GC5318 Datasheet, PDF (42/45 Pages) Texas Instruments – HIGH-DENSITY DIGITAL UPCONVERTER

GC5318
HIGH-DENSITY DIGITAL UPCONVERTER
SLWS187 – JULY 2006
www.ti.com
6.3 Thermal Characteristics
THERMAL CONDUCTIVITY⁽¹⁾
θ_JA
θ_JA2m
θ_JC
Theta junction-to-ambient (still air)
Theta junction-to-ambient (2m/s estimated)
Theta junction-to-case
(1) Air flow reduces θ_JA and is highly recommended.
388 BGA
13.5
9.3
2.4
UNIT
°C/W
°C/W
°C/W
6.4 Power Consumption
The maximum power consumption is a function of the operating mode of the chip. The cmd5318 estimates
the typical power supply current for the chip in a specific configuration. The AC Characteristics table
provides maximum current in a maximum configuration used in production test.
Current consumption on the pad supply is primarily due to the external loads and follows C x V x F.
Internal loads are estimated at 2 pF per pin. Data outputs have a transition density of going from a zero to
a one, once per four clocks, while clock outputs transition every cycle. The frame strobes consume
negligible power due to the low transition frequency. In general:
Ipad = Σ DataPad/4 x C x F x V + Σ ClockPad x C x F x V
A worst case current would be all transmit ports operating at 125 MHz.
Ipad = (1+(4 x 18 + 4 x 2 x 6)/4) x (C + 2pF) x Fout x Vpad = 31 x 22 pF x 125 MHz x 3.3 V = 280 mA.
A more typical application with two ports active would use roughly 150 mA.
6.5 DC Operating Conditions
At –40°C to +85°C case, unless otherwise noted.
PARAMETER
V_IL
V_IH
V_OL
V_OH
| I_PU |
| I_PD |
| I_IN |
I_CCQ
C_IN
C_BI
Voltage input low⁽¹⁾⁽²⁾
Voltage input high⁽¹⁾⁽²⁾
Voltage output low⁽¹⁾⁽²⁾ (I_OL = 2 mA)
Voltage output high⁽¹⁾⁽²⁾ (I_OH = –2 mA)
Pullup current (V_IN = 0 V) (tdi, tms, trst_n, reset_n) (nominal 20 µA)⁽¹⁾⁽²⁾
Pulldown current (V_IN = V_PAD) (all other inputs and bidirs) (nominal 20 µA)⁽²⁾
Leakage (V_IN = V_PAD) (tdi, tms, trst_n, reset_n)⁽²⁾
Leakage (V_IN = 0) (all other inputs and bidirs)⁽²⁾
Leakage (V_IN = 0 or V_PAD) (all outputs)⁽²⁾
Quiescent supply current, I_CORE(2)
Capacitance for inputs⁽³⁾
Capacitance for bidirectionals⁽³⁾
VPAD = 3 V to 3.6 V
MIN TYP MAX
0.8
2
0.5
2.4
V_PAD
5
35
5
35
2
2
2
8
5
5
(1) Voltages are measured at low speed. Output voltages are measured with the indicated current load.
(2) Each part is tested at +100°C case temperature for the given specification. Lots are sample tested at –40°C.
(3) Controlled by design and process and not directly tested.
UNIT
V
V
V
V
µA
µA
µA
mA
pF
pF
42
Specifications