8936

VOICE

COIL

MOTOR

DRIVER

ELECTRICAL CHARACTERISTICS at T

A

= +25

°C, V

CC

= V

DD

= 5.0 V, V

REF

= V

IN

=

2.0 V,

Load = 150

µH/3.5 Ω (unless otherwise noted).

(Source + Sink)

Limits

Characteristic

Symbol

Test Conditions

Min.

Typ.

Max.

Units

Error Amplifier

Input Offset Voltage

——

50

mV

Current Gain

H GAIN

≥ 3.5 V

7200

8000

8800

—

H GAIN

≤ 0.7 V

1800

2000

2200

—

Current Gain Linearity

——

±10

%

——

±10

%

Reference Voltage Range

1.5

—

2.5

V

Current-Sense Amplifier

Voltage Gain

—

1.0

——

Input Offset Voltage

——

±25

mV

Output Drivers

Output Saturation Voltage

—

0.25

—

V

—

1.5

—

V

Retract Output Saturation Voltage

——

1.0

V

Output Current

Pulse Test,

±600 mA Limited

——

±500

mA

Full Power Bandwidth

BW

-3 dB

1.0

——

kHz

Window Comparator

Lower Trip Point

1.12

1.25

1.38

V

Upper Trip Point

2.47

2.75

3.03

V

Uncommitted Op Amp

Voltage Gain

—

91

—

dB

Unity Gain Bandwidth

BW

—

1.0

—

MHz

Max. Load Capacitance

40

——

pF

Slew Rate

SR

—

4.2

—

V/

µs

Output Voltage

2.5

—

3.5

V

Max. Output Current

—

±250

—

µA

Input Offset Voltage

——

±10

mV

Continued next page …

Negative current is defined as coming out of (sourcing) the specified device terminal.

Typical Data is for design information only.