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参数资料
| 型号： | MAX11612EVKIT+ |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 13/24页 |
| 文件大小： | 0K |
| 描述： | KIT EVALUATION FOR MAX11612 |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 1 |
| 系列： | * |
MAX11612–MAX11617
Low-Power, 4-/8-/12-Channel, I2C,
12-Bit ADCs in Ultra-Small Packages
20
Maxim Integrated
Transfer Functions
Output data coding for the MAX11612–MAX11617 is
binary in unipolar mode and two’s complement in bipo-
lar mode with 1 LSB = (VREF/2N) where N is the number
of bits (12). Code transitions occur halfway between
successive-integer LSB values. Figures 12 and 13
show the input/output (I/O) transfer functions for unipo-
lar and bipolar operations, respectively.
Layout, Grounding, and Bypassing
Only use PC boards. Wire-wrap configurations are not
recommended since the layout should ensure proper
separation of analog and digital traces. Do not run ana-
log and digital lines parallel to each other, and do not
layout digital signal paths underneath the ADC pack-
age. Use separate analog and digital PCB ground sec-
tions with only one star point (Figure 14) connecting the
two ground systems (analog and digital). For lowest
noise operation, ensure the ground return to the star
ground’s power supply is low impedance and as short
as possible. Route digital signals far away from sensi-
tive analog and reference inputs.
High-frequency noise in the power supply (VDD) could
influence the proper operation of the ADC’s fast com-
parator. Bypass VDD to the star ground with a network of
two parallel capacitors, 0.1F and 4.7F, located as
close as possible to the MAX11612–MAX11617 power-
supply pin. Minimize capacitor lead length for best sup-
ply noise rejection, and add an attenuation resistor (5
)
in series with the power supply if it is extremely noisy.
Definitions
Integral Nonlinearity
Integral nonlinearity (INL) 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 MAX11612–
MAX11617’s INL is measured using the endpoint.
Differential Nonlinearity
Differential nonlinearity (DNL) is the difference between
an actual step width and the ideal value of 1 LSB. A
DNL error specification of less than 1 LSB guarantees
no missing codes and a monotonic transfer function.
Aperture Jitter
Aperture jitter (tAJ) is the sample-to-sample variation in
the time between the samples.
Aperture Delay
Aperture delay (tAD) is the time between the falling
edge of the sampling clock and the instant when an
actual sample is taken.
011 . . . 111
011 . . . 110
000 . . . 010
000 . . . 001
000 . . . 000
111 . . . 111
111 . . . 110
111 . . . 101
100 . . . 001
100 . . . 000
- FS
0
INPUT VOLTAGE (LSB)
OUTPUT CODE
ZS = 0
+FS - 1 LSB
*VCOM
VREF/2
*VIN = (AIN+) - (AIN-)
FS =
VREF
2
-FS =
-VREF
2
≤
MAX11612–
MAX11617
1 LSB =
VREF
4096
Figure 13. Bipolar Transfer Function
GND
VLOGIC = 3V/5V
3V OR 5V
SUPPLIES
DGND
3V/5V
GND
*OPTIONAL
4.7
F
R* = 5
0.1
F
VDD
DIGITAL
CIRCUITRY
MAX11612–
MAX11617
Figure 14. Power-Supply Grounding Connection
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX11612EVKIT+ | 功能描述:数据转换 IC 开发工具 MAX11612 Eval Kit 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 |
| MAX11612EVSYS+ | 功能描述:数据转换 IC 开发工具 MAX11612 Eval Kit 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 |
| MAX11613 | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:2.7V to 3.6V and 4.5V to 5.5V, Low-Power, 4-/8-/12-Channel, 2-Wire Serial, 12-Bit ADCs |
| MAX11613DB+ | 功能描述:模数转换器 - ADC Integrated Circuits (ICs) Data Acquisition - Analog to Digital Converters - IC ADC 12BIT 4CH LP 8UMAX 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 |
| MAX11613EUA+ | 功能描述:模数转换器 - ADC 12-Bit 4Ch 94.4sps 3.6V Precision 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 |
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