参数资料
型号: AD7266BSUZ
厂商: Analog Devices Inc
文件页数: 24/29页
文件大小: 0K
描述: IC ADC 12BIT 3CH 2MSPS 32-TQFP
设计资源: AD7266 SAR ADC in DC-Coupled Differential and Single-Ended Appls (CN0039)
标准包装: 1
位数: 12
采样率(每秒): 2M
数据接口: DSP,MICROWIRE?,QSPI?,串行,SPI?
转换器数目: 2
功率耗散(最大): 33.6mW
电压电源: 模拟和数字
工作温度: -40°C ~ 125°C
安装类型: 表面贴装
封装/外壳: 32-TQFP
供应商设备封装: 32-TQFP(7x7)
包装: 托盘
输入数目和类型: 12 个单端,单极;6 个差分,单极;6 个伪差分,单极
产品目录页面: 777 (CN2011-ZH PDF)
AD7266
Rev. B | Page 3 of 28
SPECIFICATIONS
TA = TMIN to TMAX, VDD = 2.7 V to 3.6 V, fSCLK = 24 MHz, fS = 1.5 MSPS, VDRIVE = 2.7 V to 3.6 V; VDD = 4.75 V to 5.25 V,
fSCLK = 32 MHz, fS = 2 MSPS, VDRIVE = 2.7 V to 5.25 V; specifications apply using internal reference or external reference = 2.5 V ± 1%,
unless otherwise noted1.
Table 1.
Parameter
Specification
Unit
Test Conditions/Comments
DYNAMIC PERFORMANCE
Signal-to-Noise Ratio (SNR)2
71
dB min
fIN = 50 kHz sine wave; differential mode
69
dB min
fIN = 50 kHz sine wave; single-ended and
pseudo differential modes
Signal-to-Noise + Distortion Ratio (SINAD)2
70
dB min
fIN = 50 kHz sine wave; differential mode
68
dB min
fIN = 50 kHz sine wave; single-ended and
pseudo differential modes
Total Harmonic Distortion (THD)2
–77
dB max
fIN = 50 kHz sine wave; differential mode
–73
dB max
fIN = 50 kHz sine wave; single-ended and
pseudo differential modes
Spurious-Free Dynamic Range (SFDR)2
–75
dB max
fIN = 50 kHz sine wave
Intermodulation Distortion (IMD)2
fa = 30 kHz, fb = 50 kHz
Second-Order Terms
–88
dB typ
Third-Order Terms
–88
dB typ
Channel-to-Channel Isolation
–88
dB typ
SAMPLE AND HOLD
Aperture Delay3
11
ns max
Aperture Jitter3
50
ps typ
Aperture Delay Matching3
200
ps max
Full Power Bandwidth
33/26
MHz typ
@ 3 dB, VDD = 5 V/VDD = 3 V
3.5/3
MHz typ
@ 0.1 dB, VDD = 5 V/VDD = 3 V
DC ACCURACY
Resolution
12
Bits
Integral Nonlinearity2
±1
LSB max
±0.5 LSB typ; differential mode
±1.5
LSB max
±0.5 LSB typ; single-ended and pseudo
differential modes
Differential Nonlinearity2, 4
±0.99
LSB max
Differential mode
0.99/+1.5
LSB max
Single-ended and pseudo differential modes
Straight Binary Output Coding
Offset Error
±7
LSB max
±2 LSB typ
Offset Error Match
±2
LSB typ
Gain Error
±2.5
LSB max
Gain Error Match
±0.5
LSB typ
Twos Complement Output Coding
Positive Gain Error
±2
LSB max
Positive Gain Error Match
±0.5
LSB typ
Zero Code Error
±5
LSB max
Zero Code Error Match
±1
LSB typ
Negative Gain Error
±2
LSB max
Negative Gain Error Match
±0.5
LSB typ
ANALOG INPUT5
Single-Ended Input Range
0 V to VREF
V
RANGE pin low
0 V to 2 × VREF
RANGE pin high
Pseudo Differential Input Range: VIN+ VIN6
0 to VREF
V
RANGE pin low
2 × VREF
V
RANGE pin high
Fully Differential Input Range: VIN+ and VIN
VCM ± VREF/2
V
VCM = common-mode voltage7 = VREF/2
VIN+ and VIN
VCM ± VREF
V
VCM = VREF
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