AMC7812BSPAPR datasheet(3/92 Pages) TI1

3 / 92 page

AMC7812B

www.ti.com

SBAS625A – SEPTEMBER 2013 – REVISED SEPTEMBER 2013

ELECTRICAL CHARACTERISTICS

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

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

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

DAC PERFORMANCE

DAC DC ACCURACY

Resolution

Bits

TA = –40°C to +105°C, measured by line passing

±1

LSB

through codes 020h and FFFh

INL

Relative accuracy

TA = –40°C to +125°C, measured by line passing

±1.25

LSBs

through codes 020h and FFFh

TA = –40°C to +125°C, measured by line passing

DNL

Differential nonlinearity

±0.3

±1

LSB

through codes 020h and FFFh

TA = +25°C, DAC output = 5.0 V

±10

TUE

Total unadjusted error

TA = +25°C, DAC output = 12.5 V

±30

TA = +25°C, DAC output = 0 V to +5 V,

±2

code 020h

Offset error

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

±5

code 020h

Offset error temperature coefficient

±1

ppm/°C

TA = –40°C to +125°C, external reference,

±0.025

±0.15

%FSR

output = 0 V to +5 V

Gain error

TA = –40°C to +125°C, external reference,

–0.15

±0.3

%FSR

output = 0 V to +12.5 V

Gain temperature coefficient

±2

ppm/°C

DAC OUTPUT CHARACTERISTICS

TA = –40°C to +125°C, VREF = 2.5 V, gain = 2

Output voltage range(1)

TA = –40°C to +125°C, VREF = 2.5 V, gain = 5

12.5

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

Output voltage settling time(2)

to 1/2 LSB, from CS rising edge, RL = 2 kΩ,

µs

CL = 200 pF

Slew rate(2)

1.5

V/µs

Short-circuit current(2)

Full-scale current shorted to ground

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

+10

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

–10

Load current

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

sink with voltage drop < 25 mV,

±8

TA = –40°C to +95°C

Capacitive load stability(2)

RL = infinite

DC output impedance(2)

Code 800h

0.3

Power-on overshoot

AVCC 0 V to 5 V, 2-ms 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 1 kHz, code 800h, gain = 2,

nV/

√Hz

excludes reference

Output noise

f = 0.1 Hz to 10 Hz, excludes reference

µVPP

DAC REFERENCE INPUT

Reference voltage input range

TA = –40°C to +125°C, REF-DAC pin

2.6

Input current(2)

VREF = 2.5 V

170

µA

(1)

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

(2)

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

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