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參數(shù)資料
| 型號： | MAX1161 |
| 廠商： | Maxim Integrated Products, Inc. |
| 英文描述： | Low-Voltage Adjustable Precision Shunt Regulator 3-SOT-23 -40 to 85 |
| 中文描述： | 10位，40Msps，TTL電輸出ADC |
| 文件頁數(shù)： | 6/8頁 |
| 文件大?。?/td> | 78K |
| 代理商： | MAX1161 |
Connect a Schottky or hot carrier diode between AGND
and V
EE
. The use of separate power supplies between
V
CC
and DV
CC
is not recommended due to potential
power-supply-sequencing latchup conditions. For opti-
mum performance, use the recommended circuit
shown in Figure 2.
V oltage Referenc e
The MAX1161 requires the use of two voltage refer-
ences: VFT and VFB. VFT is the force for the top of the
voltage-reference ladder (typically +2.5V); VFB (typical-
ly -2.5V) is the force for the bottom of the voltage-
reference ladder. Both voltages are applied across an
800
internal reference-ladder resistance. The +2.5V
voltage source for reference VFT must be current limited
to 20mA (max) if a different driving circuit is used in
place of the recommended reference circuit shown in
Figures 2 and 3. In addition, there are three reference-
ladder taps (VST, VRM, and VSB). VST is the sense for
the top of the reference ladder (+2V), VRM is the mid-
point of the ladder (typically 0V), and VSB is the sense
for the bottom of the reference ladder (-2V). The volt-
ages at VST and VSB are the device’s true full-scale
input voltages when VFT and VFB are driven to the rec-
ommended voltages (+2.5V and -2.5V, respectively).
These points should be used to monitor the device’s
actual full-scale input range. When not being used, a
decoupling capacitor of 0.01μF (chip carrier preferred)
connected to AGND from each tap is recommended to
minimize high-frequency noise injection.
Figure 2 shows an example of a recommended refer-
ence-driver circuit. IC1 (MAX6225) is a +2.5V reference
with 0.2% accuracy. Potentiometer R1 is 10k
and sup-
ports a minimum adjustable range of 0.6%. Use an
OP07 or equivalent device for IC2. R2 and R3 must be
matched to within 0.1% with good TC tracking to main-
tain 0.3LSB matching between VFT and VFB. If 0.1%
matching is not met, then R4 can be used to adjust the
VFB voltage to the desired level. Adjust VFT and VFB
such that VST and VSB are exactly +2V and -2V,
respectively.
The analog input range scales proportionally with respect
to the reference voltage if a different input range is
required. The maximum scaling factor for device opera-
tion is ±20% of the recommended reference voltages of
VFT and VFB. However, because the device is laser
trimmed to optimize performance with ±2.5V references,
its accuracy degrades if operated beyond a ±2% range.
The following errors are defined:
+FS error = top of ladder offset voltage
=
(+FS - VST + 1LSB)
-FS error = bottom of ladder offset voltage
=
(-FS - VSB - 1LSB)
where the +FS (full-scale) input voltage is defined as the
output transition between 11 1111 1110 and 11 1111 1111,
and the -FS input voltage is defined as the output transi-
tion between 00 0000 0000 and 00 0000 0001 (Table 2).
M
10-Bit, 40Msps, T T L-Output ADC
6
_______________________________________________________________________________________
CLK
DATA VALID
t
d
OUTPUT
DATA
Figure 1b. Single-Event Clock
CLK
t
pwH
N - 2
N - 1
N
DATA VALID
N
DATA VALID
N + 1
t
pwL
t
d
N + 1
N + 2
OUTPUT
DATA
Figure 1a. Timing Diagram
DESCRIPTION
UNITS
t
d
CLK to Data Valid Propagation Delay
ns
t
pwH
CLK High Pulse Width
ns
PARAMETER
10
300
t
pwL
CLK Low Pulse Width
ns
10
MIN
TYP
MAX
14
18
Table 1. Timing Parameters
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| MAX11610 | 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:2.7V to 3.6V and 4.5V to 5.5V, Low-Power, 4-/8-/12-Channel, 2-Wire Serial 10-Bit ADCs |
| MAX11610EEE+ | 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 10-Bit 12Ch 94.4sps 5.5V Precision ADC RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結構: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 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-32 |
| MAX11610EEE+T | 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 10-Bit 12Ch 94.4sps 5.5V Precision ADC RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結構: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 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-32 |
| MAX11611 | 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:2.7V to 3.6V and 4.5V to 5.5V, Low-Power, 4-/8-/12-Channel, 2-Wire Serial 10-Bit ADCs |
| MAX11611EEE+ | 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 10-Bit 12Ch 94.4sps 3.6V Precision ADC RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結構: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 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-32 |
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