參數(shù)資料
型號(hào)： MAX1296AEEG+
廠商： Maxim Integrated Products
文件頁(yè)數(shù)： 7/19頁(yè)
文件大?。?/td> 0K
描述： IC ADC 12BIT 420KSPS 24-QSOP
產(chǎn)品培訓(xùn)模塊： Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
標(biāo)準(zhǔn)包裝： 50
位數(shù)： 12
采樣率（每秒）： 420k
數(shù)據(jù)接口： 并聯(lián)
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： -40°C ~ 85°C
安裝類型： 表面貼裝
封裝/外殼： 24-SSOP（0.154"，3.90mm 寬）
供應(yīng)商設(shè)備封裝： 24-QSOP
包裝： 管件
輸入數(shù)目和類型： 2 個(gè)單端，單極；2 個(gè)單端，雙極；1 個(gè)偽差分，單極；1 個(gè)偽差分，雙極
MAX1294/MAX1296
420ksps, +5V, 6-/2-Channel, 12-Bit ADCs
with +2.5V Reference and Parallel Interface
______________________________________________________________________________________
15
Shutdown Mode
Shutdown mode turns off all chip functions that draw
quiescent current, reducing the typical supply current
to 2A immediately after the current conversion is com-
pleted. A rising edge on WR causes the MAX1294/
MAX1296 to exit shutdown mode and return to normal
operation. To achieve full 12-bit accuracy with a 4.7F
reference bypass capacitor, 500s is required after
power-up. Waiting 500s in standby mode, instead of
in full-power mode, can reduce power consumption by
a factor of three or more. When using an external refer-
ence, only 50s is required after power-up. Enter
standby mode by performing a dummy conversion with
the control byte specifying standby mode.
Note: Bypass capacitors larger than 4.7F between
REF and GND result in longer power-up delays.
Transfer Function
Table 5 shows the full-scale voltage ranges for unipolar
and bipolar modes. Figures 8 depicts the nominal
unipolar input/output (I/O) transfer function, and Figure 9
shows the bipolar I/O transfer function. Code transitions
occur halfway between successive-integer LSB values.
Output coding is binary, with 1 LSB = (VREF / 4096).
Maximum Sampling Rate/
Achieving 475ksps
When running at the maximum clock frequency of
7.6MHz, the specified throughput of 420ksps is
achieved by completing a conversion every 18 clock
cycles: 1 write cycle, 3 acquisition cycles, 13 conver-
sion cycles, and 1 read cycle. This assumes that the
results of the last conversion are read before the next
control byte is written. It is possible to achieve higher
throughputs, up to 475ksps, by first writing a control
byte to begin the acquisition cycle of the next conver-
sion, and then reading the results of the previous con-
version from the bus. This technique (Figure 10) allows
a conversion to be completed every 16 clock cycles.
Note that the switching of the data bus during acquisi-
Table 5. Full Scale and Zero Scale for Unipolar and Bipolar Operation
111 . . . 111
111 . . . 110
100 . . . 010
100 . . . 001
100 . . . 000
011 . . . 111
011 . . . 110
011 . . . 101
000 . . . 001
000 . . . 000
1
0
INPUT VOLTAGE (LSB)
OUTPUT CODE
ZS = COM
FS = REF + COM
1 LSB =
REF
4096
FULL-SCALE
TRANSITION
(COM)
FS - 3/2 LSB
FS
2
2048
UNIPOLAR MODE
BIPOLAR MODE
VREF + COM
VREF/2 + COM
Positive Full Scale
Full Scale
COM
Zero Scale
—
-VREF/2 + COM
Negative Full Scale
—
Figure 8. Unipolar Transfer Functions
011 . . . 111
011 . . . 110
000 . . . 010
000 . . . 001
000 . . . 000
111 . . . 111
111 . . . 110
111 . . . 101
100 . . . 001
100 . . . 000
- FS
COM*
INPUT VOLTAGE (LSB)
OUTPUT CODE
ZS = COM
+FS - 1 LSB
+ COM
FS =
REF
2
-FS =
+ COM
-REF
2
1 LSB =
REF
4096
*COM
≥ VREF / 2
Figure 9. Bipolar Transfer Functions
相關(guān)PDF資料
PDF描述
UP050SL110J-KFC CAP CER 11PF 50V 5% AXIAL
VI-2T0-IV-B1 CONVERTER MOD DC/DC 5V 150W
VE-2TT-IW-F1 CONVERTER MOD DC/DC 6.5V 100W
97-3106A-20-15P CONN PLUG 7POS W/PINS
VI-25T-IV-B1 CONVERTER MOD DC/DC 6.5V 150W
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MAX1296AEEG+ 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 12-Bit 2Ch 420ksps 5.5V 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
MAX1296AEEG+T 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 12-Bit 2Ch 420ksps 5.5V 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
MAX1296AEEG-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
MAX1296BCEG 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
MAX1296BCEG+ 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 12-Bit 2Ch 420ksps 5.5V 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
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。

采購(gòu)需求

(若只采購(gòu)一條型號(hào)，填寫(xiě)一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

*型號(hào) *數(shù)量 廠商 批號(hào) 封裝
添加更多采購(gòu)

我的聯(lián)系方式

*
*
*