參數(shù)資料
型號(hào)： MAX110ACWE+
廠商： Maxim Integrated Products
文件頁(yè)數(shù)： 24/24頁(yè)
文件大?。?/td> 0K
描述： IC ADC SERIAL 2CH 14BIT 16-SOIC
產(chǎn)品培訓(xùn)模塊： Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
標(biāo)準(zhǔn)包裝： 46
位數(shù)： 14
采樣率（每秒）： 50
數(shù)據(jù)接口： MICROWIRE?，QSPI?，串行，SPI?
轉(zhuǎn)換器數(shù)目： 1
功率耗散（最大）： 762mW
電壓電源： 單電源
工作溫度： 0°C ~ 70°C
安裝類型： 表面貼裝
封裝/外殼： 16-SOIC（0.295"，7.50mm 寬）
供應(yīng)商設(shè)備封裝： 16-SOIC W
包裝： 管件
輸入數(shù)目和類型： 4 個(gè)單端，單極；2 個(gè)差分，雙極
MAX110/MAX111
Low-Cost, 2-Channel, ±14-Bit Serial ADCs
_______________________________________________________________________________________
9
_______________Detailed Description
The MAX110/MAX111 ADC converts low-frequency
analog signals to a 16-bit serial digital output (14 data
bits, a sign bit, and an overrange bit) using a first-order
sigma-delta loop (Figure 1). The differential input volt-
age is internally connected to a precision voltage-to-
current converter. The resulting current is integrated
and applied to a comparator. The comparator output
then drives an up/down counter and a 1-bit DAC. When
the DAC output is fed back to the integrator input, the
sigma-delta loop is completed.
During a conversion, the comparator output is a VREF-
to VREF+ square wave; its duty cycle is proportional to
the magnitude of the differential input voltage applied
to the ADC. The up/down counter clocks data in from
the comparator at the oversampling clock rate and
averages the pulse-width-modulated (PWM) square
wave to produce the conversion result. A 16-bit static
shift register stores the result at the end of the conver-
sion. Figure 2 shows the ADC waveforms for a differen-
tial analog input equal to 1/2 (VREF+ - VREF-). The
resulting comparator and 1-bit DAC outputs are high
for seven cycles and low for three cycles of the over-
sampling clock.
Since the analog input signal is integrated over many
clock cycles, much of the signal and quantization noise
is attenuated. The more clock cycles allowed during
each conversion, the greater the noise attenuation (see
Programming Conversion Time).
______________________________________________________________Pin Description
Clock Input / RC Oscillator Output. TTL/CMOS-compatible oversampling clock input
when RCSEL = GND. Connects to the internal RC oscillator when RCSEL = VDD. XCLK
must be connected to VDD or GND through a resistor (1M or less) when RC OSC
mode is selected.
XCLK
8
Serial Clock Input. TTL/CMOS-compatible clock input for serial-interface data I/O.
SCLK
9
Busy Output. Goes low at conversion start, and returns high at end of conversion.
BUSY
10
Positive Power-Supply Input—connect to +5V
VDD
6
RC Select Input. Connect to GND to select external clock mode. Connect to VDD to
select RC OSC mode. XCLK must be connected to VDD or GND through a resistor
(1M
or less) when RC OSC mode is selected.
RCSEL
7
Positive Reference Input
REF+
3
Negative Reference Input
REF-
2
Channel 1 Positive Analog Input
IN1+
1
FUNCTION
NAME
SSOP
6
7
8
4
5
3
2
PIN
1
DIP/SO
Chip-Select Input. Pull this input low to perform a control-word-write/data-read opera-
tion. A conversion begins when CS returns high, provided NO-OP is a 1. See the sec-
tion
Using the MAX110/MAX111 with SPI, QSPI, and MICROWIRE Serial Interfaces.
CS
11
9
Serial Data Output. High-impedance when CS is high.
DOUT
12
10
Serial Data Input. See
Control Register section.
DIN
13
11
Digital Ground
GND
16
12
MAX110 Negative Power-Supply Input—connect to -5V
VSS
Channel 2 Negative Analog Input
IN2-
18
14
Channel 2 Positive Analog Input
IN2+
19
15
Channel 1 Negative Analog Input
IN1-
20
16
No Connect—there is no internal connection to this pin
N.C.
4, 5, 14, 15
—
MAX111 Analog Ground
AGND
17
13
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MAX110ACWE+ 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 2Ch +/-14Bit Serial 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(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-32
MAX110ACWE+T 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 2Ch +/-14Bit Serial 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(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-32
MAX110ACWE-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(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-32
MAX110AEAP 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(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-32
MAX110AEAP-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(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-32
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