參數(shù)資料
型號(hào)： AD9260
廠商： Analog Devices, Inc.
英文描述： High-Speed Oversampling CMOS ADC with 16-Bit Resolution at a 2.5 MHz Output Word Rate
中文描述： 高速16位分辨率在2.5 MHz的輸出字速率采樣的CMOS模數(shù)轉(zhuǎn)換器
文件頁(yè)數(shù)： 27/36頁(yè)
文件大?。?/td> 572K
代理商： AD9260
AD9260
–27–
REV. B
The scaling is accomplished by properly attaching an external
resistor to the BIAS pin of the AD9260 as shown in Table IX.
R
EXT
is normally 2 k
for a clock speed of 20 MHz and scales
inversely with clock rate. Because BIAS is an external pin, mini-
mization of capacitance to this pin is recommended in order to
prevent instability of the bias pin amplifier.
AVDD
4R
3R
2R
R
MODE PIN
AVSS
E
LATCH
CLOCK
ENCODED MODE
Figure 62. Simplified Mode Pin Circuitry
BIAS CURRENT
REXT
BIAS PIN
1V
Figure 63. Simplified Bias Pin Circuitry
POWER DISSIPATION CONSIDERATIONS
The power dissipation of the AD9260 is dependent on its
application-specific configuration and operating conditions.
The analog power dissipation as shown in Figure 64 is primarily
a function of its power bias setting and sample rate. It remains
insensitive to the particular input waveform being digitized or
digital filter MODE setting. The digital power dissipation is
primarily a function of the digital supply setting (i.e., +3 V to
+5 V), the sample rate and, to a lesser extent, the MODE setting
and input waveform. Figures 65a and 65b show the total current
dissipation of the
“
combined
”
digital (DVDD) and digital driver
supply (DRVDD) for +3 V and +5 V supplies. Note, DVDD
and DRVDD are typically derived from the same supply bus
since no degradation in performance results. A 1 MHz full-
scale sine wave was used to ensure maximum digital activity in
the digital filters and the digital drivers had a fanout of one.
Note also that a twofold decrease in digital supply current re-
sults when the digital supply is reduced form +5 V to +3 V.
SAMPLE RATE
–
MSPS
I
A
–
5
30
70
90
110
130
10
15
20
50
FULL BIAS-2k
HALF BIAS-4k
QUARTER BIAS-8k
Figure 64. I
AVDD
vs. Sample Rate (AVDD = +5 V,
Mode 1
×
–4
×
)
8
2
4
1
SAMPLE RATE
–
MSPS
I
D
/
D
–
5
6
10
12
14
16
10
15
20
8
4
2
0
Figure 65a. I
DVDD
/I
DRVDD
vs. Sample Rate (DVDD = DRVDD =
3 V, f
IN
= 1 MHz)
8
2
4
1
SAMPLE RATE
–
MSPS
I
D
/
D
–
5
10
20
25
30
10
15
20
15
5
0
Figure 65b. I
DVDD
/I
DRVDD
vs. Sample Rate (DVDD = DRVDD
= 5 V, f
IN
= 1 MHz)
相關(guān)PDF資料
PDF描述
AD9260AS High-Speed Oversampling CMOS ADC with 16-Bit Resolution at a 2.5 MHz Output Word Rate
AD9260EB High-Speed Oversampling CMOS ADC with 16-Bit Resolution at a 2.5 MHz Output Word Rate
AD9280ARSRL Complete 8-Bit, 32 MSPS, 95 mW CMOS A/D Converter
AD9280 Complete 8-Bit, 32 MSPS, 95 mW CMOS A/D Converter
AD9280-EB Complete 8-Bit, 32 MSPS, 95 mW CMOS A/D Converter
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
AD9260AS 制造商:Analog Devices 功能描述:ADC Single Pipelined 2.5Msps 16-bit Parallel 44-Pin MQFP 制造商:Rochester Electronics LLC 功能描述:16-BIT HIGH SPEED OVERSAMPLED ADC - Bulk 制造商:Analog Devices 功能描述:Analog-Digital Converter IC Number of Bi
AD9260ASRL 制造商:Analog Devices 功能描述:ADC Single Pipelined 2.5Msps 16-bit Parallel 44-Pin MQFP T/R 制造商:Rochester Electronics LLC 功能描述:16-BIT HIGH SPEED OVERSAMPLED ADC - Bulk
AD9260ASZ 功能描述:IC ADC CMOS 16BIT OVRSAMP 44MQFP RoHS:是 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 模數(shù)轉(zhuǎn)換器 系列:- 其它有關(guān)文件:TSA1204 View All Specifications 標(biāo)準(zhǔn)包裝:1 系列:- 位數(shù):12 采樣率（每秒）:20M 數(shù)據(jù)接口:并聯(lián) 轉(zhuǎn)換器數(shù)目:2 功率耗散（最大）:155mW 電壓電源:模擬和數(shù)字 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:48-TQFP 供應(yīng)商設(shè)備封裝:48-TQFP（7x7） 包裝:Digi-Reel® 輸入數(shù)目和類型:4 個(gè)單端，單極；2 個(gè)差分，單極 產(chǎn)品目錄頁(yè)面:1156 (CN2011-ZH PDF) 其它名稱:497-5435-6
AD9260ASZRL 功能描述:IC ADC 16BIT 2.5MHZ 44MQFP RoHS:是 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 模數(shù)轉(zhuǎn)換器 系列:- 標(biāo)準(zhǔn)包裝:1 系列:- 位數(shù):14 采樣率（每秒）:83k 數(shù)據(jù)接口:串行，并聯(lián) 轉(zhuǎn)換器數(shù)目:1 功率耗散（最大）:95mW 電壓電源:雙 ± 工作溫度:0°C ~ 70°C 安裝類型:通孔 封裝/外殼:28-DIP（0.600"，15.24mm） 供應(yīng)商設(shè)備封裝:28-PDIP 包裝:管件 輸入數(shù)目和類型:1 個(gè)單端，雙極
AD9260EB 制造商:AD 制造商全稱:Analog Devices 功能描述:High-Speed Oversampling CMOS ADC with 16-Bit Resolution at a 2.5 MHz Output Word Rate
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