- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄384650 > MAX1422ECM (MAXIM INTEGRATED PRODUCTS INC) 12-Bit, 20Msps, 3.3V, Low-Power ADC with Internal Reference PDF資料下載
參數(shù)資料
| 型號(hào)： | MAX1422ECM |
| 廠商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分類： | ADC |
| 英文描述： | 12-Bit, 20Msps, 3.3V, Low-Power ADC with Internal Reference |
| 中文描述： | 1-CH 12-BIT PROPRIETARY METHOD ADC, PARALLEL ACCESS, PQFP48 |
| 封裝： | 7 X 7 MM, 1.40 MM HEIGHT, MS-026-BBC, TQFP-48 |
| 文件頁數(shù)： | 12/15頁 |
| 文件大小： | 727K |
| 代理商： | MAX1422ECM |
M
Single-Ended, AC-Coupled Input Signal
Figure 9 shows an AC-coupled, single-ended applica-
tion, using a MAX4108 op amp. This configuration pro-
vides high-speed, high-bandwidth, low noise, and low
distortion to maintain the integrity of the input signal.
Grounding, Bypassing and
Board Layout
The MAX1422 requires high-speed board layout design
techniques. Locate all bypass capacitors as close to
the device as possible, preferably on the same side of
the board as the ADC, using surface-mount devices for
minimum inductance. Bypass REFP, REFN, REFIN, and
CML with a parallel network of 0.22μF capacitors and
1nF to AGND. AV
DD
should be bypassed with a similar
network of a 10μF bipolar capacitor in parallel with two
ceramic capacitors of 1nF and 0.1μF. Follow the same
rules to bypass the digital supply DV
DD
to DGND.
Multilayer boards with separate ground and power
planes produce the highest level of signal integrity.
Consider the use of a split ground plane arrangement
to match the physical location of the analog ground
(AGND) and the digital output driver ground (DGND)
on the ADCs package. The two ground planes should
be joined at a single point such that the noisy digital
ground currents do not interfere with the analog ground
plane. Alternatively, all ground pins could share the
same ground plane if the ground plane is sufficiently
isolated from any noisy, digital systems ground plane
(e.g., downstream output buffer DSP ground plane).
Route high-speed digital signal traces away from sensi-
tive analog traces, and remove digital ground and
power planes from underneath digital outputs. Keep all
signal lines short and free of 90 degree turns.
Static Parameter Definitions
Integral Nonlinearity (INL)
Integral nonlinearity is the deviation of the values on an
actual transfer function from a straight line. This
straight-line can be either a best straight-line fit or a line
drawn between the endpoints of the transfer function,
once offset and gain errors have been nullified. The
static linearity parameters for the MAX1422 are mea-
sured using the best straight-line fit method.
Differential Nonlinearity (DNL)
Differential nonlinearity is the difference between an
actual step-width and the ideal value of 1LSB. A DNL
error specification of less than 1LSB guarantees no
missing codes.
Dynamic Parameter Definitions
Aperture Jitter
Figure 10 depicts the aperture jitter (t
AJ
), which is the
sample-to-sample variation in the aperture delay.
12-Bit, 20Msps, 3.3V, Low-Power ADC with
Internal Reference
12
______________________________________________________________________________________
N - 7
N - 8
N
N - 6
N + 1
N - 5
N + 2
N - 4
N + 3
N - 3
N + 4
N - 2
N + 5
N - 1
N
N + 6
N + 7
7 CLOCK-CYCLE LATENCY
ANALOG INPUT
DATA OUTPUT
t
DO
t
CH
t
CL
CLK
CLK
Figure 6. System and Output Timing Diagram
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| MAX1425 | 10-Bit, 20Msps ADC |
| MAX1425EAI | 0.5C Digital Out Temperature Sensor 8-MSOP -40 to 125 |
| MAX1425CAI | 10-Bit, 20Msps ADC |
| MAX1426 | 10-Bit, 10Msps ADC |
| MAX1426CAI | 0.5C Digital Out Temperature Sensor 8-MSOP -40 to 125 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX1422ECM+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 |
| MAX1422ECM+TD | 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 |
| MAX1422ECM-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 |
| MAX1422ECM-TD | 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 |
| MAX1425EAI | 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 |
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。