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參數(shù)資料
| 型號： | AD9244BSTZ-40 |
| 廠商： | Analog Devices Inc |
| 文件頁數(shù)： | 19/36頁 |
| 文件大小： | 0K |
| 描述： | IC ADC 14BIT 40MSPS 48-LQFP |
| 標準包裝： | 1 |
| 位數(shù)： | 14 |
| 采樣率（每秒）： | 40M |
| 數(shù)據(jù)接口： | 并聯(lián) |
| 轉(zhuǎn)換器數(shù)目： | 1 |
| 功率耗散（最大）： | 300mW |
| 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-LQFP |
| 供應商設(shè)備封裝： | 48-LQFP（7x7） |
| 包裝： | 托盤 |
| 輸入數(shù)目和類型： | 2 個單端，單極；1 個差分，單極 |
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AD9244
Rev. C | Page 26 of 36
EVALUATION BOARD
ANALOG INPUT CONFIGURATION
Table 12 provides a summary of the analog input configuration.
The analog inputs of the AD9244 on the evaluation board can
be driven differentially through a transformer via Connector S4,
or through the AD8138 amplifier via Connector S2, or they can
be driven single-ended directly via Connector S3. When using
the transformer or AD8138 amplifier, a single-ended source can
be used, as both of these devices are configured on the AD9244
evaluation board to convert single-ended signals to differential
signels.
Optimal AD9244 performance is achieved above 500 kHz by
using the input transformer. To drive the AD9244 via the trans-
former, connect solderable Jumper JP45 and Jumper JP46. DC
bias is provided by Resistor R8 and Resistor R28. The evaluation
board has positions for through-hole and surface-mount
transformers.
For applications requiring lower frequencies or dc applications,
and noise performance, as well as input buffering up to 30 MHz.
For more information, refer to the AD8138 data sheet. To use
the AD8138 to drive the AD9244, remove the transformer (T1
or T4) and connect solderable Jumper JP42 and Jumper JP43.
The AD9244 can be driven single-ended directly via S3 and can
be ac-coupled or dc-coupled by removing or inserting JP5. To
run the evaluation board in this way, remove the transformer
(T1 or T4) and connect solderable Jumper JP40 and Jumper JP41.
Resistor R40, Resistor R41, Resistor R8, and Resistor R28 are
used to bias the AD9244 inputs to the correct common-mode
levels in this application.
REFERENCE CONFIGURATION
As described in the Analog Input and Reference Overview
section, the AD9244 can be configured to use its own internal
or an external reference. An external reference, D3, and refer-
ence buffer, U5, are included on the AD9244 evaluation board.
Jumper JP8 and Jumper JP22 to Jumper JP24 can be used to
select the desired reference configuration (see Table 13).
CLOCK CONFIGURATION
The AD9244 evaluation board was designed to achieve optimal
performance as well as to be easily configurable by the user. To
configure the clock input, begin by connecting the correct com-
bination of solderable jumpers (see Table 14). The specific
jumper configuration is dependent on the application and can
be determined by referring to the Clock Input Modes section. If
the differential clock input mode is selected, an external sine
wave generator applied to S5 can be used as the clock source.
The clock buffer/drive MC10EL16 from ON Semiconductor is
used on the evaluation board to buffer and square the clock
input. If the single-ended clock configuration is used, an exter-
nal clock source can be applied to S1.
The AD9244 evaluation board generates a buffered clock at
TTL/CMOS levels for use with a data capture system, such as
the HSC-ADC-EVAL-SC system. The clock buffering is pro-
vided by U4 and U7 and is configured by Jumper JP3,
Jumper JP4, Jumper JP9, and Jumper JP18 (see Table 14).
Table 12. Analog Input Jumper Configuration
Analog Input
Input Connector
Jumpers
Notes
Differential: Transformer
S4
45, 46
R8, R28 provide dc bias; optimal for 500 kHz.
Differential: Amplifier
S2
42, 43
Remove T1 or T4; used for low input frequencies.
Single-Ended
S3
5, 40, 41
Remove T1 or T4. JP5: connected for dc-coupled, not connected for ac-coupling.
Table 13. Reference Jumper Configuration
Reference
Voltage
Jumpers
Notes
Internal
2 V
23
JP8 not connected
Internal
1 V
24
JP8 not connected
Internal
1 V ≤ VREF ≤ 2 V
25
JP8 not connected; VREF = 1 + R1/R2
External
1 V ≤ VREF ≤ 2 V
8, 22
Set VREF with R26
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AD9244BSTZ-401 | 制造商:AD 制造商全稱:Analog Devices 功能描述:14-Bit, 40 MSPS/65 MSPS A/D Converter |
| AD9244BSTZ-65 | 功能描述:IC ADC 14BIT 65MSPS 48-LQFP RoHS:是 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 模數(shù)轉(zhuǎn)換器 系列:- 標準包裝:1 系列:microPOWER™ 位數(shù):8 采樣率（每秒）:1M 數(shù)據(jù)接口:串行，SPI? 轉(zhuǎn)換器數(shù)目:1 功率耗散（最大）:- 電壓電源:模擬和數(shù)字 工作溫度:-40°C ~ 125°C 安裝類型:表面貼裝 封裝/外殼:24-VFQFN 裸露焊盤 供應商設(shè)備封裝:24-VQFN 裸露焊盤（4x4） 包裝:Digi-Reel® 輸入數(shù)目和類型:8 個單端，單極 產(chǎn)品目錄頁面:892 (CN2011-ZH PDF) 其它名稱:296-25851-6 |
| AD9244BSTZ-65 | 制造商:Analog Devices 功能描述:IC 14BIT ADC SMD 9244 LQFP48 制造商:Analog Devices 功能描述:IC, 14BIT ADC, SMD, 9244, LQFP48 |
| AD9244BSTZ-651 | 制造商:AD 制造商全稱:Analog Devices 功能描述:14-Bit, 40 MSPS/65 MSPS A/D Converter |
| AD9244BSTZRL-40 | 功能描述:IC ADC 14BIT SGL 40MSPS 48LQFP RoHS:是 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 模數(shù)轉(zhuǎn)換器 系列:- 標準包裝: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） 供應商設(shè)備封裝:28-PDIP 包裝:管件 輸入數(shù)目和類型:1 個單端，雙極 |
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