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參數(shù)資料
| 型號： | AD9608-125EBZ |
| 廠商： | Analog Devices Inc |
| 文件頁數(shù)： | 18/40頁 |
| 文件大?。?/td> | 0K |
| 描述： | BOARD EVAL AD9608-125 |
| 標(biāo)準(zhǔn)包裝： | 1 |
| ADC 的數(shù)量： | 2 |
| 位數(shù)： | 10 |
| 采樣率（每秒）： | 125M |
| 數(shù)據(jù)接口： | 串行 |
| 工作溫度： | -40°C ~ 85°C |
| 已用 IC / 零件： | AD9608 |
| 已供物品： | 板 |
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AD9608
Rev. 0 | Page 25 of 40
In any configuration, the value of Shunt Capacitor C is dependent
on the input frequency and source impedance and may need to
be reduced or removed. Table 11 displays the suggested values to
set the RC network. However, these values are dependent on the
input signal and should be used only as a starting guide.
Table 11. Example RC Network
Frequency Range (MHz)
R Series
(Ω Each)
C Differential (pF)
0 to 70
33
22
70 to 200
125
Open
Single-Ended Input Configuration
A single-ended input can provide adequate performance in
cost-sensitive applications. In this configuration, SFDR and
distortion performance degrade due to the large input common-
mode swing. If the source impedances on each input are
matched, there should be little effect on SNR performance.
Figure 48 shows a typical single-ended input configuration.
1V p-p
R
C
49.9
0.1F
10F
0.1F
AVDD
1k
ADC
AVDD
VIN+x
VIN–x
09977
-052
Figure 48. Single-Ended Input Configuration
VOLTAGE REFERENCE
A stable and accurate 1.0 V voltage reference is built into the
AD9608. The VREF pin can be configured using either the internal
1.0 V reference or an externally applied 1.0 V reference voltage.
The various reference modes are summarized in the sections
that follow. The Reference Decoupling section describes the
best practices PCB layout of the reference.
Internal Reference Connection
A comparator within the AD9608 detects the potential at the
SENSE pin and configures the reference into two possible modes,
which are summarized in Table 12. If SENSE is grounded, the
reference amplifier switch is connected to the internal resistor
divider (see Figure 49), setting VREF to 1.0 V.
VREF
SENSE
0.5V
ADC
SELECT
LOGIC
0.1F
1.0F
VIN–A/VIN–B
VIN+A/VIN+B
ADC
CORE
09977-
055
Figure 49. Internal Reference Configuration
If the internal reference of the AD9608 is used to drive multiple
converters to improve gain matching, the loading of the reference
by the other converters must be considered. Figure 50 shows
how the internal reference voltage is affected by loading.
0
–3.0
02
LOAD CURRENT (mA)
RE
F
E
RE
NCE
V
O
L
T
A
G
E
RRO
R
(%
)
.0
–0.5
–1.0
–1.5
–2.0
–2.5
0.2
0.4
0.6
0.8
1.0
1.4
1.6
1.8
1.2
INTERNAL VREF = 1.00V
09977-
057
Figure 50. VREF Accuracy vs. Load Current
Table 12. Reference Configuration Summary
Selected Mode
SENSE Voltage (V)
Resulting VREF (V)
Resulting Differential Span (V p-p)
Fixed Internal Reference
AGND to 0.2
1.0 internal
2.0
Fixed External Reference
AVDD
1.0 applied to external VREF pin
2.0
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AD9608-125EBZ | 制造商:Analog Devices 功能描述:AD9608, ADC, SPI, EVALUATION BOARD |
| AD9608BCPZ-105 | 功能描述:IC ADC DUAL 10BIT 64-LFCSP 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)品目錄頁面:1156 (CN2011-ZH PDF) 其它名稱:497-5435-6 |
| AD9608BCPZ-125 | 功能描述:IC ADC DUAL 10BIT 64-LFCSP 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)品目錄頁面:1156 (CN2011-ZH PDF) 其它名稱:497-5435-6 |
| AD9608BCPZRL7-105 | 功能描述:IC ADC 10BIT 105MSPS 64LFCSP 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:1,000 系列:- 位數(shù):12 采樣率（每秒）:300k 數(shù)據(jù)接口:并聯(lián) 轉(zhuǎn)換器數(shù)目:1 功率耗散（最大）:75mW 電壓電源:單電源 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:24-SOIC（0.295"，7.50mm 寬） 供應(yīng)商設(shè)備封裝:24-SOIC 包裝:帶卷 (TR) 輸入數(shù)目和類型:1 個(gè)單端，單極；1 個(gè)單端，雙極 |
| AD9608BCPZRL7-125 | 功能描述:IC ADC 10BIT 125MSPS 64LFCSP 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 |
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