AMC1210_14 Datasheet, PDF (3/54 Pages) Texas Instruments – Quad Digital Filter for 2nd-Order Delta-Sigma Modulator

AMC1210
www.ti.com.............................................................................................................................................................. SBAS372D – APRIL 2006 – REVISED MAY 2009
ELECTRICAL CHARACTERISTICS
At –40°C to +125°C, AVDD, CVDD, DVDD = 5V, and BVDD = 2.7V, unless otherwise noted. The following condition must be
true on the supplies: CVDD ≥ DVDD ≥ BVDD.
AMC1210
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX UNIT
DIGITAL INPUT/OUTPUT
Logic levels:
CMOS
V_OH
BVDD = 2.7
2.4
V
BVDD = 5.0
4.44
V
V_OL
BVDD = 2.7
0.4
V
BVDD = 5.0
0.5
V
V_IH
V_IL
System clock frequency
Pin 'CLK'
0.7BVDD
0.3BVDD
90
V
V
MHz
Modulator clock frequency
Pins CLK1, CLK2, CLK3, CLK4
Mode = 0
22 MHz
SPI interface clock frequency
Pin WR, option 1
25 MHz
SPI interface clock frequency
Pin WR, option 2
40 MHz
Parallel interface read/write frequency
Pin CS
22 MHz
POWER-SUPPLY REQUIREMENTS
Power-supply voltage, pin AVDD
4.5
5.5
Power-supply voltage, pins CVDD and DVDD
CVDD ≥ DVDD ≥ BVDD
3.0
5.5
V
Power-supply voltage, pin BVDD
Total power⁽¹⁾
Power-supply current
Power-supply current
CVDD ≥ DVDD ≥ BVDD
All supplies = 5V
One filter module⁽²⁾
Four filter modules⁽²⁾
2.4
24.5
260
850
5.5
V
mW
µA/MHz
µA/MHz
SPI interface
Parallel interface⁽³⁾
78
µA/MHz
83
µA/MHz
Signal generator
140
µA/MHz
SIGNAL GENERATOR OUTPUT
V_OH
R_LOAD = 50Ω, bit HPE = 1
4.60
4.73
V
V_OL
R_LOAD = 50Ω, bit HPE = 1
0.26
0.4
V
V_OH
R_LOAD = 500Ω, bit HPE = 0
4.60
4.73
V
V_OL
R_LOAD = 500Ω, bit HPE = 0
0.26
0.4
V
(1) Power consumption with two filter modules functioning, both set to Sinc³, SOSR = 256.
(2) The filter module is configured with the comparator unit filter set to Sinc³, COSR = 32 and the sinc unit filter set to Sinc³ structure and
SOSR = 256.
(3) All three modes.
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