参数资料
型号: AD7762BSVZ-REEL
厂商: Analog Devices Inc
文件页数: 24/29页
文件大小: 0K
描述: IC ADC 24BIT 625KSPS 64TQFP
标准包装: 1,500
位数: 24
采样率(每秒): 625k
数据接口: 并联
转换器数目: 1
功率耗散(最大): 958mW
电压电源: 模拟和数字
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 64-TQFP 裸露焊盘
供应商设备封装: 64-TQFP-EP(10x10)
包装: 带卷 (TR)
输入数目和类型: 1 个差分,单极;1 个差分,双极
Data Sheet
AD7762
Rev. A | Page 3 of 28
SPECIFICATIONS
AVDD1 = DVDD = VDRIVE = 2.5 V, AVDD2 = AVDD3 = AVDD4 = 5 V, VREF = 4.096 V, MCLK amplitude = 5 V, TA = 25°C, normal mode,
using on-chip amplifier with components as shown in Table 8, unless otherwise noted.1
Table 2.
Parameter
Test Conditions/Comments
Specification
Unit
DYNAMIC PERFORMANCE
Decimate by 256
MCLK = 40 MHz, ODR = 78 kHz, FIN = 1 kHz
Dynamic Range
Modulator inputs shorted
119
120.5
dB min
dB typ
Signal-to-Noise Ratio (SNR)2
Input amplitude = 0.5 dBFS
112
dB typ
Input amplitude = 60 dBFS
59
dB typ
Spurious-Free Dynamic Range (SFDR)
Nonharmonic, input amplitude = 6 dBFS
126
dBc typ
Input amplitude = 60 dBFS
77
dBc typ
Total Harmonic Distortion (THD)
Input amplitude = 0.5 dBFS
105
dB typ
Input amplitude = 6 dBFS
106
dB typ
Input amplitude = 60 dBFS
75
dB typ
Decimate by 64
MCLK = 40 MHz, ODR = 312.5 kHz, FIN = 1 kHz
Dynamic Range
Modulator inputs shorted
112
114
dB min
dB typ
Signal-to-Noise Ratio (SNR)2
Input amplitude = 0.5 dBFS
109.5
dB typ
Spurious-Free Dynamic Range (SFDR)
Nonharmonic, input amplitude = 6 dBFS
126
dBc typ
Decimate by 32
MCLK = 40 MHz, ODR = 625 kHz, FIN =100 kHz
Dynamic Range
Modulator inputs shorted
108
109.5
dB min
dB typ
Signal-to-Noise Ratio (SNR)2
Input amplitude = 0.5 dBFS
107
dB typ
Spurious-Free Dynamic Range (SFDR)
Nonharmonic, input amplitude = 6 dBFS
120
dBc typ
Total Harmonic Distortion (THD)
Input amplitude = 0.5 dBFS
108
dB typ
Input amplitude = 6 dBFS
106
dB typ
DC ACCURACY
Resolution
24
Bits
Differential Nonlinearity
Guaranteed monotonic to 24 bits
Integral Nonlinearity
0.00076
% typ
Zero Error
0.014
% typ
0.02
% max
Gain Error
0.015
% typ
Zero Error Drift
0.019
%/°C typ
Gain Error Drift
0.0002
%/°C typ
DIGITAL FILTER RESPONSE
Decimate by 32
Group Delay
MCLK = 40 MHz
47
s typ
Decimate by 64
Group Delay
MCLK = 40 MHz
91.5
s typ
Decimate by 256
Group Delay
MCLK = 40 MHz
358
s typ
ANALOG INPUT
Differential Input Voltage
VIN(+) – VIN(), VREF = 2.5 V
±2
V p-p
VIN(+) – VIN(), VREF = 4.096 V
±3.25
V p-p
Input Capacitance
At internal buffer inputs
5
pF typ
At modulator inputs
55
pF typ
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