参数资料
| 型号： | AD7451BRMZ |
| 厂商： | Analog Devices Inc |
| 文件页数： | 20/25页 |
| 文件大小： | 0K |
| 描述： | IC ADC 12BIT DIFF 1MSPS 8MSOP |
| 标准包装： | 50 |
| 位数： | 12 |
| 采样率（每秒）： | 1M |
| 数据接口： | DSP，MICROWIRE?，QSPI?，串行，SPI? |
| 转换器数目： | 1 |
| 功率耗散（最大）： | 9.25mW |
| 电压电源： | 单电源 |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 8-TSSOP，8-MSOP（0.118"，3.00mm 宽） |
| 供应商设备封装： | 8-MSOP |
| 包装： | 管件 |
| 输入数目和类型： | 1 个伪差分，单极 |
AD7441/AD7451
Rev. D | Page 3 of 24
SPECIFICATIONS
VDD = 2.7 V to 5.25 V; fSCLK = 18 MHz; fS = 1 MSPS; VREF = 2.5 V; TA = TMIN to TMAX, unless otherwise noted. Temperature ranges for A, B
versions: 40°C to +85°C.
Table 1. AD7451
Parameter
Test Conditions/Comments
A Version
B Version
Unit
DYNAMIC PERFORMANCE
fIN = 100 kHz
Signal-to-Noise Ratio (SNR)1
VDD = 2.7 V to 5.25 V
70
dB min
Signal-to-(Noise + Distortion) (SINAD)1
VDD = 2.7 V to 3.6 V
69
dB min
VDD = 4.75 V to 5.25 V
70
dB min
Total Harmonic Distortion (THD)1
VDD = 2.7 V to 3.6 V; 78 dB typ
73
dB max
VDD = 4.75 V to 5.25 V; 80 dB typ
75
dB max
Peak Harmonic or Spurious Noise1
VDD = 2.7 V to 3.6 V; 80 dB typ
73
dB max
VDD = 4.75 V to 5.25 V; 82 dB typ
75
dB max
Intermodulation Distortion (IMD)1
fa = 90 kHz; fb = 110 kHz
Second-Order Terms
80
dB typ
Third-Order Terms
80
dB typ
Aperture Delay1
5
ns typ
Aperture Jitter1
50
ps typ
Full-Power Bandwidth1, 2
@ 3 dB
20
MHz typ
@ 0.1 dB
2.5
MHz typ
DC ACCURACY
Resolution
12
Bits
Integral Nonlinearity (INL)1
±1.5
±1
LSB max
Differential Nonlinearity (DNL)1
Guaranteed no missed codes to 12 bits
±0.95
LSB max
Offset Error1
±3.5
LSB max
Gain Error1
±3
LSB max
ANALOG INPUT
Full-Scale Input Span
VIN+ VIN–
VREF
V
Absolute Input Voltage
VIN+
VREF
V
VIN–3
VDD = 2.7 V to 3.6 V
0.1 to +0.4
V
VDD = 4.75 V to 5.25 V
0.1 to +1.5
V
DC Leakage Current
±1
μA max
Input Capacitance
When in track-and-hold
30/10
pF typ
REFERENCE INPUT
±1% tolerance for specified performance
2.5
V
DC Leakage Current
±1
μA max
VREF Input Capacitance
When in track-and-hold
10/30
pF typ
LOGIC INPUTS
Input High Voltage, VINH
2.4
V min
Input Low Voltage, VINL
0.8
V max
Input Current, IIN
Typically 10 nA, VIN = 0 V or VDD
±1
μA max
Input Capacitance, CIN5
10
pF max
LOGIC OUTPUTS
Output High Voltage, VOH
VDD = 4.75 V to 5.25 V; ISOURCE = 200 μA
2.8
V min
VDD = 2.7 V to 3.6 V; ISOURCE = 200 μA
2.4
V min
Output Low Voltage, VOL
ISINK = 200 μA
0.4
V max
Floating-State Leakage Current
±1
μA max
Floating-State Output Capacitance5
10
pF max
Output Coding
Straight
(natural) binary
Straight
(natural) binary
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