MSC1202Y3RHHTG4 Datasheet, PDF (16/92 Pages) Texas Instruments –
Precision Analog-to-Digital Converter and Current-Output Digital-to-Analog Converter

MSC1200
MSC1201
MSC1202
SBAS317E − APRIL 2004 − REVISED MAY 2006
www.ti.com
TYPICAL CHARACTERISTICS: ALL DEVICES (Continued)
AVDD = +5V, DVDD = +5V, fOSC = 8MHz, PGA = 1, fMOD = 15.625kHz, ADC Bipolar Mode, Buffer ON, and VREF ≡ (REF IN+) − (REF IN−) = +2.5V, unless
otherwise specified.
ANALOG SUPPLY CURRENT
vs ANALOG SUPPLY VOLTAGE
1.4
PGA = 128
1.3 ^{DVDD = AVDD}
V_REF = 1.25V
+125_ C
+85_ C
1.2
+25_ C
1.1
−40_C
1.0
−55_C
0.9
0.8
0.7
2.5
3.0
3.5
4.0
4.5
5.0
5.5
Analog Supply Voltage (V)
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
1
ADC POWER−SUPPLY CURRENT
vs PGA
AV_DD = 5V, Buffer = ON
AV_DD = 3V, Buffer = ON
AV_DD = 5V, Buffer = OFF
AV_DD = 3V, Buffer = OFF
2
4
8
16
32
64 128
PGA Setting
ADC OFFSET DAC:
OFFSET vs TEMPERATURE
14
12
10
8
6
4
2
0
−2
−4
−6
−8
− 10
− 12
− 14
− 16
−60 −40 − 20 0 +20 +40 +60 +80 +100 +120 +140
Temperature (_C)
1.00008
ADC OFFSET DAC:
GAIN vs TEMPERATURE
1.00006
1.00004
1.00002
1
0.99998
0.99996
0.99994
0.99992
− 60 −40 −20
0 +20 +40 +60 +80 +100 +120 +140
Temperature (_C)
DIGITAL SUPPLY CURRENT
vs EXTERNAL CLOCK FREQUENCY
100
DV_DD = 5V
DV_DD = 3V
Normal Mode
Normal Mode
DV_DD = 5V
Idle Mode
10
1
0.1
1
DV_DD = 3V
Idle Mode
10
100
Clock Frequency (MHz)
DIGITAL SUPPLY CURRENT vs CLOCK DIVIDER
100
Divider Values
1
2
10
4
8
16
32
1
1024
0.1
1
10
100
Clock Frequency (MHz)
16