ACPL-796J-000E Avago Technologies US Inc., ACPL-796J-000E Datasheet - Page 12

• 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

CURRENT
CURRENT
Digital Filter
A digital filter converts the single-bit data stream from
the modulator into a multi-bit output word similar to
the digital output of a conventional A/D converter. With
this conversion, the data rate of the word output is also
reduced (decimation). A Sinc
work together with the ACPL-796J. With a 10 MHz external
Note: In applications, a 0.1 PF bypass capacitor must be connected between pins V
GND1, and between pins V
Figure 16. Typical application circuit with a Sinc
Digital Interface IC
The HCPL-0872 Digital Interface IC (SO-16 package) is a
digital filter that converts the single-bit data stream from
the modulator into 15-bit output words and provides a
serial output interface that is compatible with SPI®, QSPI®,
and Microwire® protocols, allowing direct connection to a
Figure 17. Typical application circuit with the HCPL-087 .
Available in an SO-16 surface-mount package, the Digital
Interface IC has features include five different conver-
sion modes (combinations of speed and resolution),
three different pre-trigger modes (allows conversion time
<1 Ps), offset calibration, fast over-range (over-current,
or short circuits) detection, and adjustable threshold
detection. Programmable features are configured via the
12
INPUT
INPUT
R
R
SHUNT
SHUNT
ISOLATED
ISOLATED
5 V
5 V
0.1
PF
0.1
PF
V
V
V
GND1
V
V
V
GND1
DD1
IN
IN
DD1
IN
IN
DD2
+
–
+
–
ISOLATION
ISOLATION
ACPL-796J
ACPL-796J
BARRIER
BARRIER
and GND2 of the ACPL-796J.
MCLKIN
MCLKIN
MDAT
MDAT
GND2
GND2
3
V
V
DD2
DD2
filter is recommended to
ISOLATED
5 V/3.3 V
ISOLATED
3
NON-
NON-
filter.
5 V
0.1
PF
0.1
PF
V
MCLK1
MDAT1
GND
V
CLOCK
DATA
GND
DD
DD
SINC
HCPL-0872
3
FILTER
SDAT
SDAT
SCLK
SCLK
CS
CS
clock frequency, 256 decimation ratio and 16-bit word
settings, the output data rate is 39 kHz (= 10 MHz/256).
This filter can be implemented in an ASIC, an FPGA or a
DSP. Some of the ADC codes with corresponding input
voltages are shown in Table 10.
microcontroller. Instead of a digital filter implemented in
software, the HCPL-0872 can be used together with the
ACPL-796J to form an isolated programmable two-chip
A/D converter (see Figure 17).
Serial Configuration port. A second multiplexed input is
available to allow measurements with a second isolated
modulator without additional hardware. Refer to the
HCPL-0872 data sheet for details.
Notes:
SPI and QSPI are trademarks of Motorola Corp.
Microwire is a trademark of National Semiconductor Inc.
3-WIRE
SERIAL
INTERFACE
CLOCK
3-WIRE
SERIAL
INTERFACE
DD1
and