SSOP RoHS:否 類別:集成電路 (IC) >> 接口 - 直接數(shù)字合成 (DDS) 系列:- 產(chǎn)品變化通告:Product Discontinuance 27/Oct/2011 標(biāo)準(zhǔn)包裝:2,500 系列:- 分辨率（位）:10 b 主 fclk:25MHz 調(diào)節(jié)字寬（位）:32 b 電源電壓:2.97 V ~ 5.5 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:16-TSSOP（0.173"，4.40mm 寬） 供應(yīng)商設(shè)備封裝:16-TSSOP 包裝:帶卷 (TR)
AD9851BRSRL 功能描述:IC DDS/DAC SYNTHESIZER 28-SSOP RoHS:否 類別:集成電路 (IC) >> 接口 - 直接數(shù)字合成 (DDS) 系列:- 產(chǎn)品變化通告:Product Discontinuance 27/Oct/2011 標(biāo)準(zhǔn)包裝:2,500 系列:- 分辨率（位）:10 b 主 fclk:25MHz 調(diào)節(jié)字寬（位）:32 b 電源電壓:2.97 V ~ 5.5 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:16-TSSOP（0.173"，4.40mm 寬） 供應(yīng)商設(shè)備封裝:16-TSSOP 包裝:帶卷 (TR)
AD9851BRSZ 功能描述:IC SYNTHESIZER DDS/DAC 28-SSOP RoHS:是 類別:集成電路 (IC) >> 接口 - 直接數(shù)字合成 (DDS) 系列:- 產(chǎn)品變化通告:Product Discontinuance 27/Oct/2011 標(biāo)準(zhǔn)包裝:2,500 系列:- 分辨率（位）:10 b 主 fclk:25MHz 調(diào)節(jié)字寬（位）:32 b 電源電壓:2.97 V ~ 5.5 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:16-TSSOP（0.173"，4.40mm 寬） 供應(yīng)商設(shè)備封裝:16-TSSOP 包裝:帶卷 (TR)
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