MSC1211 Datasheet, PDF (18/105 Pages) Texas Instruments – Precision Analog-to-Digital Converter (ADC) and Digital-to-Analog Converters (DACs) with 8051 Microcontroller and Flash Memory

MSC1211, MSC1212
MSC1213, MSC1214
SBAS323D − JUNE 2004 − REVISED SEPTEMBER 2005
www.ti.com
TYPICAL CHARACTERISTICS (Continued)
AV_DD = +5V, DV_DD = +5V, f_OSC = 8MHz, PGA = 1, f_MOD = 15.625kHz, Bipolar, filter = Sinc³, Buffer ON, and V_REF ≡ (REF IN+) − (REF IN−) = +2.5V, unless otherwise
specified.
ADC INTEGRAL NONLINEARITY
15
AV_DD = 5V
10
V_REF = 2.5V
Buffer ON
vs INPUT SIGNAL
+85_C
5
0
+25_C
+125_C
−5
−40_ C
−10
−15
−2.5 −2 −1.5 −1 −0.5 0 0.5 1 1.5 2 2.5
V_IN (V)
ADC INTEGRAL NONLINEARITY
vs INPUT SIGNAL
15
AV_DD = 5V
10
V_REF = 2.5V
Buffer OFF
+25_C
5
0
+85_ C
+125_ C
−5
−55_C
−10
−40_C
−15
−2.5 −2.0 −1.5 −1.0 −0.5 0 0.5 1.0 1.5 2.0 2.5
V_IN (V)
ADC INTEGRAL NONLINEARITY
vs INPUT SIGNAL
30
V_REF = AV_DD
Buffer OFF
20
10
0
−10
−20
−30
V_IN = −V_REF
0
V_IN (V)
V_IN = +V_REF
ADC INTEGRAL NONLINEARITY
vs V_REF
35
V_IN = V_REF
30 Buffer OFF
AV_DD = 3V
25
20
AV_DD = 5V
15
10
5
0
0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5
V_REF (V)
ANALOG SUPPLY CURRENT
vs ANALOG SUPPLY VOLTAGE
2.6
PGA = 128, ADC ON,
2.5 _{Brownout Detect ON,}
2.4 ^{All VDACs ON = FFFFh,}
2.3 ^{VDACs REF = AVDD}
+125_C
+85_ C
2.2
+25_C
2.1
2.0
−40_C
1.9
1.8
1.7
1.6
1.5
2.5
3.0
3.5
4.0
4.5
5.0
5.5
Analog Supply Voltage (V)
ADC CURRENT vs PGA
900
AV_DD = 5V, Buffer = ON
800
Buffer = OFF
700
600
500
AV_DD = 3V, Buffer = ON
400
Buffer = OFF
300
200
100
0
0
1
2
4
8 16 32 64 128
PGA Setting
18