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參數資料
| 型號： | AD9203 |
| 廠商： | Analog Devices, Inc. |
| 英文描述： | 10-Bit, 40 MSPS, 3 V, 74 mW A/D Converter |
| 中文描述： | 10位，40 MSPS的，3伏，74毫瓦的A / D轉換器 |
| 文件頁數： | 16/19頁 |
| 文件大小： | 216K |
| 代理商： | AD9203 |
REV. 0
AD9203
–16–
ULTRASOUND APPLICATIONS
The AD9203 provides excellent performance in 10-bit ultra-
sound applications. This is demonstrated by its high SNR with
analog input frequencies up to and including Nyquist. The
presence of spurs near the base of a fundamental frequency bin
is demonstrated by Figure 35. Note that the spurs near the noise
floor are more than 80 dB below f
IN
. This is especially valuable
in Doppler ultrasound applications where low frequency shifts
from the fundamental are important.
AD8138
+3V
AINP
AINN
AD9203
1.5V
+3V
SINGLE-
ENDED
ANALOG
AD604
TGC
AMPLIFIER
ANALOG
INPUT
GAIN
CONTROL
CONDITIONED
TRANSDUCER
SIGNAL
Figure 34. Ultrasound Connection for the AD9203
Figure 34 illustrates the AD604 variable gain amplifier con-
figured for time gain compensation (TGC). The low power
AD9203 is powered from a 3 V supply rail while the high per-
formance AD604 is powered from 5 V supply rails. An AD8138
is used to drive the AD9203. This is implemented due to the
ability of differential drive techniques to cancel common mode
noise and input anomalies.
The 74 mW power consumption gives the 40 MSPS AD9203
an order of magnitude improvement over older generation
components.
F
IN
10
d
0
–10
–20
–30
–40
–50
–60
–70
–80
–90
–100
–110
4.5E+6
4.7E+6
4.9E+6
5.1E+6
5.3E+6
5.5E+6
FUND
SNR = 59.9dB
THD = –75dB
SFDR = 82dB
Figure 35. SFDR Performance Near the Fundamental
Signal (8192 Point FFT, f
IN
= 5 MHz, F
S
= 40 MSPS)
EVALUATION BOARD
The AD9203 evaluation board is shipped wired for 2 V differen-
tial operation. The board should be connected to power and test
equipment as shown in Figure 36. It is easily configured for
single ended and differential operation as well as 1 V and 2 V
spans. Refer to schematic on next page.
DSP
EQUIPMENT
ANTI-
ALIASING
FILTER
SYNTHESIZER
1MHz 1.9V p-p
HP8644
SYNTHESIZER
40MHz 1V p-p
HP8644
DRVDD
J1
ANALOG
INPUT
GND
+3-5d
AVDD
GND
AVEE
J5
EXTERNAL
CLOCK
AD9203
EVALUATION BOARD
OUTPUT
WORD
+
–
+3V
–
+
+3V
+3V
+
–
+3V
+
–
Figure 36. Evaluation Board Connection
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| AD9203ARU | 功能描述:IC ADC 10BIT 40MSPS 3V 28-TSSOP RoHS:否 類別:集成電路 (IC) >> 數據采集 - 模數轉換器 系列:- 標準包裝:1,000 系列:- 位數:16 采樣率（每秒）:45k 數據接口:串行 轉換器數目:2 功率耗散（最大）:315mW 電壓電源:模擬和數字 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:28-SOIC（0.295"，7.50mm 寬） 供應商設備封裝:28-SOIC W 包裝:帶卷 (TR) 輸入數目和類型:2 個單端，單極 |
| AD9203ARURL7 | 功能描述:IC ADC 10BIT 40MSPS 3V 28-TSSOP RoHS:否 類別:集成電路 (IC) >> 數據采集 - 模數轉換器 系列:- 標準包裝:1,000 系列:- 位數:16 采樣率（每秒）:45k 數據接口:串行 轉換器數目:2 功率耗散（最大）:315mW 電壓電源:模擬和數字 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:28-SOIC（0.295"，7.50mm 寬） 供應商設備封裝:28-SOIC W 包裝:帶卷 (TR) 輸入數目和類型:2 個單端，單極 |
| AD9203ARUZ | 功能描述:IC ADC 10BIT 40MSPS 3V 28-TSSOP RoHS:是 類別:集成電路 (IC) >> 數據采集 - 模數轉換器 系列:- 標準包裝:1 系列:microPOWER™ 位數:8 采樣率（每秒）:1M 數據接口:串行，SPI? 轉換器數目:1 功率耗散（最大）:- 電壓電源:模擬和數字 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 供應商設備封裝:24-VQFN 裸露焊盤（4x4） 包裝:Digi-Reel® 輸入數目和類型:8 個單端，單極 產品目錄頁面:892 (CN2011-ZH PDF) 其它名稱:296-25851-6 |
| AD9203ARUZ | 制造商:Analog Devices 功能描述:IC ADC 10BIT 40MSPS 28TSSOP |
| AD9203ARUZ | 制造商:Analog Devices 功能描述:IC, ADC, 10BIT, 40MSPS, TSSOP-28 |
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