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參數(shù)資料
| 型號： | AD7876CRZ |
| 廠商： | Analog Devices Inc |
| 文件頁數(shù)： | 23/28頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC ADC 12BIT SAMPLING 10V 24SOIC |
| 產(chǎn)品變化通告： | Conversion Time Change |
| 標準包裝： | 1 |
| 位數(shù)： | 12 |
| 采樣率（每秒）： | 100k |
| 數(shù)據(jù)接口： | 串行，并聯(lián) |
| 轉換器數(shù)目： | 1 |
| 功率耗散（最大）： | 95mW |
| 電壓電源： | 雙 ± |
| 工作溫度： | -40°C ~ 85°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 24-SOIC（0.295"，7.50mm 寬） |
| 供應商設備封裝： | 24-SOIC W |
| 包裝： | 管件 |
| 輸入數(shù)目和類型： | 1 個單端，雙極 |
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AD7870/AD7875/AD7876
Rev. C | Page 4 of
28
Parameter
J, A
K, B
L, C
T
Units
Test Conditions/Comments
CONVERSION TIME
External Clock (fCLK = 2.5 MHz)
8
μs max
Internal Clock6
6.5/9
μs min/
μs max
POWER REQUIREMENTS
VDD
+5
V nom
±5% for specified performance
VSS
5
V nom
±5% for specified performance
IDD
13
mA max
Typically 8 mA
ISS
6
mA max
Typically 4 mA
Power Dissipation
95
mW max
Typically 60 mW
1 The temperature range for the J, K, and L versions is from 0°C to +70°C; for the A, B, and C versions is40°C to +85°C; and for the T version is 55°C to +125°C.
2 VIN (p-p) = ±3 V.
3 SNR calculation includes distortion and noise components.
4 Measured with respect to internal reference and includes bipolar offset error.
5 Sample tested @ +25°C to ensure compliance.
6 Conversion time specification for the AD7870A device with internal clock used is 8 μs/10 μs minimum/maximum.
AD7875/AD7876 SPECIFICATIONS
Table 2.
Parameter
AD7875/AD78761
Units
Test Conditions/Comments
K, B
L, C
T
DC ACCURACY
Resolution
12
Bits
Min Resolution for which No Missing
Codes Are Guaranteed
12
Bits
Integral Nonlinearity @ +25°C
±1
±1/2
±1
LSB max
TMIN to TMAX (AD7875 Only)
±1
LSB max
TMIN to TMAX (AD7876 Only)
±1
±1/2
±1
LSB max
Differential Nonlinearity
±1
±1.5/1.0
LSB max
Unipolar Offset Error (AD7875 Only)
±5
LSB max
Bipolar Zero Error (AD7876 Only)
±6
±2
±6
LSB max
Full-Scale Error at +25°C2
±8
LSB max
Typical full-scale error is ±1 LSB
Full-Scale TC2
±60
±35
±60
ppm/°C max
Typical TC is ±20 ppm/°C
Track-and-Hold Acquisition Time
2
μs max
DYNAMIC PERFORMANCE3 (AD7875
ONLY)
Signal-to-Noise Ratio4 (SNR)
@ +25°C
70
72
69
dB min
VIN = 10 kHz sine wave, fSAMPLE = 100 kHz
TMIN to TMAX
70
71
69
dB min
Typically 71.5 dB for 0 < VIN < 50 kHz
Total Harmonic Distortion (THD)
80
78
dB max
VIN = 10 kHz sine wave, fSAMPLE = 100 kHz
Typically 86 dB for 0 < VIN < 50 kHz
Peak Harmonic or Spurious Noise
80
78
dB max
VIN = 10 kHz, fSAMPLE = 100 kHz
Typically 86 dB for 0 < VIN < 50 kHz
Intermodulation Distortion (IMD)
Second Order Terms
80
78
dB max
fa = 9 kHz, fb = 9.5 kHz, fSAMPLE = 50 kHz
Third Order Terms
80
78
dB max
fa = 9 kHz, fb = 9.5 kHz, fSAMPLE = 50 kHz
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