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ACPL-796J-560E Просмотр технического описания (PDF) - Avago Technologies

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Компоненты Описание
производитель
ACPL-796J-560E
AVAGO
Avago Technologies AVAGO
ACPL-796J-560E Datasheet PDF : 16 Pages
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8
7
TA = +105°C
6
TA = +85°C
5
TA = +25°C
TA = –40°C
4
3
2
-320 -240 -160 -80 0 80
VIN+ (mV)
160 240 320
Figure 11. IDD2 vs. VIN DC input at various temperatures.
8
7
MCLKIN = 20 MHz
6
MCLKIN = 10 MHz
5
MCLKIN = 5 MHz
4
3
2
-320 -240 -160 -80 0 80
VIN+ (mV)
160 240 320
Figure 12. IDD2 vs. VIN DC input for various frequencies.
Definitions
Integral Nonlinearity (INL)
INL is the maximum deviation of a transfer curve from a
straight line passing through the endpoints of the ADC
transfer function, with offset and gain errors adjusted out.
Differential Nonlinearity (DNL)
DNL is the deviation of an actual code width from the
ideal value of 1 LSB between any two adjacent codes in
the ADC transfer curve. DNL is a critical specification in
closed-loop applications. A DNL error of less than ±1 LSB
guarantees no missing codes and a monotonic transfer
function.
Offset Error
Offset error is the deviation of the actual input voltage
corresponding to the mid-scale code (32,768 for a 16-bit
system with an unsigned decimation filter) from 0 V. Offset
error can be corrected by software or hardware.
Gain Error
Gain error is the the difference between the ideal gain
slope and the actual gain slope, with offset error adjusted
out. Gain error includes reference error. Gain error can be
corrected by software or hardware.
Signal-to-Noise Ratio (SNR)
The SNR is the measured ratio of AC signal power to noise
power below half of the sampling frequency. The noise
power excludes harmonic signals and DC.
Signal-to-(Noise + Distortion) Ratio (SNDR)
The SNDR is the measured ratio of AC signal power to
noise plus distortion power at the output of the ADC. The
signal power is the rms amplitude of the fundamental
input signal. Noise plus distortion power is the rms sum
of all non-fundamental signals up to half the sampling
frequency (excluding DC).
Effective Number of Bits (ENOB)
The ENOB determines the effective resolution of an ADC,
expressed in bits, defined by ENOB = (SNDR − 1.76)/6.02
Isolation Transient Immunity (CMR)
The isolation transient immunity (also known as Common-
Mode Rejection or CMR) specifies the minimum rate-of-
rise/fall of a common-mode signal applied across the
isolation boundary beyond which the modulator clock or
data is corrupted.
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