Rainbow Electronics CLC5957 - Manual (Page 5)

Converter Electrical Characteristics
(Continued)
The following specifications apply for AV
CC
= DV
CC
= +5V, 66MSPS. Boldface limits apply for T
A
= T
min
= −40˚C to T
max
=
+85˚C, all other limits T
A
= 25˚C (Note 3).
Symbol Parameter Conditions Min Typ Max Units
POWER REQUIREMENTS
I
CC
Total Operating Supply Current (Note
2)
128 150 mA
Power Dissipation (Note 2) 640 750 mW
Power Supply Rejection Ratio 64 dB
Note 1: “Absolute Maximum Ratings” are limiting values, to be applied individually, and beyond which the serviceability of the circuit may be impaired. Functional
operability under any of these conditions is not necessarily implied. Exposure to maximum ratings for extended periods may affect device reliability.
Note 2: These parameters are guaranteed by test.
Note 3: Typical specifications are based on the mean test values of deliverable converters from the first three diffusion lots.
Note 4: Values guaranteed based on characterization and simulation.
Note 5: See page 14, Figure 3 for ENCODE inputs circuit.
Note 6: C
L
= 7pF DATA; 10pF DAV.
Note 7: The absolute maximum junction (T
J
max) temperature for this device is 175˚C. The maximum allowable power dissipation is dictated by T
J
max, the
junction-to-ambient thermal resistance ( θ
JA
), and the ambient temperature (T
A
), and can be calculated using the formula P
D
max = (T
J
max – T
A
)/ θ
JA
. For the 48-pin
TSSOP, θ
JA
is 56˚C/W, so P
D
max = 2.68W at 25˚C and 1.6W at the maximum operating ambient temperature of 85˚C. Note that the power dissipation of this device
under normal operation will typically be about 650 mW (640 mW quiescent power + 10 mW due to 1 TTL load on each digital output). The values of absolute
maximum power dissipation will only be reached when the CLC5957 is operated in a severe fault condition (e.g., when input or output pins are driven beyond the
power supply voltages, or the power supply polarity is reversed). Obviously, such conditions should always be avoided.
CLC5957
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