NJ88C50SLASHMASLASHNP datasheet(11/17 Pages) ZARLINK

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NJ88C50

DYNAMIC

Vdd = 5V

± 10%, Tamb = -40 to +85°C

Parameter

Modulus control - MOD1 MOD2

Output voltage high

Output voltage low

Output signals

Min

Vdd-0.4

Typ

Max

Vdd

0.4

Unit

Condition

Push-Pull output

IOH = 0.5mA

IOL = 0.5mA

Modulus output truth table

MOD2

MOD1

Prescaler modulus

Typ

Ipda

Parameter

Output signal - PDA

Up current - See Note 5

Down current - See Note 5

Tristate

Output signals - Auxiliary synthesiser

Min

-10%

Max

+10%

Unit

µA

DYNAMIC

Vdd = 5V, Tamb = -40 to +85

°C

Parameter

Output signal - PDP

Iprop(0) Up

see notes 1, 3 & 4

Iprop(0) Down

see notes 1, 3 & 4

Iprop(1) Up

see notes 2&3

Iprop(1) Down

see notes 2&3

Tristate

Output signals - Main synthesiser, proportional output

Min

-10%

Typ

+Ibo.CN

-Ibo.CN

+Ibo.CN.2L+1

-Ibo.CN.2L+1

Max

+10%

DYNAMIC

Vdd = 5V, Tamb = -40 to +85

°C

Unit

µA

Condition

0<VPD<4.55V, Strobe=0V

0.45<VPD<5V, Strobe=0V

0<VPD<4.55V, Strobe=5V

0.45<VPD<5V, Strobe=5V

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 100

µA 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

Condition

0<VPD<4.35V

0.65<VPD<5V

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