IDT72V36103 データシートの表示（PDF） - Integrated Device Technology
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IDT72V36103
Integrated Device Technology
IDT72V36103 Datasheet PDF : 30 Pages
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IDT72V3683/72V3693/72V36103 3.3V CMOS SyncFIFOTM WITH
BUS-MATCHING 16,384 x 36, 32,768 x 36 and 65,536 x 36
COMMERCIAL TEMPERATURE RANGE
DETERMINING ACTIVE CURRENT CONSUMPTION AND POWER DISSIPATION
The ICC(f) current for the graph in Figure 1 was taken while simultaneously reading and writing a FIFO on the IDT72V3683/72V3693/72V36103 with CLKA
and CLKB set to fS. All data inputs and data outputs change state during each clock cycle to consume the highest supply current. Data outputs were disconnected
to normalize the graph to a zero capacitance load. Once the capacitance load per data-output channel and the number of IDT72V3683/72V3693/72V36103
inputs driven by TTL HIGH levels are known, the power dissipation can be calculated with the equation below.
CALCULATING POWER DISSIPATION
With ICC(f) taken from Figure 1, the maximum power dissipation (PT) of these FIFOs may be calculated by:
PT = VCC x ICC(f) + Σ(CL x VCC2 x fo)
N
where:
N
=
CL
=
fo
=
number of used outputs (36-bit (long word), 18-bit (word) or 9-bit (byte) bus size)
output capacitance load
switching frequency of an output
100
90
80
70
60
50
40
30
20
10
0
0
fdata = 1/2 fS
TA = 25°C
CL = 0 pF
VCC = 3.3V
VCC = 3.6V
VCC = 3.0V
10
20
30
40
50
60
70
80
fS Clock Frequency MHz
Figure 1. Typical Characteristics: Supply Current (ICC) vs. Clock Frequency (fS)
7
90
100
4678 drw 03
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