AMC7891 Datasheet, PDF (6/41 Pages) Texas Instruments – Analog Monitor and Control Circuit with 10-Bit, Multi-Channel ADC and Four DACs, Temperature Sensor, and 12 GPIOs

AMC7891
SBAS518A – AUGUST 2011 – REVISED DECEMBER 2011
www.ti.com
ELECTRICAL CHARACTERISTICS (DAC SPECIFICATIONS)
AV_DD = 4.75 to 5.5 V, GPIOV_DD = 1.8 to 5.5 V, SPIV_DD = 1.8 to 5.5 V, AGND = DGND = 0 V, External ADC reference = AV_DD,
T_A = –40°C to 105°C (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN TYP MAX UNIT
STATIC ACCURACY
Resolution
10
Bits
INL Relative accuracy
±0.05
±1 LSB
DNL Differential nonlinearity
Specified monotonic
±0.1
±1 LSB
Offset error
Code 0x008
±0.5
±5 mV
Gain error
±0.025 ±0.2 %FSR
Offset temperature coefficient
±1
ppm/°C
Gain temperature coefficient
DAC OUTPUT ⁽¹⁾
±1
ppm/°C
Full scale output voltage range
Output voltage settling time
Slew rate
Transition: Code 0x008 to 0x3F8 to within 1/2 LSB,
C_L = 2 nF, RL = ∞
0
AV_DD
V
5
µs
2
V/µs
Short circuit current
Full-scale current shorted to ground or pulled to AVDD
±30
mA
Load current
Source and/or sink within 300 mV of supply
±10
mA
Capacitive load stability
DC output impedance
R_L = ∞
10
nF
1
Ω
Power-on overshoot
Glitch energy
AV_DD 0 to 5 V, 2 ms ramp
Transition: Code 0x1FF to 0x200; 0x200 to 0x1FF
10
mV
0.15
nV-s
Output noise
T_A = 25°C, 1 kHz
Integrated noise from 0.1 Hz to 10 Hz
260
nV/√Hz
20
µV_PP
(1) Specified by design and characterization. Not tested during production.
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