CDCM6208 datasheet(16/94 Pages) TI2

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CDCM6208

SCAS931G – MAY 2012 – REVISED JANUARY 2018

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Product Folder Links: CDCM6208

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6.20 Device Individual Block Current Consumption

VDD_Yx_Yy, VDD_PRI, VDD_SEC, VDD_PLLx, DVDD, VDD_VCO = 1.8 V, 2.5 V, or 3.3 V, TA = –40°C to 85°C, Output

Types = LVPECL/CML/LVDS/LVCMOS/HCSL

BLOCK

CONDITION

TYPICAL CURRENT CONSUMPTION (mA)

Core

CDCM6208 Core, active mode, PS_A = PS_B = 4

Output Buffer

CML output, AC-coupled with 100-

Ω diff load

24.25

LVPECL, AC-coupled with 100-

Ω diff load

LVCMOS output, transient, 'C L' load, 'f' MHz output

frequency, 'V' output swing

1.8 + V x f OUT x (C L+ 12 x 10

-12) x 10 3

LVDS output, AC-coupled with 100-

Ω diff load

19.7

HCSL output, 50-

Ω load to GND on each output pin

Output Divide Circuitry

Integer Divider Bypass (Divide = 1)

Integer Divide Enabled, Divide > 1

Fractional Divider Enabled

additional current when PS_A differs from PS_B

Total Device, CDCM6208

Device Settings (V2)

PRI input enabled, set to LVDS mode

SEC input XTAL

Input bypass off, PRI only sent to PLL

Reference clock 30.72 MHz

PRI input divider set to 1

Reference input divider set to 1

Charge Pump Current = 2.5 mA

VCO Frequency = 3.072 GHz

PS_A = PS_B divider ration = 4

10. Feedback divider ratio = 25

11. Output divider ratio = 5

12. Fractional divider pre-divider = 2

13. Fractional divider core input frequency = 384 MHz

14. Fractional divider value = 3.84, 5.76, 3.072, 7.68

15. CML outputs selected for CH0-3 (153.6 MHz)

LVDS outputs selected for CH4-7 (100 MHz, 66.66 MHz,

125 MHz, 50 MHz)

(excl. I termination_resistors)

(1.8 V: 251 mA

2.5 V: 254 mA

3.3 V: 257 mA)

(incl. I termination_resistors)

(1.8 V: 310 mA

2.5 V: 313 mA

3.3 V: 316 mA)

Total Device, CDCM6208

Power Down (PDN = '0')

0.35

Helpful Note: The CDCM6208 User GUI does an excellent job estimating the total device current consumption

based on the actual device configuration. Therefore, TI recommends using the GUI to estimate device power

consumption.

The individual supply pin current consumption for Pin mode P23 was measured to come out the following:

Table 1. Individual Supplies Measured

Y0-1

Y2-3

SEC

(VSEC = 1.8V)

SEC

(VSEC = 2.5V)

PRI

PLL1

PLL2

VCO

DVDD

Total

PWR PIN 39 = GND

VPRI = 1.8 V

VOUT = 1.8 V

61 mA

40 mA

21 mA

29 mA

30 mA

31 mA

12 mA

70 mA

1.5 mA

295.5

CDCM6208 Datasheet(PDF) 16 Page - Texas Instruments

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