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參數(shù)資料
| 型號： | AD7895ARZ-3 |
| 廠商： | Analog Devices Inc |
| 文件頁數(shù)： | 5/12頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC ADC 12BIT SRL 5V 8-SOIC |
| 標準包裝： | 1 |
| 位數(shù)： | 12 |
| 采樣率（每秒）： | 192k |
| 數(shù)據(jù)接口： | 串行 |
| 轉(zhuǎn)換器數(shù)目： | 1 |
| 功率耗散（最大）： | 20mW |
| 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： | 8-SOIC（0.154"，3.90mm 寬） |
| 供應商設備封裝： | 8-SOIC |
| 包裝： | 管件 |
| 輸入數(shù)目和類型： | 1 個單端，雙極 |
–2–
REV. 0
AD7895–SPECIFICATIONS
Parameter
A Versionsl
B Versions
Units
Test Conditions/Comments
DYNAMIC PERFORMANCE
2
Signal to (Noise + Distortion) Ratio
3
@ +25
°C
70
dB min
fIN = 50 kHz Sine Wave, fSAMPLE = 200 kHz
TMIN to TMAX
70
dB min
Total Harmonic Distortion (THD)
3
–78
dB max
fIN = 50 kHz Sine Wave, fSAMPLE = 200 kHz,
Typically –87 dB
Peak Harmonic or Spurious Noise
3
–89
dB typ
fIN = 50 kHz Sine Wave, fSAMPLE = 200 kHz
Intermodulation Distortion (IMD)
3
fa = 9 kHz, fb = 9.5 kHz, fSAMPLE = 200 kHz
2nd Order Terms
–87
dB typ
3rd Order Terms
–87
dB typ
DC ACCURACY
Resolution
12
Bits
Minimum Resolution for which
No Missing Codes are Guaranteed
12
Bits
Relative Accuracy
3
±1
LSB max
Typically 0.4 LSB
Differential Nonlinearity
3
±1
LSB max
Positive Full-Scale Error
3
±3
±2
LSB max
AD7895-2
Unipolar Offset Error
±3
±2
LSB max
AD7895-10, AD7895-3 Only
Negative Full-Scale Error
3
±3
±2
LSB max
Bipolar Zero Error
±4
±3
LSB max
ANALOG INPUT
AD7895-10
Input Voltage Range
±10
Volts
Input Resistance
24
k
min
AD7895-3
Input Voltage Range
±2.5
Volts
Input Resistance
9
k
min
AD7895-2
Input Voltage Range
0 to +2.5
Volts
Input Current
500
nA max
REFERENCE INPUT
REF IN Input Voltage Range
2.375/2.625
V min/V max
2.5 V
± 5%
Input Current
1
A max
Input Capacitance
3
10
pF max
LOGIC INPUTS
Input High Voltage, VINH
2.4
V min
VDD = 5 V ± 5%
Input Low Voltage, VINL
0.8
V max
VDD = 5 V ± 5%
Input Current, IIN
±10
A max
VIN = 0 V to VDD
Input Capacitance, CIN
4
10
pF ax
LOGIC OUTPUTS
Output High Voltage, VOH
4.0
V min
ISOURCE = 200 A
Output Low Voltage, VOL
0.4
V max
ISINK = 1.6 mA
Output Coding
AD7895-10, AD7895-3
2s Complement
AD7895-2
Straight (Natural) Binary
CONVERSION RATE
Conversion Time
Mode 1 Operation
3.8
s max
Mode 2 Operation
5
9.8
s max
Track/Hold Acquisition Time3
0.5
s max
POWER REQUIREMENTS
VDD
+5
V nom
±5% for Specified Performance
IDD
4
mA max
Digital Inputs @ VDD, VDD = 5 V ± 5%
Power Dissipation
20
mW max
Typically 16 mW
Power-Down Mode
IDD @ +25°C5
5
A max
Digital Inputs @ GND, VDD = 5 V ± 5%
TMIN to TMAX
10
A max
Digital Inputs @ GND, VDD = 5 V ± 5%
Power Dissipation @ +25
°C25
25
W max
NOTES
1Temperature ranges are as follows: A, B Versions: –40
°C to +85°C.
2Applies to Mode 1 operation. See section on “Operating Modes.”
3See Terminology.
4Sample tested @ +25
°C to ensure compliance.
5This 9.8
s includes the “wake-up” time from standby. This “wake-up” time is timed from the rising edge of CONVST, whereas conversion is timed from the falling edge of CONVST, for
narrow CONVST pulse width the conversion time is effectively the “wake-up” time plus conversion time hence 9.8
s. This can be seen from Figure 3. Note that if the CONVST pulse width
is greater than 6
s then the effective conversion time will increase beyond 9.8 s.
Specifications subject to change without notice.
(VDD = +5 V, GND = 0 V, REF IN = +2.5 V.
All specifications TMIN to TMAX unless otherwise noted)
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| AD7895ARZ-3REEL | 功能描述:IC ADC 12BIT SRL 5V 8SOIC RoHS:是 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 模數(shù)轉(zhuǎn)換器 系列:- 標準包裝:1,000 系列:- 位數(shù):16 采樣率（每秒）:45k 數(shù)據(jù)接口:串行 轉(zhuǎn)換器數(shù)目:2 功率耗散（最大）:315mW 電壓電源:模擬和數(shù)字 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:28-SOIC（0.295"，7.50mm 寬） 供應商設備封裝:28-SOIC W 包裝:帶卷 (TR) 輸入數(shù)目和類型:2 個單端，單極 |
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