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| 型号： | MAX1003CAX+ |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 2/12页 |
| 文件大小： | 0K |
| 描述： | IC ADC 6BIT 90MSPS DL 36-SSOP |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 30 |
| 位数： | 6 |
| 采样率（每秒）： | 90M |
| 数据接口： | 并联 |
| 转换器数目： | 2 |
| 功率耗散（最大）： | 941mW |
| 电压电源： | 单电源 |
| 工作温度： | 0°C ~ 70°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 36-BSOP（0.295"，7.50mm 宽） |
| 供应商设备封装： | 36-SSOP |
| 包装： | 管件 |
| 输入数目和类型： | 4 个单端，单极；2 个差分，单极 |
MAX1003
Low-Power, 90Msps, Dual 6-Bit ADC
10
______________________________________________________________________________________
__________Applications Information
The MAX1003 is designed with separate analog and
digital power-supply and ground connections to isolate
high-current digital noise spikes from the more sensi-
tive analog circuitry. The high-current digital output
ground (OGND) and analog ground (GND) should be
at the same DC level, connected at only one location
on the board. This will provide best noise immunity and
improved conversion accuracy. Use of separate
ground planes is strongly recommended.
The entire board needs good DC bypassing for both
analog and digital supplies. Place the power-supply
bypass capacitors close to where the power is routed
onto the board, i.e., close to the connector. 10F elec-
trolytic capacitors with low-ESR ratings are recom-
mended. For best effective bits performance, minimize
capacitive loading at the digital outputs. Keep the digi-
tal output traces as short as possible.
The MAX1003 requires a +5V ±5% power supply for
the analog supply (VCC) and a +3.3V ±300mV power
supply connected to VCCO for the logic outputs.
Bypass each of the VCC_ supply pins to its respective
GND with high-quality ceramic capacitors located as
close to the package as possible (Table 2). Consult the
evaluation kit manual for a suggested layout and
bypassing scheme.
_____________Dynamic Performance
Signal-to-noise and distortion (SINAD) is the ratio of the
fundamental input frequency’s RMS amplitude to all
other ADC output signals. The output spectrum is limit-
ed to frequencies above DC and below one-half the
ADC sample rate.
The theoretical minimum analog-to-digital noise is
caused by quantization error, and results directly from
the ADC’s resolution: SNR = (6.02N + 1.76)dB, where
N is the number of bits of resolution. Therefore, a per-
fect 6-bit ADC can do no better than 38dB.
The FFT Plot (see
Typical Operating Characteristics)
shows the result of sampling a pure 20MHz sinusoid at
a 90MHz clock rate. This FFT plot of the output shows
the output level in various spectral bands. The plot has
been averaged to reduce the quantization noise floor
and reveal the low-amplitude spurs. This emphasizes
the excellent spurious-free dynamic range of the
MAX1003.
The effective resolution (or effective number of bits) the
ADC provides can be measured by transposing the
equation that converts resolution to SINAD: N =
(SINAD - 1.76) / 6.02 (see
Typical Operating
Characteristics).
Table 2. Bypassing
0.01F
Oscillator/Clock
0.01F
Converter
SUPPLY
FUNCTION
0.01F
Analog Inputs
CAPACITOR
VALUE
47pF
Digital I-Output
0.01F
Buffer
47pF
Digital Q-Output
27
19
11
27
12
BYPASS
TO
GND/
OGND
7
28
36
8
26
13
VCC/
VCCO
6
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX1003CAX+ | 功能描述:模数转换器 - ADC Low-Power 90Msps Dual 6-Bit 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 |
| MAX1003CAX+T | 功能描述:模数转换器 - ADC Low-Power 90Msps Dual 6-Bit 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 |
| MAX1003CAX-T | 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 |
| MAX1003EVKIT | 功能描述:数据转换 IC 开发工具 RoHS:否 制造商:Texas Instruments 产品:Demonstration Kits 类型:ADC 工具用于评估:ADS130E08 接口类型:SPI 工作电源电压:- 6 V to + 6 V |
| MAX1005 | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:IF Undersampler |
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