AMC1204_14 Datasheet, PDF (5/37 Pages) Texas Instruments – 20MHz, Second-Order, Isolated Delta-Sigma Modulator for Current-Shunt Measurement

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 sinc³ filter with OSR = 256, unless otherwise noted. Typical values are at T_A = +25°C,
AVDD = 5V, and DVDD = 3.3V.
PARAMETER
T_A
Specified ambient temperature range
RESOLUTION
Resolution
DC ACCURACY
INL
Integral linearity error⁽¹⁾
DNL
V_OS
TCV_OS
G_ERR
TCG_ERR
PSRR
Differential nonlinearity
Offset error⁽²⁾
Offset error thermal drift
Gain error⁽²⁾
Gain error thermal drift
Power-supply rejection ratio
ANALOG INPUTS
FSR
Full-scale differential voltage input range
Specified FSR
V_CM
Operating common-mode signal⁽³⁾
C_I
Input capacitance to AGND
C_ID
Differential input capacitance
R_ID
Differential input resistance
I_IL
Input leakage current
CMTI
Common-mode transient immunity
CMRR
Common-mode rejection ratio
EXTERNAL CLOCK
t_CLKIN
f_CLKIN
Clock period
Input clock frequency
Duty_CLKIN Duty cycle
AC ACCURACY
SINAD
Signal-to-noise + distortion
SNR
Signal-to-noise ratio
THD
Total harmonic distortion
SFDR
Spurious-free dynamic range
DIGITAL INPUTS⁽³⁾
I_IN
Input current
C_IN
Input capacitance
CMOS logic family
V_IH
High-level input voltage
V_IL
Low-level input voltage
TEST CONDITIONS
T_A = –40°C to +85°C
T_A = –40°C to +105°C
VINP – VINN
VINP or VINN
VINP – VINN = ±250mV
VINP – VINN = ±320mV
V_IN from 0V to 5V at 0Hz
V_IN from 0V to 5V at 100kHz
5MHz ≤ f_CLKIN < 20MHz
20MHz ≤ f_CLKIN ≤ 22MHz
f_IN = 1kHz, T_A = –40°C to +85°C
f_IN = 1kHz, T_A = –40°C to +105°C
f_IN = 1kHz, T_A = –40°C to +85°C
f_IN = 1kHz, T_A = –40°C to +105°C
f_IN = 1kHz, T_A = –40°C to +85°C
f_IN = 1kHz, T_A = –40°C to +105°C
f_IN = 1kHz, T_A = –40°C to +85°C
f_IN = 1kHz, T_A = –40°C to +105°C
V_IN = DVDD to DGND
DVDD = 4.5V to 5.5V
DVDD = 4.5V to 5.5V
AMC1204, AMC1204B
MIN
TYP
–40
MAX
+105
UNIT
°C
16
Bits
–8
±2
-16
±5
–1
–1
±0.1
–3.5
±1
–2
±0.5
±30
79
8
LSB
16
LSB
1
LSB
1
mV
3.5 μV/°C
2
%
ppm/°C
dB
–250
–160
–10
-50
15
±320
7
3.5
12.5
108
114
250
AVDD
10
50
mV
mV
mV
pF
pF
kΩ
μA
μA
kV/μs
dB
dB
45.5
50
5
20
40
50
45
50
200
ns
22
MHz
60
%
55
%
78
87
70
87
84
88
83
88
–96
-96
82
96
72
96
dB
dB
dB
dB
–80
dB
-70
dB
dB
dB
–10
10
μA
5
pF
CMOS with Schmitt-trigger
0.7DVDD
DVDD + 0.3
V
–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.
Copyright © 2011–2013, Texas Instruments Incorporated
Submit Documentation Feedback
5
Product Folder Links: AMC1204 AMC1204B