MSC1200 Datasheet, PDF (4/60 Pages) Texas Instruments – Precision Analog-to-Digital Converter (ADC) and Digital-to-Analog Converter (DAC) with 8051 Microcontroller and Flash Memory

ELECTRICAL CHARACTERISTICS: AV_DD = 3V
All specifications from T_MIN to T_MAX, AV_DD = +3V, DV_DD = +2.7V to 5.25V, f_MOD = 15.625kHz, PGA = 1, Buffer ON, f_DATA = 10Hz, Bipolar, and V_REF ≡ (REF IN+) – (REF IN–) = +1.25V,
unless otherwise noted.
MSC1200Yx
PARAMETER
CONDITION
MIN
TYP
MAX
UNITS
ANALOG INPUT (AIN0-AIN7, AINCOM)
Analog Input Range
Full-Scale Input Voltage Range
Differential Input Impedance
Input Current
Bandwidth
Fast Settling Filter
Sinc² Filter
Sinc³ Filter
Programmable Gain Amplifier
Input Capacitance
Input Leakage Current
Burnout Current Sources
Buffer OFF
Buffer ON
(In+) – (In–)
Buffer OFF
Buffer ON
AGND – 0.1
AV_DD + 0.1
V
AGND + 50mV
AV_DD – 1.5
V
±V_REF/PGA
V
7/PGA
MΩ
0.5
nA
–3dB
–3dB
–3dB
User-Selectable Gain Ranges
Buffer On
Multiplexer Channel Off, T = +25°C
Buffer ON
0.469 • f_DATA
0.318 • f_DATA
0.262 • f_DATA
1
128
7
pF
0.5
pA
±2
µA
ADC OFFSET DAC
Offset DAC Range
Offset DAC Monotonicity
Offset DAC Gain Error
Offset DAC Gain Error Drift
±V_REF/(2 • PGA)
8
±1.5
0.6
V
Bits
% of Range
ppm/°C
SYSTEM PERFORMANCE
Resolution
ENOB
Output Noise
No Missing Codes
Integral Nonlinearity
Offset Error
Offset Drift⁽¹⁾
Gain Error⁽²⁾
Gain Error Drift⁽¹⁾
System Gain Calibration Range
System Offset Calibration Range
Common-Mode Rejection
Normal Mode Rejection
Power-Supply Rejection
VOLTAGE REFERENCE INPUTS
Reference Input Range
V_REF
Common-Mode Rejection
Input Current
ON-CHIP VOLTAGE REFERENCE
Output Voltage
Short-Circuit Current Source
Short-Circuit Current Sink
Short-Circuit Duration
Startup Time from Power ON
Temperature Sensor
Temperature Sensor Voltage
Temperature Sensor Coefficient
Sinc³ Filter
End Point Fit, Differential Input
After Calibration
Before Calibration
After Calibration
Before Calibration
At DC
f_CM = 60Hz, f_DATA = 10Hz
f_CM = 50Hz, f_DATA = 50Hz
f_CM = 60Hz, f_DATA = 60Hz
f_SIG = 50Hz, f_DATA = 50Hz
f_SIG = 60Hz, f_DATA = 60Hz
At DC, dB = –20log(DV_OUT/DV_DD)⁽³⁾
REF IN+, REF IN–
V_REF ≡ (REF IN+) – (REF IN–)
At DC
V_REF = 1.25V, PGA = 1
VREFH = 0 at +25°C
Sink or Source
T = +25°C
24
22
See Typical Characteristics
24
±0.0004
±0.0015
1.3
0.02
0.005
0.5
80
120
–50
50
100
130
130
120
120
100
100
88
Bits
Bits
Bits
%FSR
ppm of FS
ppm of FS/°C
%
ppm/°C
% of FS
% of FS
dB
dB
dB
dB
dB
dB
dB
AGND
AV_DD(2)
V
0.3
1.25
AV_DD
V
110
dB
0.5
µA
1.25
4
5
Indefinite
0.2
115
375
V
mA
µA
ms
mV
µV/°C
IDAC OUTPUT CHARACTERISTICS
Full-Scale Output Current
Maximum Short-Circuit Current Duration
Compliance Voltage
1
mA
Indefinite
AV_DD – 1.5
V
POWER-SUPPLY REQUIREMENTS
Power-Supply Voltage
Analog Current
AV_DD
2.7
3.0
3.6
V
Analog OFF, ALVD OFF, PDADC = PDIDAC = 1
<1
nA
ADC Current
I_ADC
PGA = 1, Buffer OFF
PGA = 128, Buffer OFF
150
µA
380
µA
PGA = 1, Buffer ON
200
µA
PGA = 128, Buffer ON
610
µA
V_REF Supply Current
I_DAC Supply Current
I_VREF
I_IDAC
ADC ON
IDAC = 00_H
330
µA
220
µA
NOTES: (1) Calibration can minimize these errors. (2) The gain calibration cannot have a REF IN+ of more than AV_DD – 1.5V with buffer ON. To calibrate gain,
turn buffer off. (3) DV_OUT is change in digital result.
4
MSC1200
www.ti.com
SBAS289E