CDCM6208V1FRGZR datasheet(16/87 Pages) TI1

Part #	CDCM6208V1FRGZR

Description	2:8 Clock Generator, Jitter Cleaner with Fractional Dividers

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Manufacturer	TI1 [Texas Instruments]

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CDCM6208V1F

SCAS943 – MAY 2015

www.ti.com

8.20 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

CDCM6208V1F Core, active mode, PS_A = PS_B = 4

75

CML output, AC coupled w/ 100

Ω diff load

24.25

LVPECL, AC coupled w/ 100

Ω diff load

40

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

Output Buffer

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

-12) x 10 3

frequency, 'V' output swing

LVDS output, AC coupled w/ 100

Ω diff load

19.7

HCSL output, 50

Ω load to GND on each output pin

31

Integer Divider Bypass (Divide = 1)

3

Integer Divide Enabled, Divide > 1

8

Output Divide Circuitry

Fractional Divider Enabled

12

additional current when PS_A differs from PS_B

15

Device Settings (V2)

1.

PRI input enabled, set to LVDS mode

2.

SEC input XTAL

3.

Input bypass off, PRI only sent to PLL

4.

Reference clock 30.72 MHz

5.

PRI input divider set to 1

(excl. I termination_resistors)

6.

Reference input divider set to 1

(1.8 V: 251 mA

7.

Charge Pump Current = 2.5 mA

2.5 V: 254 mA

8.

VCO Frequency = 3.072 GHz

3.3 V: 257 mA)

Total Device, CDCM6208V1F

(incl. I termination_resistors)

9.

PS_A = PS_B divider ration = 4

(1.8 V: 310 mA

10. Feedback divider ratio = 25

2.5 V: 313 mA

11. Output divider ratio = 5

3.3 V: 316 mA)

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)

Total Device, CDCM6208V1F

Power Down (PDN = '0')

0.35

Helpful Note: The CDCM6208V1F User GUI does an excellent job estimating the total device current

consumption based on the actual device configuration. Therefore, it is recommended to use the GUI to estimate

device power consumption.

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

Table 1. Individual Supplies Measured

SEC

Y0-1

Y2-3

Y4

Y5

Y6

Y7

PRI

PLL1

PLL2

VCO

DVDD

TOTAL

(VSEC = 1.8V)

(VSEC = 2.5V)

PWR PIN 39 = GND

VPRI = 1.8 V

61 mA

40 mA

21 mA

29 mA

30 mA

31 mA

12 mA

70 mA

1.5 mA

295.5 mA

VOUT = 1.8 V

16

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