Rainbow-electronics ADC12038 Manual do Utilizador Página 4
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Converter Electrical Characteristics (Continued)
The following specifications apply for V
a
e
V
A
a
e
V
D
a
ea
5.0 V
DC
,V
REF
a
ea
4.096 V
DC
,V
REF
b
e
0V
DC
, 12-bit
a
sign conversion mode, f
CK
e
f
SK
e
8 MHz for the ADC12H030, ADC12H032, ADC12H034 and ADC12H038, f
CK
e
f
SK
e
5 MHz for the ADC12030, ADC12032, ADC12034 and ADC12038, R
S
e
25X, source impedance for V
REF
a
and V
REF
b
s
25X, fully-differential input with fixed 2.048V common-mode voltage, and 10(t
CK
) acquisition time unless otherwise specified.
Boldface limits apply for T
A
e
T
J
e
T
MIN
to T
MAX
; all other limits T
A
e
T
J
e
25
§
C. (Notes 7, 8 and 9)
Symbol Parameter Conditions
(Note 10)
Typical
Limits
(Limits)
Units
(Note 11)
STATIC CONVERTER CHARACTERISTICS (Continued)
Negative Full-Scale Error 8-bit
a
sign mode (Note 12)
g
1/2 LSB (max)
Offset Error 8-bit
a
sign mode,
after Auto-Zero (Note 13)
g
1/2 LSB (max)
V
IN
(
a
)
e
V
IN
(
b
)
ea
2.048V
TUE Total Unadjusted Error 8-bit
a
sign mode
after Auto-Zero
g
3/4 LSB (max)
(Notes 12, 13 and 14)
Multiplexer Channel to Channel
g
0.05 LSB
Matching
Power Supply Sensitivity V
a
ea
5V
g
10%
V
REF
ea
4.096V
Offset Error
g
0.5
g
1 LSB (max)
a
Full-Scale Error
g
0.5
g
1.5 LSB (max)
b
Full-Scale Error
g
0.5
g
1.5 LSB (max)
a
Integral Linearity Error
g
0.5 LSB
b
Integral Linearity Error
g
0.5 LSB
Output Data from (Note 20)
a
10 LSB (max)
‘‘12-Bit Conversion of Offset’’
b
10 LSB (min)
(see Table V)
Output Data from (Note 20)
4095 LSB (max)
‘‘12-Bit Conversion of Full-Scale’’
4093 LSB (min)
(see Table V)
UNIPOLAR DYNAMIC CONVERTER CHARACTERISTICS
S/(N
a
D) Signal-to-Noise Plus f
IN
e
1 kHz, V
IN
e
5V
PP
,V
REF
a
e
5.0V 69.4 dB
Distortion Ratio f
IN
e
20 kHz, V
IN
e
5V
PP
,V
REF
a
e
5.0V 68.3 dB
f
IN
e
40 kHz, V
IN
e
5V
PP
,V
REF
a
e
5.0V 65.7 dB
b
3 dB Full Power Bandwidth V
IN
e
5V
PP
, where S/(N
a
D) drops 3 dB 31 kHz
DIFFERENTIAL DYNAMIC CONVERTER CHARACTERISTICS
S/(N
a
D) Signal-to-Noise Plus f
IN
e
1 kHz, V
IN
e
g
5V, V
REF
a
e
5.0V 77.0 dB
Distortion Ratio f
IN
e
20 kHz, V
IN
e
g
5V, V
REF
a
e
5.0V 73.9 dB
f
IN
e
40 kHz, V
IN
e
g
5V, V
REF
a
e
5.0V 67.0 dB
b
3 dB Full Power Bandwidth V
IN
e
g
5V, where S/(N
a
D) drops 3 dB 40 kHz
4
- General Description 1
- Applications 1
- Features 1
- Key Specifications 1
- Connection Diagrams 2
- Ordering Information 2
- Error 8-bit 4
- Electrical Characteristics 5
- AC Electrical Characteristics 7
- Figures 1b 9
- Figure 2 9
- (Continued) 10
- TL/H/11354– 14 12
- TL/H/11354– 15 13
- TL/H/11354– 16 13
- TL/H/11354– 17 14
- Test Circuits 15
- Timing Diagrams 15
- Timing Diagrams (Continued) 16
- Figure 3 22
- Figure 4 23
- High or Low state 24
- Tables (Continued) 25
- Application Hints 27
- Figure 5 28
- Figure 6 28
- Figure 7 29
- Figure 8 30
- Figure 9 30
- Figure 10 31
- Figure 11 31
- Figure 12 31
- Figure 13 31
- Application Hints (Continued) 32
- Figure 14 33
- Figure 15 33
- NS Package Number N24C 41
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