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參數(shù)資料
| 型號： | MAX1067CEEE |
| 廠商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分類： | ADC |
| 英文描述： | Multichannel, 14-Bit, 200ksps Analog-to-Digital Converters |
| 中文描述： | 4-CH 14-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, PDSO16 |
| 封裝： | 0.150 INCH, 0.250 INCH PITCH, MO-137AB, QSOP-16 |
| 文件頁數(shù)： | 11/30頁 |
| 文件大小： | 447K |
| 代理商： | MAX1067CEEE |
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Detailed Description
The MAX1067/MAX1068 low-power, multichannel, 14-
bit ADCs feature a successive-approximation ADC,
automatic power-down, integrated +4.096V reference,
and a high-speed SPI/QSPI/MICROWIRE-compatible
interface. A DSPR input and DSPX output allow the
MAX1068 to communicate with DSPs with no external
glue logic. The MAX1067/MAX1068 operate with a sin-
gle +5V analog supply and feature a separate digital
supply allowing direct interfacing with +2.7V to +5.5V
digital logic.
Figures 3 and 4 show the functional diagrams of the
MAX1067/MAX1068, and Figures 5 and 6 show the
MAX1067/MAX1068 in a typical operating circuit. The
serial interface simplifies communication with micro-
processors (μPs).
In external reference mode, the MAX1067/MAX1068
have two power modes: normal mode and shutdown
mode. Driving
CS
high places the MAX1067/MAX1068
in shutdown mode, reducing the supply current to
0.6μA (typ). Pull
CS
low to place the MAX1067/
MAX1068 in normal operating mode. The internal refer-
ence mode offers software-programmable, power-down
options as shown in Table 5.
In SPI/QSPI/MICROWIRE mode, a falling edge on
CS
wakes the analog circuitry and allows SCLK to clock in
data. Acquisition and conversion are initiated by SCLK.
The conversion result is available at DOUT in unipolar
serial format. DOUT is held low until data becomes
available (MSB first) on the 8th falling edge of SCLK
when in 8-bit transfer mode, and on the 16th falling
edge when in 16-bit transfer mode. See the
Operating
Modes
section. Figure 8 shows the detailed SPI/QSPI/
MICROWIRE serial-interface timing diagram.
In external clock mode, the MAX1068 also interfaces
with DSPs. In DSP mode, a frame-sync pulse from the
DSP initiates a conversion that is driven by SCLK. The
MAX1068 formats a frame-sync pulse to notify the DSP
that the conversion results are available at DOUT in
MSB-first, unipolar, serial-data format. Figure 16 shows
the detailed DSP serial-interface timing diagram (see the
Operating Modes
section).
Analog Input
Figure 7 illustrates the input-sampling architecture of
the ADC. The voltage applied at REF or the internal
+4.096V reference sets the full-scale input voltage.
Track/Hold (T/H)
In track mode, the analog signal is acquired on the
internal hold capacitor. In hold mode, the T/H switches
open and the capacitive digital-to-analog converter
(DAC) samples the analog input.
M
Multichannel, 14-Bit, 200ksps Analog-to-Digital
Converters
______________________________________________________________________________________
11
Pin Description (continued)
PIN
MAX1067
MAX1068
NAME
FUNCTION
—
13
AIN6
Analog Input 6
—
14
AIN7
Analog Input 7
—
23
DSPX
DSP Frame-Sync Transmit Output. A frame-sync pulse at DSPX notifies the DSP that the
MSB data is available at DOUT. Leave DSPX unconnected when not in DSP mode.
—
24
N.C.
No Connection. Not internally connected.
DGND
1mA
C
LOAD
= 30pF
DOUT
DOUT
C
LOAD
= 30pF
1mA
DGND
DV
DD
a) V
OL
TO V
OH
b) HIGH-Z TO V
OL
AND V
OH
TO V
OL
Figure 1. Load Circuits for DOUT Enable Time and SCLK-to-
DOUT Delay Time
DGND
1mA
C
LOAD
= 30pF
DOUT
DOUT
C
LOAD
= 30pF
1mA
DGND
DV
DD
a) V
OH
TO HIGH-Z
b) V
OL
TO HIGH-Z
Figure 2. Load Circuits for DOUT Disable Time
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相關代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX1067CEEE-T | 功能描述:模數(shù)轉(zhuǎn)換器 - ADC RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結(jié)構(gòu):Sigma-Delta 轉(zhuǎn)換速率:125 SPs to 8 KSPs 分辨率:24 bit 輸入類型:Differential 信噪比:107 dB 接口類型:SPI 工作電源電壓:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-32 |
| MAX1068 | 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:MAX1168 Evaluation Kit/Evaluation System |
| MAX1068ACEG | 功能描述:模數(shù)轉(zhuǎn)換器 - ADC RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結(jié)構(gòu):Sigma-Delta 轉(zhuǎn)換速率:125 SPs to 8 KSPs 分辨率:24 bit 輸入類型:Differential 信噪比:107 dB 接口類型:SPI 工作電源電壓:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-32 |
| MAX1068ACEG+ | 功能描述:模數(shù)轉(zhuǎn)換器 - ADC MultiCh 14-Bit 200ksps RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結(jié)構(gòu):Sigma-Delta 轉(zhuǎn)換速率:125 SPs to 8 KSPs 分辨率:24 bit 輸入類型:Differential 信噪比:107 dB 接口類型:SPI 工作電源電壓:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-32 |
| MAX1068ACEG+T | 功能描述:模數(shù)轉(zhuǎn)換器 - ADC MultiCh 14-Bit 200ksps RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結(jié)構(gòu):Sigma-Delta 轉(zhuǎn)換速率:125 SPs to 8 KSPs 分辨率:24 bit 輸入類型:Differential 信噪比:107 dB 接口類型:SPI 工作電源電壓:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-32 |
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