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參數(shù)資料
| 型號： | MAX1191ETI+T |
| 廠商： | Maxim Integrated Products |
| 文件頁數(shù)： | 6/27頁 |
| 文件大小： | 0K |
| 描述： | IC ADC 8BIT 7.5MSPS DL 28-TQFN |
| 產(chǎn)品培訓(xùn)模塊： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 標(biāo)準(zhǔn)包裝： | 2,500 |
| 位數(shù)： | 8 |
| 采樣率（每秒）： | 7.5M |
| 數(shù)據(jù)接口： | 并聯(lián) |
| 轉(zhuǎn)換器數(shù)目： | 2 |
| 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： | 28-WFQFN 裸露焊盤 |
| 供應(yīng)商設(shè)備封裝： | 28-TQFN-EP（5x5） |
| 包裝： | 帶卷 (TR) |
| 輸入數(shù)目和類型： | 4 個單端，雙極；2 個差分，雙極 |
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MAX1191
Ultra-Low-Power, 7.5Msps, Dual 8-Bit ADC
14
______________________________________________________________________________________
Detailed Description
The MAX1191 uses a seven-stage, fully differential,
pipelined architecture (Figure 1) that allows for high-
speed conversion while minimizing power consump-
tion. Samples taken at the inputs move progressively
through the pipeline stages every half-clock cycle.
Including the delay through the output latch, the total
clock-cycle latency is 5 clock cycles for channel A and
5.5 clock cycles for channel B.
At each stage, flash ADCs convert the held input volt-
ages into a digital code. The following digital-to-analog
converter (DAC) converts the digitized result back into
an analog voltage, which is then subtracted from the
original held input signal. The resulting error signal is
then multiplied by two, and the product is passed along
to the next pipeline stage where the process is repeated
until the signal has been processed by all stages. Digital
error correction compensates for ADC comparator off-
sets in each pipeline stage and ensures no missing
codes. Figure 2 shows the MAX1191 functional diagram.
Pin Description (continued)
PIN
NAME
FUNCTION
23
PD0
Power-Down Digital Input 0. See Table 3.
24
REFIN
Reference Input. Internally pulled up to VDD.
25
COM
Common-Mode Voltage I/O. Bypass COM to GND with a 0.33F capacitor.
26
REFN
Negative Reference I/O. Conversion range is ±(VREFP - VREFN). Bypass REFN to GND with a 0.33F
capacitor.
27
REFP
Positive Reference I/O. Conversion range is ±(VREFP - VREFN). Bypass REFP to GND with a 0.33F
capacitor.
—
EP
Exposed Paddle. Internally connected to pin 3. Externally connect EP to GND.
INA+
INA-
T/H
DIGITAL ERROR CORRECTION
D0–D7
FLASH
ADC
T/H
DAC
∑
-
+
x2
1.5 BITS
STAGE 1
STAGE 2
STAGE 7
Figure 1. Pipeline Architecture—Stage Blocks
INA+
INA-
DEC
/
T/H
INB+
INB-
DEC
/
T/H
/
REFERENCE
SYSTEM AND
BIAS
CIRCUITS
PIPELINE
ADC
A
COM
REFIN
REFN
REFP
CLK
TIMING
OVDD
OGND
MULTIPLEXER
OUTPUT
DRIVERS
POWER
CONTROL
D0–D7
/
VDD
GND
A/B
PD0
PD1
PIPELINE
ADC
B
MAX1191
Figure 2. MAX1191 Functional Diagram
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX1192ETI | 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 |
| MAX1192ETI+ | 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 8-Bit 2Ch 22Msps 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 |
| MAX1192ETI+T | 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 8-Bit 2Ch 22Msps 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 |
| MAX1192ETI-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 |
| MAX1193ETI | 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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