參數(shù)資料
型號： MAX1416EWE+
廠商： Maxim Integrated Products
文件頁數(shù)： 14/36頁
文件大小： 0K
描述： IC ADC 16BIT DELTA SIGMA 16-SOIC
產(chǎn)品培訓模塊： MAX11200 ADC
Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
標準包裝： 46
位數(shù)： 16
采樣率（每秒）： 500
數(shù)據(jù)接口： MICROWIRE?，QSPI?，串行，SPI?
轉換器數(shù)目： 1
功率耗散（最大）： 762mW
電壓電源： 單電源
工作溫度： -45°C ~ 85°C
安裝類型： 表面貼裝
封裝/外殼： 16-SOIC（0.295"，7.50mm 寬）
供應商設備封裝： 16-SOIC W
包裝： 管件
輸入數(shù)目和類型： 2 個差分，單極；2 個差分，雙極
Increasing the gain increases the resolution of the ADC
(LSB size decreases), but reduces the differential input
voltage range. Calculate 1 LSB in unipolar mode using
the following equation:
where: VREF = VREF+ - VREF-.
For a gain of 1 and VREF = 2.5V, the full-scale voltage
in unipolar mode is 2.5V and 1 LSB
≈ 38.1V. For a
gain of 4, the full-scale voltage in unipolar mode is
0.625V (VREF/GAIN) and 1 LSB
≈ 9.5V. The differential
input voltage range in this example reduces from 2.5V
to 0.625V, and the resolution increases since the LSB
size decreases from 38.1V to 9.5V.
Calculate 1 LSB in bipolar mode using the following
equation:
where: VREF = VREF+ - VREF-.
Unipolar and Bipolar Modes
The
B/U bit in the setup register (Table 9) configures
the MAX1415/MAX1416 for unipolar or bipolar transfer
functions. Figures 4 and 5 illustrate the unipolar and
bipolar transfer functions, respectively.
In unipolar mode, the digital output code is straight
binary. When AIN+ = AIN-, the outputs are at zero
scale, which is the lower endpoint of the transfer func-
tion. The full-scale endpoint is given by AIN+ - AIN- =
VREF / GAIN, where VREF = VREF+ - VREF-.
In bipolar mode, the digital output code is in offset
binary. Positive full scale is given by AIN+ - AIN- =
+VREF / GAIN and negative full scale is given by AIN+ -
AIN- = -VREF / GAIN. When AIN+ = AIN-, the outputs
are at zero scale, which is the midpoint of the bipolar
transfer function.
When the MAX1415/MAX1416 are in buffered mode, the
absolute and common-mode analog input voltage
ranges reduce to between (GND + 50mV) and (VDD -
1.5V). The differential input voltage range is not affected
in buffered mode.
1
65 536
2
(,
)
LSB
V
GAIN
REF
=×
1
65 536
(,
)
LSB
V
GAIN
REF
=
MAX1415/MAX1416
16-Bit, Low-Power, 2-Channel,
Sigma-Delta ADCs
______________________________________________________________________________________
21
Table 5. Input Sampling Capacitor vs. Gain
GAIN
INPUT SAMPLING CAPACITOR (CSAMP)
(pF)
1
3.75
2
7.5
415
8–128
30
01
2
3
0000 0000 0000 0000
0000 0000 0000 0001
0000 0000 0000 0010
0000 0000 0000 0011
FULL-SCALE TRANSITION
1 LSB =
VREF
(GAIN) (65,536)
65,535
65,533
DIFFERENTIAL INPUT VOLTAGE (LSB)
1111 1111 1111 1101
1111 1111 1111 1110
1111 1111 1111 1111
1111 1111 1111 1100
VREF/GAIN
V
REF
/GAIN
BINAR
Y
OUTPUT
CODE
Figure 4. MAX1415/MAX1416 Unipolar Transfer Function
1 LSB =
VREF
(GAIN) (65,536)
0+1
-1
0000 0000 0000 0000
0000 0000 0000 0001
0000 0000 0000 0010
+32,767
BINAR
Y
OUTPUT
CODE
+32,765
1111 1111 1111 1101
1111 1111 1111 1110
1111 1111 1111 1111
1000 0000 0000 0000
1000 0000 0000 0001
0111 1111 1111 1111
x 2
-32,768
-32,766
DIFFERENTIAL INPUT VOLTAGE (LSB)
VREF/GAIN
V
REF
/GAIN
V
REF
/GAIN
Figure 5. MAX1415/MAX1416 Bipolar Transfer Function
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參數(shù)描述
MAX1416EWE+ 功能描述:模數(shù)轉換器 - ADC 16-Bit 2Ch .5ksps 3.5V Precision 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
MAX1416EWE+T 功能描述:模數(shù)轉換器 - ADC 16-Bit 2Ch .5ksps 3.5V Precision 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
MAX1416EWE-T 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
MAX1418ETN+D 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述:
MAX1418ETN+TD 制造商:Maxim Integrated Products 功能描述:- Tape and Reel
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