AMC7812SPAPR datasheet(3/92 Pages) TI

3 / 92 page

AMC7812

www.ti.com

SBAS513E – JANUARY 2011 – REVISED SEPTEMBER 2013

ELECTRICAL CHARACTERISTICS

At TA = –40°C to +105°C, AVDD = DVDD = 4.5V to 5.5V, AVCC = +15V, AGND = DGND = 0V, IOVDD = 2.7V to 5.5V, internal

2.5V reference, and the DAC output span = 0V to 5V, unless otherwise noted.

AMC7812

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

DAC PERFORMANCE

DAC DC ACCURACY

Resolution

Bits

Measured by line passing through codes 020h

INL

Relative accuracy

±1

LSB

and FFFh

12-bit monotonic, Measured by line passing

DNL

Differential nonlinearity

±0.3

±1

LSB

through codes 020h and FFFh

TA = +25°C, DAC output = 5.0V

±10

TUE

Total unadjusted error

TA = +25°C, DAC output = 12.5V

±30

TA = +25°C, DAC output = 0V to +5V,

±2

code 020h

Offset error

TA = +25°C, DAC output = 0V to +12.5V,

±5

code 020h

Offset error temperature coefficient

±1

ppm/°C

External reference, output = 0V to +5V

±0.025

±0.15

%FSR

Gain error

External reference, output = 0V to +12.5V

-0.15

±0.3

%FSR

Gain temperature coefficient

±2

ppm/°C

DAC OUTPUT CHARACTERISTICS

VREF = 2.5V, gain = 2

Output voltage range(1)

VREF = 2.5V, gain = 5

12.5

DAC output = 0V to +5V, code 400h to C00h, to

Output voltage settling time(2)

½ LSB, from CS rising edge,

µs

RL = 2kΩ, CL = 200pF

Slew rate(2)

1.5

V/µs

Short-circuit current(2)

Full-scale current shorted to ground

Source within 200mV of supply, TA = +25°C

+10

Sink within 300mV of supply, TA = +25°C

-10

Load current

DAC output = 0V to +5V, code B33h. Source

and/or sink with voltage drop < 25mV, TA: -40°C

±8

to 95°C(3)

Capacitive load stability(2)

RL = ∞

DC output impedance(2)

Code 800h

0.3

Power-on overshoot

AVCC 0 to 5V, 2ms ramp

Digital-to-analog glitch energy

Code changes from 7FFh to 800h, 800h to 7FFh

0.15

nV-s

Digital feedthrough

Device is not accessed

0.15

nV-s

TA = +25°C, at 1kHz, code 800h, gain = 2,

nV/

√Hz

excludes reference

Output noise

f = 0.1Hz to 10Hz, excludes reference

µVPP

DAC REFERENCE INPUT

Reference voltage input range

REF-DAC pin

2.6

Input current(2)

VREF = 2.5V

170

µA

(1)

The output voltage must not be greater than AVCC. See the DAC Output section for more details.

(2)

Sampled during initial release to ensure compliance; not subject to production testing.

(3)

Valid only for material manufactured on or after October 2012.

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