CDCE937 datasheet(6/30 Pages) TI1

部品番号	CDCE937

部品情報	PROGRAMMABLE 3-PLL VCXO CLOCK SYNTHESIZER

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CDCE937-Q1

CDCEL937-Q1

SCAS892B – FEBRUARY 2010 – REVISED MAY 2010

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DEVICE CHARACTERISTICS

over recommended operating ambient temperature range (unless otherwise noted)

PARAMETER

TEST CONDITIONS

MIN

TYP(1)

MAX

UNIT

OVERALL PARAMETER

All PLLS on

29

All outputs off, f(CLK) = 27 MHz,

IDD

Supply current (see Figure 3)

mA

f(VCO) = 135 MHz

Per PLL

9

CDCE937,

3.1

VDDOUT = 3.3 V

No load, all outputs on,

IDDOUT

Output supply current (see Figure 4)

mA

fOUT = 27 MHz

CDCEL937,

1.5

VDDOUT = 1.8 V

Power-down current. Every circuit powered

IDD(PD)

fIN = 0 MHz,

VDD = 1.9 V

50

mA

down except SDA/SCL.

Supply voltage Vdd threshold for power-up

V(PUC)

0.85

1.45

V

control circuit

f(VCO)

VCO frequency range of PLL

80

230

MHz

Vddout = 3.3 V

230

fOUT

LVCMOS output frequency

MHz

Vddout = 1.8 V

230

LVCMOS PARAMETER

VIK

LVCMOS input voltage

VDD = 1.7 V; II = –18 mA

–1.2

V

II

LVCMOS Input current

VI = 0 V or VDD; VDD = 1.9 V

±5

mA

IIH

LVCMOS Input current for S0/S1/S2

VI = VDD; VDD = 1.9 V

5

mA

IIL

LVCMOS Input current for S0/S1/S2

VI = 0 V; VDD = 1.9 V

–6

mA

Input capacitance at Xin/Clk

VI(Clk) = 0 V or VDD

6

CI

Input capacitance at Xout

VI(Xout) = 0 V or VDD

2

pF

Input capacitance at S0/S1/S2

VIS = 0 V or VDD

3

LVCMOS PARAMETER FOR Vddout = 3.3 V (CDCE937)

Vddout = 3 V, IOH = –0.1 mA

2.9

VOH

LVCMOS high-level output voltage

Vddout = 3 V, IOH = –8 mA

2.4

V

Vddout = 3 V, IOH = –12 mA

2.2

Vddout = 3 V, IOL = 0.1 mA

0.1

VOL

LVCMOS low-level output voltage

Vddout = 3 V, IOL = 8 mA

0.5

V

Vddout = 3 V, IOL = 12 mA

0.8

tPLH,

Propagation delay

All PLL bypass

3.2

ns

tPHL

tr/tf

Rise and fall time

Vddout= 3.3 V (20%–80%)

0.6

ns

1 PLL switching, Y2-to-Y3

60

90

tjit(cc)

Cycle-to-cycle jitter(2) (3)

ps

3 PLL switching, Y2-to-Y7

100

150

1 PLL switching, Y2-to-Y3

70

100

tjit(per)

Peak-to-peak period jitter(3)

ps

3 PLL switching, Y2-to-Y7

120

180

fOUT = 50 MHz; Y1-to-Y3

60

tsk(o)

Output skew (4) , See Table 2

ps

fOUT = 50 MHz; Y2-to-Y5

160

odc

Output duty cycle (5)

fVCO = 100 MHz; Pdiv = 1

45%

55%

(1)

All typical values are at respective nominal VDD.

(2)

10000 cycles.

(3)

Jitter depends on configuration. Data is taken under the following conditions: 1-PLL : fIN = 27MHz, Y2/3 = 27 MHz, (measured at Y2),

3-PLL: fIN = 27 MHz, Y2/3 = 27 MHz (measured at Y2), Y4/5 = 16.384 MHz, Y6/7 = 74.25 MHz

(4)

The tsk(o) specification is only valid for equal loading of each bank of outputs, and outputs are generated from the same divider; data

taking on rising edge (tr).

(5)

odc depends on output rise and fall time (tr/tf).

6

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同様の部品番号 - CDCE937

メーカー	部品番号	データシート	部品情報
Texas Instruments	CDCE937	376Kb / 21P	[Old version datasheet] Programmable 1-PLL VCXO Clock Synthesizer With 1.8-V, 2.5-V, and 3.3-V Outputs
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	CDCE937-Q1	1Mb / 39P	[Old version datasheet] Flexible Low Power LVCMOS Clock Generator With SSC Support For EMI Reduction

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