Datasheet > ADUC7028

ADUC7028

更新时间： 2023-09-23 06:49:07

品牌	Logo	应用领域
亚德诺 - ADI		控制器微控制器
页数	文件大小	规格书
92页	978K
描述
精密模拟微控制器，12位模拟I/O，ARM7TDMI® MCU

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数据手册

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ADUC7028 数据手册

ADuC7019/20/21/22/24/25/26/27

SPECIFICATIONS

AVDD = IOV_DD= 2.7 V to 3.6 V, V_REF= 2.5 V internal reference, f_CORE= 41.78 MHz, T_A= 40°C to 125°C, unless otherwise noted.

Table 1.

Parameter

Min

Typ

Max

Unit

Test Conditions/Comments

ADC CHANNEL SPECIFICATIONS

ADC Power-Up Time

DC Accuracy^{1, 2}

Eight acquisition clocks and fADC/2

μs

Resolution

Integral Nonlinearity

Bits

LSB

0.6

1.0

0.5

+0.7/−0.6

1.5

2.5 V internal reference

1.0 V external reference

2.5 V internal reference

1.0 V external reference

ADC input is a dc voltage

Differential Nonlinearity^{3, 4}

+1/−0.9

DC Code Distribution

ENDPOINT ERRORS⁵

Offset Error

Offset Error Match

Gain Error

LSB

Gain Error Match

DYNAMIC PERFORMANCE

Signal-to-Noise Ratio (SNR)

Total Harmonic Distortion (THD)

Peak Harmonic or Spurious Noise

Channel-to-Channel Crosstalk

ANALOG INPUT

f_IN= 10 kHz sine wave, f_SAMPLE= 1 MSPS

Includes distortion and noise components

−78

−75

−80

Measured on adjacent channels

Input Voltage Ranges

Differential Mode

V_CM

V_REF/2

0 to V_REF

Single-Ended Mode

Leakage Current

Input Capacitance

ꢀA

During ADC acquisition

ON-CHIP VOLTAGE REFERENCE

Output Voltage

0.47 ꢀF from V_REFto AGND

2.5

Accuracy

ppm/°C

T_A= 25°C

Reference Temperature Coefficient

Power Supply Rejection Ratio

Output Impedance

Internal V_REFPower-On Time

EXTERNAL REFERENCE INPUT⁷

Input Voltage Range

Input Impedance

0.625

AV_DD

kΩ

DAC CHANNEL SPECIFICATIONS

DC ACCURACY⁸

R_L= 5 kΩ, C_L= 100 pF

Resolution

Relative Accuracy

Differential Nonlinearity

Offset Error

Gain Error⁹

Bits

LSB

Guaranteed monotonic

2.5 V internal reference

Gain Error Mismatch

0.1

% of full scale on DAC0

Rev. A | Page 6 of 92

1...3 4 567 8 9...92

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