參數(shù)資料
型號(hào)： MAX1379ATP+T
廠商： Maxim Integrated Products
文件頁(yè)數(shù)： 14/25頁(yè)
文件大?。?/td> 0K
描述： IC ADC 12BIT 1.25MSPS DL 20-TQFN
產(chǎn)品培訓(xùn)模塊： Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
標(biāo)準(zhǔn)包裝： 2,500
位數(shù)： 12
采樣率（每秒）： 1.25M
數(shù)據(jù)接口： DSP，MICROWIRE?，QSPI?，串行，SPI?
轉(zhuǎn)換器數(shù)目： 2
功率耗散（最大）： 40mW
電壓電源： 單電源
工作溫度： -40°C ~ 125°C
安裝類型： 表面貼裝
封裝/外殼： 20-WQFN 裸露焊盤
供應(yīng)商設(shè)備封裝： 20-TQFN-EP（5x5）
包裝： 帶卷 (TR)
輸入數(shù)目和類型： 4 個(gè)單端，單極；4 個(gè)單端，雙極；2 個(gè)差分，單極；2 個(gè)差分，雙極
MAX1377/MAX1379/MAX1383
Dual, 12-Bit, 1.25Msps Simultaneous-Sampling
ADCs with Serial Interface
______________________________________________________________________________________
21
For CPOL = 0 and CPHA = 0 or CPOL = 1 and CPHA =
1, the data is clocked into the C on the rising edge of
SCLK. For CPOL = 0 and CPHA = 1 or CPOL = 1 and
CPHA = 0, the data is clocked into the C on the falling
edge of SCLK. The MAX1377/MAX1379/MAX1383 are
compatible with all CPOL/CPHA configurations since
the data is valid on the falling and rising edge of SCLK.
QSPI
Unlike SPI, which requires two 8-bit reads to acquire
the 12 bits of data from the ADC, QSPI allows the mini-
mum number of clock cycles necessary to clock in the
data. The MAX1377/MAX1379/MAX1383 require 16
clock cycles from the C to clock out the 12 bits of
data. The conversion result contains three zeros fol-
lowed by the 12 data bits, and a trailing zero with the
data in the MSB-first format.
Three-Phase Motor Controller
The MAX1377/MAX1379/MAX1383 are ideally suited for
motor-control systems (Figure 16). The devices’ simulta-
neously sampled inputs eliminate the need for complicat-
ed DSP algorithms that realign sequentially sampled
data into a simultaneous sample set. The ±10V
(MAX1383) input allows for standard industrial inputs,
eliminating the need for voltage-scaling amplifiers.
MAX1377
MAX1379
MAX1383
I/O
SCK
MISO1
MISO2
SS
3V TO 5V
CNVST
SCLK
DOUT1
DOUT2
MAX1377
MAX1379
MAX1383
SCK
MISO1
MISO2
SS
3V TO 5V
CNVST
SCLK
DOUT1
DOUT2
MAX1377
MAX1379
MAX1383
I/O
SK
SI1
SI2
CNVST
SCLK
DOUT1
DOUT2
A) SPI
B) QSPI
C) MICROWIRE
CS
Figure 15. Common Serial-Interface Connections to the
MAX1377/MAX1379/MAX1383
SUPPLIES
AVDD
AGND
DGND
VDD
DIGITAL
CIRCUITRY
OPTIONAL
FERRITE
BEAD
ANALOG
SUPPLY
RETURN
DIGITAL
SUPPLY
VL
GND
MAX1377
MAX1379
MAX1383
Figure 14. Power-Supply Grounding and Bypassing
SCLK
DOUT_
tDHOLD
tDOUT
Figure 13. Data Valid and Hold Times
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