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參數(shù)資料
| 型號： | MAX1182 |
| 廠商： | Maxim Integrated Products, Inc. |
| 英文描述： | Dual 10-Bit, 65Msps, +3V, Low-Power ADC with Internal Reference and Parallel Outputs |
| 中文描述： | 雙路、10位、65Msps、+3V、低功耗ADC，內(nèi)置電壓基準，并行輸出 |
| 文件頁數(shù)： | 14/22頁 |
| 文件大?。?/td> | 684K |
| 代理商： | MAX1182 |
M
Dual 10-Bit, 65Msps, +3V, Low-Power ADC with
Internal Reference and Parallel Outputs
14
______________________________________________________________________________________
Applications Information
Figure 5 depicts a typical application circuit containing
two single-ended to differential converters. The internal
reference provides a V
DD
/2 output voltage for level
shifting purposes. The input is buffered and then split to
a voltage follower and inverter. One lowpass filter per
ADC suppresses some of the wideband noise associat-
ed with high-speed operational amplifiers, follows the
amplifiers. The user may select the R
ISO
and C
IN
val-
ues to optimize the filter performance, to suit a particu-
lar application. For the application in Figure 5, a R
ISO
of
50
is placed before the capacitive load to prevent
ringing and oscillation. The 22pF C
IN
capacitor acts as
a small bypassing capacitor.
Using Transformer Coupling
A RF transformer (Figure 6) provides an excellent solu-
tion to convert a single-ended source signal to a fully
differential signal, required by the MAX1182 for opti-
mum performance. Connecting the center tap of the
transformer to COM provides a V
DD
/2 DC level shift to
the input. Although a 1:1 transformer is shown, a step-
up transformer may be selected to reduce the drive
requirements. A reduced signal swing from the input
driver, such as an op amp, may also improve the over-
all distortion.
In general, the MAX1182 provides better SFDR and
THD with fully-differential input signals than single-
ended drive, especially for very high input frequencies.
In differential input mode, even-order harmonics are
lower as both inputs (INA+, INA- and/or INB+, INB-) are
balanced, and each of the ADC inputs only requires
half the signal swing compared to single-ended mode.
N - 6
N
N - 5
N + 1
N - 4
N + 2
N - 3
N + 3
N - 2
N + 4
N - 1
N + 5
N
N + 6
N + 1
5 CLOCK-CYCLE LATENCY
ANALOG INPUT
CLOCK INPUT
DATA OUTPUT
D9A
–
D0A
t
D0
t
CH
t
CL
N - 6
N - 5
N - 4
N - 3
N - 2
N - 1
N
N + 1
DATA OUTPUT
D9B
–
D0B
OUTPUT
D9A
–
D0A
OE
t
DISABLE
t
ENABLE
HIGH-Z
HIGH-Z
VALID DATA
OUTPUT
D9B
–
D0B
HIGH-Z
HIGH-Z
VALID DATA
Figure 3. System Timing Diagram
Figure 4. Output Timing Diagram
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX1182ECM | 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述: |
| MAX1182ECM+D | 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 10-Bit 2Ch 65Msps High Speed ADC RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結(jié)構(gòu):Sigma-Delta 轉(zhuǎn)換速率:125 SPs to 8 KSPs 分辨率:24 bit 輸入類型:Differential 信噪比:107 dB 接口類型:SPI 工作電源電壓:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-32 |
| MAX1182ECM+TD | 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 10-Bit 2Ch 65Msps High Speed ADC RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結(jié)構(gòu):Sigma-Delta 轉(zhuǎn)換速率:125 SPs to 8 KSPs 分辨率:24 bit 輸入類型:Differential 信噪比:107 dB 接口類型:SPI 工作電源電壓:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-32 |
| MAX1182ECM-D | 功能描述:模數(shù)轉(zhuǎn)換器 - ADC RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結(jié)構(gòu):Sigma-Delta 轉(zhuǎn)換速率:125 SPs to 8 KSPs 分辨率:24 bit 輸入類型:Differential 信噪比:107 dB 接口類型:SPI 工作電源電壓:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-32 |
| MAX1182ECM-T | 制造商:Maxim Integrated Products 功能描述:- Tape and Reel |
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