AMC1203 Datasheet, PDF (6/23 Pages) Texas Instruments – 1-Bit, 10MHz, 2nd-Order, Isolated Delta-Sigma Modulator

AMC1203
SBAS427 – FEBRUARY 2008
www.ti.com
ELECTRICAL CHARACTERISTICS (continued)
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.
PARAMETER
DIGITAL OUTPUTS
V_OH
High-level output voltage
V_OL
Low-level output voltage
POWER SUPPLY
V_DD
Supply voltage
I_DD1
Analog supply current
I_DD2
Digital supply current
P_D
Power dissipation
TEST CONDITIONS
I_OH = –8mA
I_OH = –4mA
I_OL = 8mA
I_OL = 4mA
V_DD1 and V_DD2
AMC1203
MIN
TYP ⁽¹⁾
V_DD2 – 0.8
4.6
V_DD2 – 0.4
4.8
0.3
0.2
4.5
5.0
6
10
80
MAX UNIT
V
V
0.8
V
0.4
V
5.5
V
8 mA
12 mA
110 mW
EQUIVALENT INPUT CIRCUIT
A_IN+
Switching
Frequency = CLK
R_SW
350W (typ)
1.5pF
High
Impedance
C_INT
7pF (typ)
>1GW
VCM
1.5pF _RSW
350W (typ)
C_INT
7pF (typ)
High
A_IN-
Impedance
>1GW
Figure 1. Equivalent Analog Input Circuit
6
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