參數(shù)資料
型號： ADC12030
廠商： National Semiconductor Corporation
元件分類： 串行ADC
英文描述： Self-Calibrating 12-Bit Plus Sign Serial I/O A/D Converters with MUX and Sample/Hold
中文描述： 自校準(zhǔn)12位帶符號串行I /辦公自動化/ D轉(zhuǎn)換器MUX和采樣/保持
文件頁數(shù)： 10/41頁
文件大小： 1036K
代理商： ADC12030
AC Electrical Characteristics
(Continued)
The following specifications apply for V
+
= V
+ = V
+ = +5.0 V
, V
+ = +4.096 V
, V
= 0 V
, 12-bit + sign conver-
sion mode, t
= t
= 3 ns, f
= f
= 8 MHz for the ADC12H030, ADC12H032, ADC12H034 and ADC12H038, f
CK
= f
SK
= 5
MHz for the ADC12030, ADC12032, ADC12034 and ADC12038, R
= 25
, source impedance for V
+ and V
≤
25
,
fully-differential input with fixed 2.048V common-mode voltage, and 10(t
) acquisition time unless otherwise specified.
Bold-
face limits apply for T
A
= T
J
= T
MIN
to T
MAX
;
all other limits T
A
= T
J
= 25C. (Note 17)
Symbol
Parameter
Conditions
Typical
(Note 10)
10
10
12
12
25
Limits
(Note 11)
30
30
30
30
45
Units
(Limits)
ns (max)
ns (max)
ns (max)
ns (max)
ns (max)
t
RDO
DO Rise Time, TRI-STATE to High
DO Rise Time, Low to High
DO Fall Time, TRI-STATE to Low
DO Fall Time, High to Low
Delay from CS Falling Edge
to DOR Falling Edge
Delay from Serial Data Clock Falling
Edge to DOR Rising Edge
Capacitance of Logic Inputs
Capacitance of Logic Outputs
R
L
= 3k, C
L
= 100 pF
t
FDO
R
L
= 3k, C
L
= 100 pF
t
CD
t
SD
25
45
ns (max)
C
IN
C
OUT
10
20
pF
pF
Note 1:
Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for which the device is func-
tional, but do not guarantee specific performance limits. For guaranteed specifications and test conditions, see the Electrical Characteristics. The guaranteed speci-
fications apply only for the test conditions listed. Some performance characteristics may degrade when the device is not operated under the listed test conditions.
Note 2:
All voltages are measured with respect to GND, unless otherwise specified.
Note 3:
When the input voltage (V
) at any pin exceeds the power supplies (V
<
GND or V
>
V
+ or V
+), the current at that pin should be limited to 30 mA.
The 120 mA maximum package input current rating limits the number of pins that can safely exceed the power supplies with an input current of 30 mA to four.
Note 4:
The maximum power dissipation must be derated at elevated temperatures and is dictated by T
max,
θ
and the ambient temperature, T
. The maximum
allowable power dissipation at any temperature is P
D
= (T
max T
)/
θ
or the number given in the Absolute Maximum Ratings, whichever is lower. For this device,
T
J
max = 150C. The typical thermal resistance (
θ
JA
) of these parts when board mounted follow:
Thermal
Resistance
θ
JA
70C/W
64C/W
42C/W
57C/W
50C/W
Part Number
ADC12H030CIWM, ADC12030CIWM
ADC12H032CIWM, ADC12032CIWM
ADC12H034CIN, ADC12034CIN
ADC12H034CIWM, ADC12034CIWM
ADC12H038CIWM, ADC12038CIWM
Note 5:
The human body model is a 100 pF capacitor discharged through a 1.5 k
resistor into each pin.
Note 6:
See AN450 “Surface Mounting Methods and Their Effect on Product Reliability” or the section titled “Surface Mount” found in any post 1986 National Semi-
conductor Linear Data Book for other methods of soldering surface mount devices.
Note 7:
Two on-chip diodes are tied to each analog input through a series resistor as shown below. Input voltage magnitude up to 5V above V
+ or 5V below GND
will not damage this device. However, errors in the A/D conversion can occur (if these diodes are forward biased by more than 50 mV) if the input voltage magnitude
of selected or unselected analog input go above V
A
+ or below GND by more than 50 mV. As an example, if V
A
+ is 4.5 V
DC
, full-scale input voltage must be
≤
4.55
V
DC
to ensure accurate conversions.
Note 8:
To guarantee accuracy, it is required that the V
A
+ and V
D
+ be connected together to the same power supply with separate bypass capacitors at each V
+
pin.
DS011354-2
www.national.com
10
相關(guān)PDF資料
PDF描述
ADC12032 Self-Calibrating 12-Bit Plus Sign Serial I/O A/D Converters with MUX and Sample/Hold
ADC12034 Self-Calibrating 12-Bit Plus Sign Serial I/O A/D Converters with MUX and Sample/Hold
ADC12038 Self-Calibrating 12-Bit Plus Sign Serial I/O A/D Converters with MUX and Sample/Hold
ADC1230 Self-Calibrating 12-Bit Plus Sign Serial I/O A/D Converters with MUX and Sample/Hold
ADC12034CIN RES 536K OHM 1/16W 1% 0402 SMD
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
ADC12030_07 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Self-Calibrating 12-Bit Plus Sign Serial I/O A/D Converters with MUX and Sample/Hold
ADC12030CIWM 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
ADC12030CIWM/NOPB 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
ADC12030CIWMX 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
ADC12030CIWMX/NOPB 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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