AD73360LARZ Datasheet, PDF (1/35 Pages) Analog Devices – Six-Input Channel Analog Front End

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Six-Input Channel
Analog Front End
AD73360
FEATURES
Six 16-Bit A/D Converters
Programmable Input Sample Rate
Simultaneous Sampling
77 dB SNR
64 kS/s Maximum Sample Rate
–83 dB Crosstalk
Low Group Delay (25 ␮s Typ per ADC Channel)
Programmable Input Gain
Flexible Serial Port which Allows Multiple Devices to
Be Connected in Cascade
Single (+2.7 V to +5.5 V) Supply Operation
80 mW Max Power Consumption at +2.7 V
On-Chip Reference
28-Lead SOIC and 44-Lead TQFP Packages
APPLICATIONS
General Purpose Analog Input
Industrial Power Metering
Motor Control
Simultaneous Sampling Applications
GENERAL DESCRIPTION
The AD73360 is a six-input channel analog front-end processor
for general purpose applications including industrial power
metering or multichannel analog inputs. It features six 16-bit
A/D conversion channels each of which provide 77 dB signal-to-
noise ratio over a dc to 4 kHz signal bandwidth. Each channel
also features a programmable input gain amplifier (PGA) with
gain settings in eight stages from 0 dB to 38 dB.
The AD73360 is particularly suitable for industrial power me-
tering as each channel samples synchronously, ensuring that there
is no (phase) delay between the conversions. The AD73360 also
features low group delay conversions on all channels.
An on-chip reference voltage is included and is programmable
to accommodate either 3 V or 5 V operation.
The sampling rate of the device is programmable with four
separate settings offering 64 kHz, 32 kHz, 16 kHz and 8 kHz
sampling rates (from a master clock of 16.384 MHz).
A serial port (SPORT) allows easy interfacing of single or cas-
caded devices to industry standard DSP engines. The SPORT
transfer rate is programmable to allow interfacing to both fast
and slow DSP engines.
The AD73360 is available in 28-lead SOIC and 44-lead TQFP
packages.
FUNCTIONAL BLOCK DIAGRAM
VINP1
VINN1
VINP2
VINN2
SIGNAL
CONDITIONING
0/38dB
PGA
SIGNAL
CONDITIONING
0/38dB
PGA
ANALOG
⌺-⌬
MODULATOR
ANALOG
⌺-⌬
MODULATOR
DECIMATOR
DECIMATOR
SDI
SDIFS
SCLK
VINP3
VINN3
REFCAP
REFOUT
VINP4
VINN4
SIGNAL
CONDITIONING
0/38dB
PGA
ANALOG
⌺-⌬
MODULATOR
DECIMATOR
REFERENCE
AD73360
SIGNAL
CONDITIONING
0/38dB
PGA
ANALOG
⌺-⌬
MODULATOR
DECIMATOR
SERIAL
I/O
PORT
RESET
MCLK
SE
VINP5
VINN5
SIGNAL
CONDITIONING
0/38dB
PGA
VINP6
VINN6
SIGNAL
CONDITIONING
0/38dB
PGA
ANALOG
⌺-⌬
MODULATOR
ANALOG
⌺-⌬
MODULATOR
DECIMATOR
DECIMATOR
SDO
SDOFS
REV. A
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