参数资料
型号: MAX1422CCM+TD
厂商: Maxim Integrated Products
文件页数: 6/15页
文件大小: 0K
描述: IC ADC 12BIT 20MSPS 48LQFP
产品培训模块: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
标准包装: 2,000
位数: 12
采样率(每秒): 20M
数据接口: 并联
转换器数目: 1
功率耗散(最大): 152mW
电压电源: 模拟和数字
工作温度: 0°C ~ 70°C
安装类型: 表面贴装
封装/外壳: 48-LQFP
供应商设备封装: 48-LQFP(7x7)
包装: 带卷 (TR)
输入数目和类型: 1 个差分,双极
MAX1422
Total Harmonic Distortion (THD)
THD is typically the ratio of the RMS sum of the first four
harmonics of the input signal to the fundamental itself.
This is expressed as:
where V1 is the fundamental amplitude, and V2 through
V5 are the amplitudes of the 2nd- through 5th-order
harmonics.
Spurious-Free Dynamic Range (SFDR)
SFDR is the ratio expressed in decibels of the RMS
amplitude of the fundamental (maximum signal compo-
nent) to the RMS value of the next largest spurious
component, excluding DC offset.
Intermodulation Distortion (IMD)
The two-tone IMD is the ratio expressed in decibels of
either input tone to the worst 3rd-order (or higher) inter-
modulation products. The individual input tone levels
are at -6.5dB full scale.
THD
VVVV
V
+++
20
10
2
3
2
4
2
5
2
1
log
12-Bit, 20Msps, 3.3V, Low-Power ADC with
Internal Reference
14
______________________________________________________________________________________
MAX1422
1nF
1k
100
100
CIN
22pF
CML
CIN
22pF
INP
INN
0.1
F
RISO
50
RISO
50
0.22
F
VIN
MAX4108
Figure 9. Single-Ended AC-Coupled Input
MAX1422
T1
N.C.
VIN
6
1
5
2
4
3
22pF
1nF
0.1
F
0.22
F
25
25
MINICIRCUITS
T1–1T–KK81
INN
INP
CML
44pF
*
*REPLACE BOTH 22pF CAPS WITH 44pF BETWEEN
INP AND INN TO IMPROVE DYNAMIC PERFORMANCE.
Figure 8. Using a Transformer for AC-Coupling
HOLD
ANALOG
INPUT
SAMPLED
DATA (T/H)
T/H
tAD
tAJ
TRACK
CLK
Figure 10. T/H Aperature Timing
CLK
INP
INTERFACE
PIPELINE ADC
OUTPUT
DRIVERS
REFIN REFP CML REFN
OE
AVDD
AGND
DVDD
DGND
D11–D0
INN
PD
T/H
MAX1422
BANDGAP
REFERENCE
CLK
REF SYSTEM +
BIAS
Functional Diagram
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相关代理商/技术参数
参数描述
MAX1422ECM 制造商:Maxim Integrated Products 功能描述:48 PINS TQFP PKG - Bulk
MAX1422ECM+D 功能描述:模数转换器 - ADC RoHS:否 制造商:Texas Instruments 通道数量:2 结构:Sigma-Delta 转换速率:125 SPs to 8 KSPs 分辨率:24 bit 输入类型:Differential 信噪比:107 dB 接口类型:SPI 工作电源电压:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-32
MAX1422ECM+TD 功能描述:模数转换器 - ADC RoHS:否 制造商:Texas Instruments 通道数量:2 结构:Sigma-Delta 转换速率:125 SPs to 8 KSPs 分辨率:24 bit 输入类型:Differential 信噪比:107 dB 接口类型:SPI 工作电源电压:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-32
MAX1422ECM-D 功能描述:模数转换器 - ADC RoHS:否 制造商:Texas Instruments 通道数量:2 结构:Sigma-Delta 转换速率:125 SPs to 8 KSPs 分辨率:24 bit 输入类型:Differential 信噪比:107 dB 接口类型:SPI 工作电源电压:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-32
MAX1422ECM-TD 功能描述:模数转换器 - ADC RoHS:否 制造商:Texas Instruments 通道数量:2 结构:Sigma-Delta 转换速率:125 SPs to 8 KSPs 分辨率:24 bit 输入类型:Differential 信噪比:107 dB 接口类型:SPI 工作电源电压:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-32