NJ88C50 Просмотр технического описания (PDF) - Mitel Networks

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производитель

NJ88C50

Dual Low Power Frequency Synthesiser

Mitel Networks 

DYNAMIC

Vdd = 5V ± 10%, Tamb = -40 to +85°C

Output signals

Parameter

Min

Typ

Modulus control - MOD1 MOD2

Output voltage high

Output voltage low

Vdd-0.4

0

Modulus output truth table

MOD2

MOD1

0

1

0

0

1

0

1

1

DYNAMIC

Vdd = 5V, Tamb = -40 to +85°C

Output signals - Auxiliary synthesiser

Parameter

Min

Typ

Output signal - PDA

Up current - See Note 5

Down current - See Note 5

Tristate

-10%

Ipda

-10%

Ipda

NJ88C50

Max

Vdd

0.4

Unit

V

V

Condition

Push-Pull output

IOH = 0.5mA

IOL = 0.5mA

Prescaler modulus

R1

R2

R3

R4

Max

Unit

+10%

µA

+10%

µA

10

nA

Condition

0<VPD<4.35V

0.65<VPD<5V

DYNAMIC

Vdd = 5V, Tamb = -40 to +85°C

Output signals - Main synthesiser, proportional output

Parameter

Min

Typ

Max

Unit Condition

Output signal - PDP

Iprop(0) Up see notes 1, 3 & 4

-10%

+Ibo.CN

+10%

µA 0<VPD<4.55V, Strobe=0V

Iprop(0) Down see notes 1, 3 & 4

-10%

-Ibo.CN

+10%

µA 0.45<VPD<5V, Strobe=0V

Iprop(1) Up see notes 2&3

-10% +Ibo.CN.2L+1 +10%

µA 0<VPD<4.55V, Strobe=5V

Iprop(1) Down see notes 2&3

-10% -Ibo.CN.2L+1 +10%

µA 0.45<VPD<5V, Strobe=5V

Tristate

50

nA

Notes

1. The typical value of IPROP(0) is set by the programmed value of CN and the current Irsm set by the external resistor

RSM, where Ibo=Irsm / 32. Irsm is typically 32µA.

2. The typical value of IPROP(1) is set by the value of IPROP(0) and the programmed value of L.

3. The current output IPROP is specified between 100µA and 1mA.

4. The output current is monotonic over the CN range 128-255. In standard operation CN is set at a value > 128.

5. Where Ipda depends on the value of current setting resistor on RSA pin (9). Ipda max = 250µA

11

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