AD7716BPZ Analog Devices Inc, AD7716BPZ Datasheet - Page 16

• Manufacturer Part Number: AD7716BPZ
• Description: 4-CHNL S-D ADC
• Manufacturer: Analog Devices Inc

Specifications of AD7716BPZ

• Number Of Bits: 22
• Sampling Rate (per Second): 2.23k
• Data Interface: Serial
• Number Of Converters: 4
• Power Dissipation (max): 50mW
• Voltage Supply Source: Analog and Digital, Dual ±
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 44-PLCC
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: EVAL-AD7716EBZ - BOARD EVAL FOR AD7716
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

AD7716
Multibandwidth System
Some applications may require multiple AD7716’s with differ-
ent bandwidths programmed to each device. The best way to
accomplish this is shown in Figure 12. The master mode inter-
face is used for this example but the slave mode may also be
used. The example shows an 8-channel system with Device #0
in the system programmed for a 292 Hz cutoff frequency and
Device #1 programmed for a 146 Hz cutoff frequency.
The resultant output signals are also shown. Since Device #0
has a higher bandwidth it will also have a higher update rate.
The receiving processor will be getting samples from this device
at twice the rate of Device #1.
DRDY #0
DRDY #1
SDATA
RESET
Figure 13. Output Signals for Figure 12
Figure 12. Multibandwidth System
RESET
#0
#0 #1
DRDY
RESET
DRDY
RESET
CASCIN
CASCOUT MODE
CASCIN
(292 Hz)
(146 Hz)
#0
#1
#0
MODE
#0 #1
#0
TFS
RFS
SCLK
SDATA
#0 #1
–16–
0.048 (1.21)
0.042 (1.07)
(0.50)
0.020
0.083 (2.11)
0.077 (1.96)
0.037 (0.94)
0.025 (0.64)
R
0.040 (1.02)
0.032 (0.81)
0.398 (10.11)
0.390 (9.91)
7
17
18
6
0.048 (1.21)
0.042 (1.07)
44-Lead Plastic Quad Flatpack
Dimensions shown in inches and (mm).
0.096 (2.44)
MAX
OUTLINE DIMENSIONS
0.695 (17.65)
0.685 (17.40)
0.656 (16.66)
0.650 (16.51)
IDENTIFIER
TOP VIEW
44-Lead PLCC
PIN 1
0.8
0.040 (1.02)
0.032 (0.81)
8
(P-44A)
(S-44)
SQ
SQ
34
44
0.016 (0.41)
0.012 (0.30)
0.056 (1.42)
0.042 (1.07)
33
1
40
28
PIN 1
39
29
0.557 (14.148)
0.537 (13.640)
0.398 (10.11)
0.390 (9.91)
TOP VIEW
0.180 (4.57)
0.165 (4.19)
0.110 (2.79)
0.085 (2.16)
0.033 (0.84)
0.029 (0.74)
0.032 (0.81)
0.026 (0.66)
0.025 (0.63)
0.015 (0.38)
0.021 (0.53)
0.013 (0.33)
0.050
(1.27)
BSC
0.040 (1.01)
0.025 (0.64)
11
23
REV. A
12
0.63 (16.00)
0.59 (14.99)
22