参数资料
型号: MAX1107EUB+
厂商: Maxim Integrated Products
文件页数: 6/16页
文件大小: 0K
描述: IC ADC 8BIT LP 10-UMAX
产品培训模块: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
标准包装: 50
位数: 8
采样率(每秒): 25k
数据接口: MICROWIRE?,QSPI?,串行,SPI?
转换器数目: 1
功率耗散(最大): 580µW
电压电源: 单电源
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 10-TFSOP,10-MSOP(0.118",3.00mm 宽)
供应商设备封装: 10-µMAX
包装: 管件
输入数目和类型: 2 个单端,单极;1 个伪差分,单极
产品目录页面: 1395 (CN2011-ZH PDF)
MAX1106/MAX1107
Single-Supply, Low-Power,
Serial 8-Bit ADCs
14
______________________________________________________________________________________
When operating at speeds below the maximum sam-
pling rate, the MAX1106/MAX1107’s power-down mode
can save considerable power by placing the converter
in a low-current shutdown state between conversions.
Pull SHDN low after the conversion byte has been read
to shut down the device completely.
CONVST should remain low most of the time and tog-
gled high for 1s (100s max) for the autozero adjust-
ment. An external reference is recommended for best
accuracy when using the shutdown feature. This
requires only 20s for the internal biasing circuit to sta-
bilize before starting a new conversion. Alternatively,
the internal reference can be used, but additional time
is required for the reference to stabilize (when
bypassed by a 1F capacitor; at data rates above
1ksps, the reference stabilizes within 1LSB in 200s). If
the reference is completely discharged it requires
12ms to settle. No conversions should be performed
until the reference voltage has stabilized.
Internal or External Voltage Reference
An external reference between 1V and VDD should be
connected directly at the REFIN pin. To use the internal
reference, connect REFOUT directly to REFIN and
bypass REFOUT with a 1F capacitor. The DC input
impedance at REFIN is extremely high, consisting of
leakage current only (typically 10nA). During a conver-
sion, the reference must be able to deliver up to 20A
average load current and have an output impedance of
1k
or less at the conversion clock frequency. If the
reference has higher output impedance or is noisy,
bypass it close to the REFIN pin with a 0.1F capacitor.
The internal reference is active as long as SHDN is high
and powers down when SHDN is low.
Transfer Function
Figure 9 depicts the input/output transfer function.
Code transitions occur at integer LSB values. Output
coding is binary; with a 2.048V reference 1LSB = 8mV
(VREFIN / 256). For single-ended operation connect IN-
to GND. Full-scale is achieved at VIN+ = VREFIN - 1LSB.
For pseudo-differential operation the VIN- voltage range
is from GND to VDD, where full-scale is achieved at
VIN+ = VREFIN + VIN- - 1LSB. VIN+ should not be higher
than VDD + 50mV. Negative input voltages are invalid
and give a zero output code. Voltages greater than full-
scale give an all ones output code.
OUTPUT CODE
FULL-SCALE
TRANSITION
11111111
11111110
11111101
00000011
00000010
00000001
00000000
12
3
0
FS
FS - 1LSB
FS = VREFIN + VIN-
1LSB = VREFIN
256
INPUT VOLTAGE (LSB)
(IN-)
Figure 9. Input/Output Transfer Function
相关PDF资料
PDF描述
VI-B4N-IV-F2 CONVERTER MOD DC/DC 18.5V 150W
MAX1106EUB+ IC ADC 8BIT LP 10-UMAX
VI-B4N-IV-F1 CONVERTER MOD DC/DC 18.5V 150W
VI-B4M-IV-F4 CONVERTER MOD DC/DC 10V 150W
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MAX1107EUB+T 功能描述:模数转换器 - ADC Single-Supply Low-P Serial 8-Bit 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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