EVAL-AD7327CB AD [Analog Devices], EVAL-AD7327CB Datasheet - Page 31

• Manufacturer Part Number: EVAL-AD7327CB
• Description: 500 kSPS, 8-Channel, Software-Selectable, True Bipolar Input, 12-Bit Plus Sign ADC
• Manufacturer: AD [Analog Devices]

POWER VS. THROUGHPUT RATE
The power consumption of the AD7327 varies with throughput
rate. The static power consumed by the AD7327 is very low, and
significant power savings can be achieved as the throughput
rate is reduced. Figure 51 and Figure 52 shows the power vs.
throughput rate for the AD7327 at a V
respectively. Both plots clearly show that the average power
consumed by the AD7327 is greatly reduced as the sample
frequency is reduced. This is true whether a fixed SCLK value is
used or if it is scaled with the sampling frequency. Figure 51 and
Figure 52 show the power consumption when operating in
normal mode for a variable SCLK that scales with the sampling
frequency.
12
10
8
6
4
2
0
0
V
V
T
INTERNAL REFERENCE
A
CC
DD
Figure 51. Power vs. Throughput Rate with 3 V V
= 25°C
/V
= 3V
SS
= ±12V
100
THROUGHPUT RATE (kSPS)
200
300
CC
VARIABLE SCLK
of 3 V and 5 V,
400
CC
500
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20
18
16
14
12
10
8
6
4
2
0
0
V
V
T
INTERNAL REFERENCE
A
CC
DD
Figure 52. Power vs. Throughput Rate with 5 V V
= 25°C
/V
= 5V
SS
= ±12V
100
VARIABLE SCLK
THROUGHPUT RATE (kSPS)
200
300
400
CC
AD7327
500