znbg4000 Zetex Semiconductors plc., znbg4000 Datasheet - Page 3

• Manufacturer Part Number: znbg4000
• Description: Fet Bias Controller
• Manufacturer: Zetex Semiconductors plc.

GATE CHARACTERISTICS
Notes:
1. The negative bias voltages specified are generated on-chip using an internal oscillator. Two external capacitors, C
47nF are required for this purpose.
2. The characteristics are measured using two external reference resistors R
ground. For the ZNBG4000, resistor R
For the ZNBG6000, resistor R
3. Noise voltage is not measured in production.
4. Noise voltage measurement is made with FETs and gate and drain capacitors in place on all
outputs. C
between drain outputs and ground.
SYMBOL PARAMETER
I
V
V
V
V
GO
OL
OH
OL
OH
G
Output Current Range
Output Voltage
ZNBG4000/1
Output Voltage
ZNBG6000/1
, 4.7nF, are connected between gate outputs and ground, C
Output Low
Output High
Output Low
Output High
CAL1
sets the drain current of FETs 1 and 4, resistor R
CAL1
sets the drain current of FETs 1 and 2, resistor R
CONDITIONS
I
I
I
I
I
I
I
I
I
I
I
I
D1
G1
D1
G1
D1
G1
D1
G1
D1
G1
D1
G1
to I
to I
to I
to I
to I
to I
to I
to I
to I
to I
to I
to I
D4
D4
D4
D6
D6
D6
G4
G4
G4
G6
G6
G6
4-139
=12mA
=12mA
= 8mA
=12mA
=12mA
= 8mA
=0
= -10 A
= 0
= 0
= -10 A
= 0
CAL1
CAL2
and R
Min
-30
-3.5
-3.5
0
-3.5
-3.5
0
sets the drain current of FETs 2, 3, 5 and 6.
CAL2
CAL2
of value 33k wired from pins R
Typ
sets the drain current of FETs 3 and 4.
ZNBG4000
ZNBG4000 ZNBG4001
ZNBG6000 ZNBG6001
LIMITS
D
, 10nF, are connected
Max
2000
-2
-2
1
-2
-2
1
NB
and C
UNITS
V
V
V
V
V
V
A
CAL1/2
SUB
, of
to