Datasheet

AMC1204
AMC1204B
www.ti.com SBAS512D –APRIL 2011–REVISED DECEMBER 2013
ELECTRICAL CHARACTERISTICS
All minimum/maximum specifications at T
A
= –40°C to +105°C, AVDD = 4.5V to 5.5V, DVDD = 2.7V to 5.5V, VINP = –250mV
to +250mV, VINN = 0V, and sinc
3
filter with OSR = 256, unless otherwise noted. Typical values are at T
A
= +25°C,
AVDD = 5V, and DVDD = 3.3V.
AMC1204, AMC1204B
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
T
A
Specified ambient temperature range –40 +105 °C
RESOLUTION
Resolution 16 Bits
DC ACCURACY
T
A
= –40°C to +85°C –8 ±2 8 LSB
INL Integral linearity error
(1)
T
A
= –40°C to +105°C -16 ±5 16 LSB
DNL Differential nonlinearity –1 1 LSB
V
OS
Offset error
(2)
–1 ±0.1 1 mV
TCV
OS
Offset error thermal drift –3.5 ±1 3.5 μV/°C
G
ERR
Gain error
(2)
–2 ±0.5 2 %
TCG
ERR
Gain error thermal drift ±30 ppm/°C
PSRR Power-supply rejection ratio 79 dB
ANALOG INPUTS
FSR Full-scale differential voltage input range VINP – VINN ±320 mV
Specified FSR –250 250 mV
V
CM
Operating common-mode signal
(3)
–160 AVDD mV
C
I
Input capacitance to AGND VINP or VINN 7 pF
C
ID
Differential input capacitance 3.5 pF
R
ID
Differential input resistance 12.5 kΩ
VINP – VINN = ±250mV –10 10 μA
I
IL
Input leakage current
VINP – VINN = ±320mV -50 50 μA
CMTI Common-mode transient immunity 15 kV/μs
V
IN
from 0V to 5V at 0Hz 108 dB
CMRR Common-mode rejection ratio
V
IN
from 0V to 5V at 100kHz 114 dB
EXTERNAL CLOCK
t
CLKIN
Clock period 45.5 50 200 ns
f
CLKIN
Input clock frequency 5 20 22 MHz
5MHz ≤ f
CLKIN
< 20MHz 40 50 60 %
Duty
CLKIN
Duty cycle
20MHz ≤ f
CLKIN
≤ 22MHz 45 50 55 %
AC ACCURACY
f
IN
= 1kHz, T
A
= –40°C to +85°C 78 87 dB
SINAD Signal-to-noise + distortion
f
IN
= 1kHz, T
A
= –40°C to +105°C 70 87 dB
f
IN
= 1kHz, T
A
= –40°C to +85°C 84 88 dB
SNR Signal-to-noise ratio
f
IN
= 1kHz, T
A
= –40°C to +105°C 83 88 dB
f
IN
= 1kHz, T
A
= –40°C to +85°C –96 –80 dB
THD Total harmonic distortion
f
IN
= 1kHz, T
A
= –40°C to +105°C -96 -70 dB
f
IN
= 1kHz, T
A
= –40°C to +85°C 82 96 dB
SFDR Spurious-free dynamic range
f
IN
= 1kHz, T
A
= –40°C to +105°C 72 96 dB
DIGITAL INPUTS
(3)
I
IN
Input current V
IN
= DVDD to DGND –10 10 μA
C
IN
Input capacitance 5 pF
CMOS logic family CMOS with Schmitt-trigger
V
IH
High-level input voltage DVDD = 4.5V to 5.5V 0.7DVDD DVDD + 0.3 V
V
IL
Low-level input voltage DVDD = 4.5V to 5.5V –0.3 0.3DVDD V
(1) Integral nonlinearity is defined as the maximum deviation from a straight line passing through the end-points of the ideal ADC transfer
function expressed as number of LSBs or as a percent of the specified 500mV input range.
(2) Maximum values, including temperature drift, are ensured over the full specified temperature range.
(3) Ensured by design.
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