參數(shù)資料
型號(hào)： MAX1377ATP+
廠商： Maxim Integrated Products
文件頁(yè)數(shù)： 8/25頁(yè)
文件大?。?/td> 0K
描述： IC ADC 12BIT 1.25MSPS DL 20-TQFN
產(chǎn)品培訓(xùn)模塊： Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
標(biāo)準(zhǔn)包裝： 60
位數(shù)： 12
采樣率（每秒）： 1.25M
數(shù)據(jù)接口： DSP，MICROWIRE?，QSPI?，串行，SPI?
轉(zhuǎn)換器數(shù)目： 2
功率耗散（最大）： 40mW
電壓電源： 單電源
工作溫度： -40°C ~ 125°C
安裝類(lèi)型： 表面貼裝
封裝/外殼： 20-WQFN 裸露焊盤(pán)
供應(yīng)商設(shè)備封裝： 20-TQFN-EP（5x5）
包裝： 管件
輸入數(shù)目和類(lèi)型： 4 個(gè)單端，單極；4 個(gè)單端，雙極；2 個(gè)差分，單極；2 個(gè)差分，雙極
產(chǎn)品目錄頁(yè)面： 1396 (CN2011-ZH PDF)
MAX1377/MAX1379/MAX1383
Dual, 12-Bit, 1.25Msps Simultaneous-Sampling
ADCs with Serial Interface
16
______________________________________________________________________________________
the MAX1383, the signal bandwidth is limited to 100kHz
by specification. Since ±10V signals are divided down to
a 2.5V range, this version should only be used with sig-
nals greater than 5V. For those applications with signals
5V or less, use the MAX1377/MAX1379 for best SNR per-
formance. The configuration is shown on Figure 3b.
Input Bandwidth
The ADC’s input-tracking circuitry has a 5MHz small-
signal bandwidth, allowing the ADC to digitize high-
speed transient events and measure periodic signals
with bandwidths exceeding the ADC’s sampling rate by
using undersampling techniques. To avoid high-fre-
quency signals being aliased into the frequency band
of interest, anti-alias filtering is recommended.
Analog Input Protection
Internal protection diodes that clamp the analog input
to AVDD and AGND allow the analog inputs to swing
from AGND - 0.3V to AVDD + 0.3V without damage to
the MAX1377 and MAX1379. The MAX1383 can handle
±10V input swings. All inputs must not exceed the stat-
ed ranges for accurate conversions.
Internal Reference Mode
Drive REFSEL low to select internal reference mode. The
MAX1377 includes an on-chip 2.048V reference; the
MAX1379 has a 4.096V reference; and the MAX1383
includes a 2.5V internal reference. The reference output
at REF can be used as a reference voltage source for
other components. REF can source up to 2mA. Bypass
REF with a 10nF capacitor and a 4.7F capacitor to
RGND. It is important to select a low ESR capacitor and
keep the trace resistance as low as possible.
DIGIT
AL
OUTPUT
CODE
111...111
111...110
000...000
000...001
INPUT VOLTAGE (LSB)
FS
FS - 3/2 LSB
FULL-SCALE
TRANSITION
111...101
000...011
000...010
FS = VREF
ZS = 0
1 LSB =
VREF
4096
0
1
2
3
Figure 4a. MAX1377/MAX1379 Unipolar Transfer Function (U/B
= Low)
DIGIT
AL
OUTPUT
CODE
011...111
011...100
100...000
100...001
DIFFERENTIAL INPUT VOLTAGE (LSB)
+FS
VREF - 1 LSB
+FS - 3/2 LSB
FULL-SCALE
TRANSITION
000...000
111...111
111...110
+FS =
VREF
2
ZS = 0
1 LSB =
VREF
4096
-FS
000...010
000...001
111...101
-FS =
-VREF
2
MAX1377/
MAX1379
MAX1383
+FS = 4VREF
ZS = 0
-FS = -4VREF
1 LSB =
8 x VREF
4096
Figure 5. Bipolar Transfer Function (U/B = High)
T/H
3pF
R2
R4
REF (2.5V)
R1
R3
INTERNAL
SIGNAL
GROUND
INPUT
RIN ~ 11K (typ)
INA
Figure 3b. MAX1383 Equivalent Input Circuit
DIGIT
AL
OUTPUT
CODE
111...111
111...110
000...000
000...001
INPUT VOLTAGE (LSB)
FULL-SCALE
TRANSITION
111...101
000...011
000...010
MAX1383
+FS = 4VREF
-FS = -4VREF
ZS = 0
1 LSB =
8 x VREF
4096
+FS
VREF - 1 LSB
+FS - 3/2 LSB
-FS
Figure 4b. MAX1383 Single-Ended Input
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MAX1377ATP+ 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 12-Bit 4Ch 1.25Msps 3.6V Precision 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(lèi)型:Differential 信噪比:107 dB 接口類(lèi)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
MAX1377ATP+T 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 12-Bit 4Ch 1.25Msps 3.6V Precision 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(lèi)型:Differential 信噪比:107 dB 接口類(lèi)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
MAX1379ATP+ 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 12-Bit 4Ch 1.25Msps 5.25V Precision 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(lèi)型:Differential 信噪比:107 dB 接口類(lèi)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
MAX1379ATP+T 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 12-Bit 4Ch 1.25Msps 5.25V Precision 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(lèi)型:Differential 信噪比:107 dB 接口類(lèi)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
MAX1379EVKIT+ 功能描述:數(shù)據(jù)轉(zhuǎn)換 IC 開(kāi)發(fā)工具 MAX1379 Eval Kit RoHS:否 制造商:Texas Instruments 產(chǎn)品:Demonstration Kits 類(lèi)型:ADC 工具用于評(píng)估:ADS130E08 接口類(lèi)型:SPI 工作電源電壓:- 6 V to + 6 V
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