AMC1204-Q1_15 Datasheet, PDF (5/33 Pages) Texas Instruments – 20 MHz, Second-Order, Isolated Delta-Sigma Modulator for Current-Shunt Measurement

AMC1204-Q1
www.ti.com
SLAS886B – JULY 2012 – REVISED JANUARY 2013
ELECTRICAL CHARACTERISTICS
All minimum/maximum specifications at T_A = –40°C to 125°C, AVDD = 4.5 V to 5.5 V, DVDD = 2.7 V to 5.5 V, VINP = –250
mV to 250 mV, VINN = 0 V, and sinc³ filter with OSR = 256, unless otherwise noted. Typical values are at T_A = 25°C,
AVDD = 5 V, and DVDD = 3.3 V.
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⁽²⁾
Offset error⁽³⁾
Offset error thermal drift
Gain error⁽³⁾
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⁽²⁾
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⁽²⁾
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 125°C
VINP – VINN
VINP or VINN
VINP – VINN = ±250 mV
VINP – VINN = ±320 mV
V_IN from 0 V to 5 V at 0 Hz
V_IN from 0 V to 5 V at 100 kHz
5 MHz ≤ f_CLKIN < 20 MHz
20 MHz ≤ f_CLKIN ≤ 22 MHz
f_IN = 1 kHz, T_A = –40°C to 105°C
f_IN = 1 kHz, T_A = –40°C to 125°C
f_IN = 1 kHz, T_A = –40°C to 105°C
f_IN = 1 kHz, T_A = –40°C to 125°C
f_IN = 1 kHz, T_A = –40°C to 105°C
f_IN = 1 kHz, T_A = –40°C to 125°C
f_IN = 1 kHz, T_A = –40°C to 105°C
f_IN = 1 kHz, T_A = –40°C to 125°C
V_IN = DVDD to DGND
DVDD = 4.5 V to 5.5 V
DVDD = 4.5 V to 5.5 V
AMC1204-Q1
MIN
TYP
–40
MAX
125
UNIT
°C
16
Bits
–8
±2
-16
±5
–1
–1
±0.1
–3.5
±1
–2.5
±0.5
±30
79
8
LSB
16
LSB
1
LSB
1
mV
3.5 μV/°C
2.5
%
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
%
70
87
69
87
83
88
82
88
–96
–96
72
96
71
96
dB
dB
dB
dB
–70
dB
–69
dB
dB
dB
–10
10
μA
5
pF
CMOS with Schmitt-trigger
0.7 DVDD
DVDD + 0.3
V
–0.3
0.3 DVDD
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 500 mV input range.
(2) Ensured by design.
(3) Maximum values, including temperature drift, are ensured over the full specified temperature range.
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