MAX11040K/MAX11060
24-/16-Bit, 4-Channel, Simultaneous-Sampling,
Cascadable, Sigma-Delta ADCs
30
Maxim Integrated
Applications Information
Multiple Device Synchronization
Synchronizing Multiple Devices
Using a Shared XIN Clock Source
To synchronize multiple devices sharing a single XIN
clock source, transition the SYNC input that is shared
by all devices high to low. When an external sync
source is not available, connect DRDYOUT of the last
device to the SYNC input of all devices in the chain.
The devices ignore any SYNC transitions applied dur-
ing the power-on reset.
Synchronizing Multiple Devices
Using Independent XIN Clock Sources
If it is undesirable to connect the XIN clock sources
together, due to EMI or other reasons; use DRDYIN,
DRDYOUT, and SYNC to align the conversion timing as
shown in Figure 18. This minimizes the effects of drift
between the clock sources by resynchronizing after
each conversion when DRDYOUT transitions low. In
this configuration, the maximum correction caused by a
SYNC edge is one XIN clock cycle.
The resulting sampling rate is determined by the sampling
frequency of the device with the slowest clock source,
plus the delay through the DRDYIN to DRDYOUT chain
between this slowest device and the end of the chain.
Synchronizing Multiple Devices
to an Independent Clock Source
To periodically synchronize multiple devices to an inde-
pendent timing source, connect the timing source to
the SYNC inputs of the devices. If minimal jitter is
important in the application, program the devices to a
frequency slightly slower than the external frequency,
such that SYNC falling edges only occur a short time
after the DRDYOUT signals.
MAX11040K
MAX11060
SYNC
CS
SCLK
DIN
CASCIN
DRDYIN
DRDYOUT
FAULT
OVRFLW
DOUT
XIN
DEVICE n+1
DEVICE 0
DEVICE n
MAX11040K
MAX11060
SYNC
CS
SCLK
DIN
CASCIN
DRDYIN
CASCOUT
FAULT
OVRFLW
DOUT
XIN
XOUT CLKOUT
MAX11040K
MAX11060
SYNC
CS
SCLK
DIN
CASCIN
DRDYIN
CASCOUT
DRDYOUT
FAULT
OVRFLW
DOUT
XIN
XOUT
DRDYOUT
DSP OR
MICROCONTROLLER
CASCADE UP TO 8 DEVICES
Figure 18. One Crystal per Device and All SYNC Inputs Driven by DRDYOUT of the Last Device in the Chain
相关PDF资料
MAX11046ECB+T IC ADC 16BIT PAR 250KSPS 64TQFP
MAX11046ETN+T ADC 16BIT SAMPLING 8CH 56-TQFN
MAX11049ECB+ IC ADC 16BIT PAR 250KSPS 64TQFP
MAX1104EUA+ IC CODEC 8BIT 8-UMAX
MAX11100EUB+ IC ADC 16BIT SRL 200KSPS 10UMAX
MAX11101EUB+ IC ADC 14BIT SRL 200KSPS 10UMAX
MAX11102AUB+ IC ADC 12BIT SPI/SRL 10UMAX-EP
MAX1111CPE+ IC ADC 8BIT LP 16-DIP
相关代理商/技术参数
MAX11040K 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:24-/16-Bit, 4-Channel, Simultaneous-Sampling, Cascadable, Sigma-Delta ADCs
MAX11040K_1111 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:24-/16-Bit, 4-Channel, Simultaneous-Sampling, Cascadable, Sigma-Delta ADCs
MAX11040K_12 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:MAX11040K Evaluation Kit/Daughterboard
MAX11040KDBEVKIT 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:MAX11040K Evaluation Kit/Daughterboard
MAX11040KDBEVKIT# 功能描述:数据转换 IC 开发工具 MAX5135/11040/11612 Eval Kit w/ FMC 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
MAX11040KEVKIT 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:MAX11040K Evaluation Kit/Daughterboard
MAX11040KEVKIT# 功能描述:数据转换 IC 开发工具 MAX5135/11040/11612 Eval Kit w/ FMC 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
MAX11040KGUU 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:24-/16-Bit, 4-Channel, Simultaneous-Sampling, Cascadable, Sigma-Delta ADCs