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Converter Electrical Characteristics
(Continued)
The following specifications apply for AV
= DV
= +5.0V
, OE = 0V, V
RT
= +2.6V, V
= 0.6V, C
= 20 pF,
f
CLK
= 20MHz at 50% duty cycle.
Boldface limits apply for T
A
= T
MIN
to T
MAX
;
all other limits T
A
= 25C (Notes 7, 8)
Symbol
Parameter
Conditions
Typical
(Note 9)
Limits
(Note 9)
Units
AC Electrical Characteristics
SNR
Signal-to- Noise Ratio
f
IN
= 1.31 MHz, V
IN
= FS - 2 LSB
f
IN
= 4.43 MHz, V
IN
= FS - 2 LSB
f
IN
= 9.9 MHz, V
IN
= FS - 2 LSB
f
IN
= 4.43 MHz, f
CLK
= 30 MHz
f
IN
= 1.31 MHz, V
IN
= FS - 2 LSB
f
IN
= 4.43 MHz, V
IN
= FS - 2 LSB
f
= 9.9 MHz, V
IN
= FS - 2 LSB
f
IN
= 4.43 MHz,f
CLK
= 30 MHz
f
IN
= 1.31 MHz, V
IN
= FS - 2 LSB
f
IN
= 4.43 MHz, V
IN
= FS - 2 LSB
f
IN
= 9.9 MHz, V
IN
= FS - 2 LSB
f
IN
= 4.43 MHz, f
CLK
= 30 MHz
47
47
42
45
56
58
53
46
55
57
52
47
44
dB(min)
SFDR
Spurious Free Dynamic
Range
dB
THD
Total Harmonic Distortion
dB
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 = AV
SS
= DV
SS
= 0V, unless otherwise specified.
Note 3:
When the input voltage at any pin exceeds the power supplies (that is, less thanAV
SS
or DV
SS
, or greater thanAV
DD
or DV
DD
), the current at that pin should
be limited to 25 mA. The 50 mA maximum package input current rating limits the number of pins that can safely exceed the power supplies with an input current of
25 mA to two.
Note 4:
The absolute maximum junction temperatures (T
max) for this device is 150C. The maximum allowable power dissipation is dictated by T
max, the
junction-to-ambient thermal resistance
θ
, and the ambient temperature, T
, and can be calculated using the formula P
MAX = (T
max - T
)/
θ
. In the 24-pin
TSSOP,
θ
is 92C/W, so P
MAX = 1,358 mW at 25C and 815 mW at the maximum operating ambient temperature of 75C. (Typical thermal resistance,
θ
, of
this part is 98C/W for the EIAJ SOIC). Note that the power dissipation of this device under normal operation will typically be about 101 mW (60 mW quiescent power
+ 33 mW reference ladder power + 8 mW due to 1 TTL loan on each digital output. The values for maximum power dissipation listed above will be reached only when
the ADC1175 is operated in a severe fault condition (e.g. when input or output pins are driven beyond the power supply voltages, or the power supply polarity is re-
versed). Obviously, such conditions should always be avoided.
Note 5:
Human body model is 100 pF capacitor discharged through a 1.5k
resistor. Machine model is 220 pf discharged through ZERO
.
Note 6:
See AN450,
″
Surface Mounting Methods and Their Effect on Product Reliability
″
, or the section entitled
″
Surface Mount
″
found in any post 1986 National
Semiconductor Linear Data Book, for other methods of soldering surface mount devices.
Note 7:
The analog inputs are protected as shown below. Input voltage magnitudes up to 6.5V or to 500 mV below GND will not damage this device. However, errors
in the A/D conversion can occur if the input goes above V
DD
or below GND by more than 50 mV. As an example, if AV
DD
is 4.75V
DC
, the full-scale input voltage must
be
≤
4.80V
DC
to ensure accurate conversions.
Note 8:
To guarantee accuracy, it is required that AV
DD
and DV
DD
be well bypassed. Each supply pin must be decoupled with separate bypass capacitors.
Note 9:
Typical figures are at T
J
= 25C, and represent most likely parametric norms. Test limits are guaranteed to National’s AOQL (Average Outgoing Quality
Level).
Note 10:
At least two clock cycles must be presented to the ADC1175 after power up. See Section 4.0 for details.
DS100092-10
A
www.national.com
6
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|---|---|
| ADC1175CIMTCX/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 |
| ADC1175EVAL | 功能描述:BOARD EVALUATION FOR ADC1175 RoHS:是 類別:編程器，開(kāi)發(fā)系統(tǒng) >> 過(guò)時(shí)/停產(chǎn)零件編號(hào) 系列:- 標(biāo)準(zhǔn)包裝:1 系列:- 傳感器類型:CMOS 成像，彩色（RGB） 傳感范圍:WVGA 接口:I²C 靈敏度:60 fps 電源電壓:5.7 V ~ 6.3 V 嵌入式:否 已供物品:成像器板 已用 IC / 零件:KAC-00401 相關(guān)產(chǎn)品:4H2099-ND - SENSOR IMAGE WVGA COLOR 48-PQFP4H2094-ND - SENSOR IMAGE WVGA MONO 48-PQFP |
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| ADC119 | 制造商:MPSIND 制造商全稱:MPS Industries, Inc. 功能描述:1W, Miniature SIP, Single & Dual Output DC/DC Converters |
| ADC11C125 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:11-Bit, 125 MSPS, 1.1 GHz Bandwidth A/D Converter with CMOS Outputs |
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