ACPL-796J-000E Avago Technologies US Inc., ACPL-796J-000E Datasheet - Page 9

• Manufacturer Part Number: ACPL-796J-000E
• Description: Isolated Sigma-Delta Modulator, LF
• Manufacturer: Avago Technologies US Inc.

Specifications of ACPL-796J-000E

• Amplifier Type: Isolation
• Number Of Circuits: 1
• Current - Input Bias: 500nA
• Voltage - Input Offset: 3000µV
• Current - Supply: 14mA
• Voltage - Supply, Single/dual (±): 4.5 V ~ 5.5 V
• Operating Temperature: -40°C ~ 105°C
• Mounting Type: Surface Mount
• Package / Case: 16-SOIC
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Output Type: -
• Current - Output / Channel: -
• -3db Bandwidth: -
• Slew Rate: -
• Gain Bandwidth Product: -
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Figure 11. I
Definitions
Integral onlinearity (I L)
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 onlinearity (D L)
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 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 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
9
ffset rror
ain rror
8
7
6
5
4
3
2
-320
DD
-240
vs.
I
-160
DC input at various temperatures.
-80
T
T
A
A
V
= +105°C
= +85°C
IN
T
T
A
A
+ (mV)
= +25°C
= –40°C
0
80
160
240
320
Figure 1 . I
corrected by software or hardware.
Signal-to- oise atio (S )
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-( oise + Distortion) atio (S D )
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).
The ENOB determines the effective resolution of an ADC,
expressed in bits, defined by ENOB = (SNDR − 1.76)/6.02
Isolation Transient Immunity (C
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.
ffective umber of Bits (
8
7
6
5
4
3
2
-320
DD
-240
vs.
I
-160
DC input for various frequencies.
-80
V
IN
B)
+ (mV)
MCLKIN = 20 MHz
MCLKIN = 10 MHz
MCLKIN = 5 MHz
0
)
80
160
240
320