AMC1304L05 Datasheet, PDF (6/39 Pages) Texas Instruments – High-Precision Reinforced Isolated Delta-Sigma Modulators

AMC1304L05, AMC1304L25, AMC1304M05, AMC1304M25
SBAS655C – SEPTEMBER 2014 – REVISED SEPTEMBER 2015
www.ti.com
7.5 Electrical Characteristics: AMC1304x05
All minimum and maximum specifications are at T_A = –40°C to 125°C, LDOIN = 4.0 V to 18.0 V, DVDD = 3.0 V to 5.5 V,
AINP = –50 mV to 50 mV, AINN = 0 V, and sinc³ filter with OSR = 256, unless otherwise noted.
Typical values are at T_A = 25°C, CLKIN = 20 MHz, LDOIN = 15.0 V, and DVDD = 3.3 V.
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX UNIT
ANALOG INPUTS
V_Clipping
Maximum differential voltage input range
(AINP-AINN)
±62.5
mV
FSR
Specified linear full-scale range
(AINP-AINN)
–50
50
mV
V_CM
C_ID
I_IB
R_ID
I_IO
CMTI
Operating common-mode input range
Differential input capacitance
Input bias current
Differential input resistance
Input offset current
Common-mode transient immunity
Inputs shorted to AGND
–0.032
1.2
V
2
pF
–97
–72
–57
μA
5
kΩ
±5
nA
15
kV/μs
CMRR
BW
Common-mode rejection ratio
Input bandwidth
f_IN = 0 Hz,
V_{CM min} ≤ V_IN ≤ V_{CM max}
f_IN from 0.1 Hz to 50 kHz,
V_{CM min} ≤ V_IN ≤ V_{CM max}
–98
dB
–85
800
kHz
DC ACCURACY
DNL
INL
Differential nonlinearity
Integral nonlinearity ⁽¹⁾
Resolution: 16 bits
Resolution: 16 bits
–0.99
0.99
LSB
–4
±1.5
4
LSB
E_O
TCE_O
E_G
TCE_G
PSRR
Offset error
Offset error thermal drift ⁽²⁾
Gain error
Gain error thermal drift ⁽³⁾
Power-supply rejection ratio
Initial, at 25°C
Initial, at 25°C
LDOIN from 4 V to 18 V, at dc
LDOIN from 4 V to 18 V, from 0.1 Hz to
50 kHz
–50
–1.3
–0.3%
–40
±2.5
–0.02%
±20
–110
–110
50
1.3
0.3%
40
µV
μV/°C
ppm/°C
dB
AC ACCURACY
SNR
Signal-to-noise ratio
SINAD
Signal-to-noise + distortion
THD
Total harmonic distortion
SFDR
Spurious-free dynamic range
DIGITAL INPUTS/OUTPUTS
f_IN = 1 kHz
f_IN = 1 kHz
f_IN = 1 kHz
f_IN = 1 kHz
76
81.5
76
81
–90
81
90
dB
dB
–81
dB
dB
External Clock
f_CLKIN
Duty_CLKIN
Input clock frequency
Duty cycle
5 MHz ≤ f_CLKIN ≤ 20.1 MHz
5
40%
20
50%
20.1
60%
MHz
(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 a number of LSBs or as a percent of the specified linear full-scale range (FSR).
(2) Offset error drift is calculated using the box method, as described by the following equation:
TCE _O
value_MAX value_MIN
TempRange
(3) Gain error drift is calculated using the box method, as described by the following equation:
TCE _G ( ppm)
¨¨©§
value _MAX value _MIN
value u TempRange
¸¸¹· ^{u10 6}
6
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