AMC1203 Datasheet, PDF (5/23 Pages) Texas Instruments – 1-Bit, 10MHz, 2nd-Order, Isolated Delta-Sigma Modulator

AMC1203
www.ti.com
SBAS427 – FEBRUARY 2008
ELECTRICAL CHARACTERISTICS
At T_A = –40°C to +105°C, V_DD1 = 4.5V to 5.5V, V_DD2 = 4.5V to 5.5V, V_IN+ = –280mV to +280mV, V_IN– = 0V, and sinc³ filter with
OSR = 256, unless otherwise noted.
RESOLUTION
DC ACCURACY
PARAMETER
INL
Integral linearity error⁽²⁾
DNL
V_OS
TCV_OS
Differential nonlinearity⁽³⁾
Offset error⁽⁴⁾
Offset error thermal drift
G_ERR
Gain error
TCG_ERR Gain error thermal drift
PSRR Power-supply rejection ratio
ANALOG INPUTS
FSR
V_CM
C_I
C_ID
R_ID
I_IL
CMTI
Full-scale differential voltage input range
Operating common-mode signal⁽³⁾
Input capacitance to GND1
Differential input capacitance
Differential input resistance
Input leakage current
Common-mode transient immunity
CMRR Common-mode rejection ratio
INTERNAL CLOCK
t_CLK
Clock period
f_CLK
Clock frequency
t_H
Clock high-time
t_D1
Data valid time after falling edge of clock
AC ACCURACY
SINAD Signal-to-noise + distortion
SNR
Signal-to-noise ratio
THD
Total harmonic distortion
SFDR Spurious-free dynamic range
TEST CONDITIONS
AMC1203
AMC1203B
AMC1203
AMC1203B
(V_IN+) – (V_IN–)
V_IN+ or V_IN–
V_IN from 0V to 5V at 0Hz
V_IN from 0V to 5V at 50kHz
See Figure 2
See Figure 2
See Figure 2
See Figure 2
f_IN = 1kHz
f_IN = 1kHz
AMC1203, f_IN = 1kHz
AMC1203B, f_IN = 1kHz
AMC1203, f_IN = 1kHz
AMC1203B, f_IN = 1kHz
AMC1203
MIN
TYP ⁽¹⁾
16
MAX
UNIT
Bits
±3
±2
–1
–1
±0.1
±1.5
–2
±0.2
–1
±0.2
±20
80
±9 LSB
±6 LSB
+1 LSB
1 mV
±5 µV/°C
2
%
1
%
ppm/°C
dB
–320
–0.1
3
6
28
–5
15
92
105
320 mV
5
V
pF
pF
kΩ
5
nA
kV/µs
dB
dB
83.33
8
(t_CLK/2) – 8
–2
100
125
10
12
50 (t_CLK/2) + 8
0
2
ns
MHz
ns
ns
80
85
dB
80.5
85
dB
–92
–84.5
dB
–95
–88
86
92
dB
89
95
(1) All typical values are at T_A = +25°C
(2) Integral nonlinearity is defined as the maximum deviation of the line through the inputs of the specified input range of the transfer curve
of the specified VIN expressed either as number of LSBs, or as a percent of the specified 560mV input range.
(3) Ensured by design.
(4) Maximum values, including temperature drift, are ensured over the full specified temperature range.
Copyright © 2008, Texas Instruments Incorporated
Product Folder Link(s): AMC1203
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