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参数资料
| 型号： | MAX1415AEWE+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 13/36页 |
| 文件大小： | 0K |
| 描述： | IC ADC 16BIT DELTA SIGMA 16-SOIC |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 1,000 |
| 位数： | 16 |
| 采样率（每秒）： | 500 |
| 数据接口： | MICROWIRE?，QSPI?，串行，SPI? |
| 转换器数目： | 1 |
| 功率耗散（最大）： | 762mW |
| 电压电源： | 单电源 |
| 工作温度： | -45°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 16-SOIC（0.295"，7.50mm 宽） |
| 供应商设备封装： | 16-SOIC W |
| 包装： | 带卷 (TR) |
| 输入数目和类型： | 2 个差分，单极；2 个差分，双极 |
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MAX1415/MAX1416
To minimize gain errors in unbuffered mode, select a
source impedance less than the maximum values
shown in Figures 2 and 3. These are the maximum
external resistance/capacitance combinations allowed
before gain errors greater than 1 LSB are introduced in
unbuffered mode.
Enable the internal input buffer for a high source imped-
ance. This isolates the inputs from the sampling capaci-
tor and reduces the sampling-related gain error. When
using the internal buffer, limit the absolute input voltage
range to (VGND + 50mV) to (VDD - 1.5V). Properly set
up the gain and common-mode voltage range to mini-
mize linearity errors.
Input Voltage Range
In unbuffered mode, the absolute analog input voltage
range is from (GND - 30mV) to (VDD + 30mV) (see the
Electrical Characteristics section). In buffered mode,
the analog input voltage range is reduced to (GND +
50mV) to (VDD - 1.5V). In both buffered and unbuffered
modes, the differential analog input range (VAIN+ - VAIN-)
decreases at higher gains (see the Programmable Gain
Amplifier and Unipolar and Bipolar Modes sections).
Reference
The MAX1415/MAX1416 provide differential inputs,
REF+ and REF-, for an external reference voltage.
Connect the external reference directly across REF+ and
REF- to obtain the differential reference voltage, VREF.
The common-mode voltage range for VREF+ and VREF-
is between GND and VDD. For specified operation, the
nominal voltage, VREF is 1.225V for the MAX1415 and
2.5V for the MAX1416.
The MAX1415/MAX1416 sample REF+ and REF- at
fCLKIN/64 (CLKDIV = 0) or fCLKIN/128 (CLKDIV = 1)
with an internal 10pF (typ for gain = 1) sampling capac-
itor in series with a 7k
(typ) switch on-resistance.
Programmable Gain Amplifier
A PGA provides selectable levels of gain: 1, 2, 4, 8, 16,
32, 64, and 128. Bits G0, G1, and G2 in the setup reg-
ister control the gain (see Table 9). As the gain increas-
es, the value of the input sampling capacitor, CSAMP,
also increases (see Table 5). The dynamic load pre-
sented to the analog inputs increases with clock fre-
quency and gain in unbuffered mode (see the Input
Buffers section and Figure 1).
16-Bit, Low-Power, 2-Channel,
Sigma-Delta ADCs
20
______________________________________________________________________________________
HIGH-
IMPEDANCE
INPUT
RSW (7k
TYP)
CTOTAL(7pF TYP FOR GAIN = 1)
AIN(+)
AIN(-)
VBIAS
CTOTAL = CSAMP + CSTRAY
Figure 1. Unbuffered Analog Input Structure
MAXIMUM EXTERNAL RESISTANCE
vs. MAXIMUM EXTERNAL CAPACITANCE (1MHz)
0.1
1
10
100
1
10
100
1000
10,000
EXTERNAL CAPACITANCE (pF)
EXTERNAL
RESIST
ANCE
(k
)
GAIN = 1
GAIN = 2
GAIN = 4
GAIN = 8 TO 128
Figure 2. Maximum External Resistance vs. Maximum External
Capacitance for Unbuffered Mode (1MHz)
MAXIMUM EXTERNAL RESISTANCE
vs. MAXIMUM EXTERNAL CAPACITANCE
(2.4576MHz)
0.1
1
10
100
1
10
100
1000
10,000
EXTERNAL CAPACITANCE (pF)
EXTERNAL
RESIST
ANCE
(k
)
GAIN = 2
GAIN = 4
GAIN = 8 TO 128
GAIN = 1
Figure 3. Maximum External Resistance vs. Maximum External
Capacitance for Unbuffered Mode (2.4576MHz)
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX1415ENE | 制造商:Maxim Integrated Products 功能描述:16-BIT, LOW-POWER, 2-CHANNEL, SIGMA-DELTA ADC - Rail/Tube |
| MAX1415EPE | 功能描述:模数转换器 - ADC RoHS:否 制造商:Texas Instruments 通道数量:2 结构:Sigma-Delta 转换速率:125 SPs to 8 KSPs 分辨率:24 bit 输入类型:Differential 信噪比:107 dB 接口类型:SPI 工作电源电压:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-32 |
| MAX1415EPE+ | 功能描述:模数转换器 - ADC 16-Bit 2Ch .5ksps 1.75V Precision ADC RoHS:否 制造商:Texas Instruments 通道数量:2 结构:Sigma-Delta 转换速率:125 SPs to 8 KSPs 分辨率:24 bit 输入类型:Differential 信噪比:107 dB 接口类型:SPI 工作电源电压:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-32 |
| MAX1415EUE | 功能描述:模数转换器 - ADC RoHS:否 制造商:Texas Instruments 通道数量:2 结构:Sigma-Delta 转换速率:125 SPs to 8 KSPs 分辨率:24 bit 输入类型:Differential 信噪比:107 dB 接口类型:SPI 工作电源电压:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-32 |
| MAX1415EUE+ | 功能描述:模数转换器 - ADC 16-Bit 2Ch .5ksps 1.75V Precision ADC RoHS:否 制造商:Texas Instruments 通道数量:2 结构:Sigma-Delta 转换速率:125 SPs to 8 KSPs 分辨率:24 bit 输入类型:Differential 信噪比:107 dB 接口类型:SPI 工作电源电压:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-32 |
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