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參數(shù)資料
| 型號： | MAX1409CAP+T |
| 廠商： | Maxim Integrated Products |
| 文件頁數(shù)： | 8/48頁 |
| 文件大小： | 0K |
| 描述： | IC DAS 16BIT LP 20-SSOP |
| 產品培訓模塊： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 標準包裝： | 2,000 |
| 類型： | 數(shù)據采集系統(tǒng)（DAS） |
| 分辨率（位）： | 16 b |
| 采樣率（每秒）： | 60 |
| 數(shù)據接口： | 串行 |
| 電壓電源： | 模擬和數(shù)字 |
| 電源電壓： | 2.7 V ~ 3.6 V |
| 工作溫度： | 0°C ~ 70°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 20-SSOP（0.209"，5.30mm 寬） |
| 供應商設備封裝： | 20-SSOP |
| 包裝： | 帶卷 (TR) |
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MAX1407/MAX1408/MAX1409/MAX1414
Low-Power, 16-Bit Multichannel DAS with
Internal Reference,10-Bit DACs, and RTC
16
______________________________________________________________________________________
With the use of two external resistors, the DAC output
can go from 0.05V to AVDD - 0.2V. The ADCs and
DACs both utilize a precise low-drift 1.25V internal
bandgap reference for conversions and setting of the
full-scale range. For applications that require increased
accuracy, power-down the internal reference and con-
nect an external reference at REF. The RTC is leap year
compensated until 9999 and provides an alarm function
that can be used to wake-up the system or cause an
interrupt at a predefined time. The power-supply volt-
age monitors detect when AVDD falls below a trip
threshold voltage at either +1.8V or +2.7V causing the
reset to be asserted. The 4-wire serial interface is used
to communicate directly between SPI, QSPI, and
MICROWIRE devices for system configuration and
readback functions.
Analog Input Protection
Internal protection diodes clamp the analog input to
AVDD and AGND, which allow the channel input pins to
swing from AGND - 0.3V to AVDD + 0.3V without dam-
age. However, for accurate conversions near full scale,
the inputs must not exceed AVDD by more than 50mV
or be lower than AGND by 50mV.
Analog Mux
The MAX1407/MAX1408/MAX1414 include a dual 8 to 1
multiplexer for the positive and negative inputs of the
ADC. The MAX1409 has a dual 4 to 1 multiplexer at the
inputs of the ADC. Figures 1, 2, and 3 illustrate which
signals are present at the inputs of each multiplexer for
the MAX1407/MAX1408/MAX1409/MAX1414. The
MUXP and MUXN bits of the MUX register choose
which inputs will be seen at the input to the ADC
(Tables 4 and 5) and the signal-detect comparator. See
the MUX Register description under the On-Chip
Registers section for multiplexer functionality.
Input Buffers
The MAX1407/MAX1408/MAX1409/MAX1414 provide
input buffers to isolate the analog inputs from the capaci-
tive load presented by the ADC modulator (Figure 5 and
6). The buffers are chopper stabilized to reduce the effect
of their DC offsets and low-frequency noise. Since the
buffers can represent more than 25% of the total analog
power dissipation (typically 220A), they may be shut
down in applications where minimum power dissipation is
required and the capacitive input load is not a concern
(see ADC and Power1 Registers). Disable the buffers in
applications where the inputs must operate close to
AGND or above +1.4V. The buffers are individually
enabled or disabled.
Figure 1. MAX1407/MAX1414 Functional Diagram
MAX1407/MAX1414
*MAX1414 HAS A +50mV SIGNAL-DETECT COMPARATOR THRESHOLD.
10-BIT DAC
INTERRUPT
GENERATOR
REF
RESET
DGND
16-BIT ADC
PGA
BUF
WAKE-UP
LOGIC
SERIAL
INTERFACE
2.4576MHz
PLL
32.768kHz
OSCILLATOR
1.25V
BANDGAP
REFERENCE
1.8V/2.7V
P
SUPERVISORS
RESET
GENERATOR
RTC AND
ALARM
DIGITAL
OUTPUT
10-BIT DAC
8:1
INPUT
MUX
8:1
INPUT
MUX
BUF
AGND
CPLL
FOUT
CLKIN
CLKOUT
COMPARATOR
AVDD
SCLK
DIN
DOUT
OUT2
OUT1
IN3
IN2
IN1
IN0
REF
AVDD
FB2
FB1
IN3
IN2
IN1
IN0
REF
AGND
WU2
WU1
SHDN
INT
DRDY
D0
OUT1
FB1
OUT2
FB2
DVDD
CS
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| MAX1409EAP | 制造商:Maxim Integrated Products 功能描述:LOW-POWER, 16-BIT MULTICHANNEL DAS WITH INTER - Bulk |
| MAX140C/D | 功能描述:模數(shù)轉換器 - ADC RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結構:Sigma-Delta 轉換速率: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 |
| MAX140CMH | 制造商:Maxim Integrated Products 功能描述:44 PINS MQFP PKG - Bulk |
| MAX140CMH+ | 制造商:Maxim Integrated Products 功能描述:ADC SGL DUAL SLOPE 3 1/2DIGIT LED 44MQFP - Rail/Tube |
| MAX140CMH+D | 功能描述:模數(shù)轉換器 - ADC 3 1/2 Dgt ADC w/Ref CPump LED Drivers RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結構:Sigma-Delta 轉換速率: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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