參數(shù)資料
型號(hào)： AD9203ARUZRL7
廠商： Analog Devices Inc
文件頁(yè)數(shù)： 11/28頁(yè)
文件大小： 0K
描述： IC ADC 10BIT 40MSPS 3V 28-TSSOP
標(biāo)準(zhǔn)包裝： 1,000
位數(shù)： 10
采樣率（每秒）： 40M
數(shù)據(jù)接口： 并聯(lián)
轉(zhuǎn)換器數(shù)目： 5
功率耗散（最大）： 108mW
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： 28-TSSOP（0.173"，4.40mm 寬）
供應(yīng)商設(shè)備封裝： 28-TSSOP
包裝： 帶卷 (TR)
輸入數(shù)目和類型： 2 個(gè)單端，單極；1 個(gè)差分，單極
其它名稱： AD9203ARUZRL7-ND
AD9203ARUZRL7TR
AD9203
Rev. B | Page 19 of 28
AD9203 is powered from a 3 V supply rail while the high
performance 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.
ULTRASOUND APPLICATIONS
The AD9203 provides excellent performance in 10-bit
ultrasound 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 37. Note that the spurs near the noise
floor are more than 80 dB below fIN. This is especially valuable
in Doppler ultrasound applications where low frequency shifts
from the fundamental are important.
The 74 mW power consumption gives the 40 MSPS AD9203 an
order of magnitude improvement over older generation
components.
–110
–100
–90
–80
–70
–60
–50
–40
–30
–20
–10
0
10
4.5E+6
4.7E+6
4.9E+6
5.1E+6
5.3E+6
5.5E+6
00573-037
fIN
dB
FUND
SNR = 59.9dB
THD = –75dB
SFDR = 82dB
00573-036
AD8138
3V
AINP
AINN
AD9203
1.5V
3V
ANALOG
INPUT
AD604
TGC
AMPLIFIER
SINGLE-
ENDED
ANALOG
GAIN
CONTROL
CONDITIONED
TRANSDUCER
SIGNAL
Figure 36. Ultrasound Connection for the AD9203
Figure 36 illustrates the AD604 variable gain amplifier
configured for time gain compensation (TGC). The low power
Figure 37. SFDR Performance Near the Fundamental Signal (8192 Point FFT,
fIN = 5 MHz, FS = 40 MSPS)
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