ZN409CE

2

Pin 14

Pin 14

-10

°C to +65°C

-10

°C to +65°C, 1.3mA load current

RSRR =

Ω,

Ω (potentiometer slider set

mid-way)

µF

15ms repetition rate

T = 25

°C

T = 10

°C

Quiescent

T = 25

°C

T = -10

°C

Input threshold (lower)

Input threshold (upper)

Ratio upper/lower threshold

Input resistance

Input current

Regulator voltage

Regulator supply rejection ratio

Monostable Linearity

Monostable period temperature

coefficient

Output Schmitt deadband

Minimum output pulse

Error pulse for full drive

Total deadband

PNP drive

Output saturation voltage

Direction bistable output

Supply voltage range

Supply current

Total external current from regulator

regulated voltage)

1.35

1.6

1.3

35

650

2.3

-

4.0

-

±3

4.5

130

±6.5

70

65

400

3.6

6.5

10

-

-

-

1.25

1.5

1.2

27

500

2.2

300

3.5

+0.01

±1.5

3.5

100

±5

55

50

300

2.8

5

6.7

-

0.7

0.5

1.15

1.4

1.1

20

350

2.1

200

-

-

±1

2.5

70

±3.5

40

35

-

2

3.5

4.6

1.3

-

-

V

V

k

Ω

µA

V

%

%/

°C

µs

ms

µs

µs

mA

mA

mV

mA

V

mA

mA

V

V

Value

Min.

Typ.

Max.

Units

Characteristics

Test conditions

ELECTRICAL CHARACTERISTICS

Test conditions (unless otherwise stated):

CIRCUIT DESCRIPTION

The ZN409CE incorporates a precision dual voltage

source providing 1.5V for internal use and 2.2V for external

circuit requirements.

The input circuit is a Schmitt trigger allowing servo opera-

tion independent of edge speed, as obtained from the re-

ceiver-decoder.

Output from the Schmitt trigger is fed to the deadband and

monostable circuits.

The deadband circuit prvides a

prgrammable area of insensitivity to input pulse in order to

eliminate hunting and overshoot. Dynamic feedback can be

used to reduce the width of the deadband to acceptable levels,

and to maintain correct servo operation.

The monostable circuits provide the inputs to the pulse

comparison circuit which determines direction and amount of

drive required to reach the new position. The output drive is

also controlled by the pulse expansion circuit. This circuit

ensures that a stationary motor will start rotating without

drawing full stall current. This gives much improved battery

life.