adc1204802 National Semiconductor Corporation, adc1204802 Datasheet - Page 6

• Manufacturer Part Number: adc1204802
• Description: 12-bit Plus Sign 216khz 8-channel Sampling Analog-to-digital Converter
• Manufacturer: National Semiconductor Corporation

www.national.com
I
I
I
R
C
C
C
I
I
I
Symbol
I
ON
OFF
ADCIN
D
A
ST
Symbol
REF
ON
MUX
ADC
MUXOUT
Symbol
Power Supply Characteristics
+
The following specifications apply to the ADC12048 for V
sion mode, f
common-mode voltage, and minimum acquisition time, unless otherwise specified. Boldface limits apply for T
to T
+
Analog MUX Inputs Characteristics
The following specifications apply to the ADC12048 for V
sion mode, f
common-mode voltage, and minimum acquisition time, unless otherwise specified. Boldface limits apply for T
to T
Reference Inputs
The following specifications apply to the ADC12048 for V
sion mode, f
common-mode voltage, and minimum acquisition time, unless otherwise specified. Boldface limits apply for T
to T
MAX
MAX
MAX
MUX ON Channel Leakage
Current
MUX OFF Channel Leakage
Current
ADCIN Input Leakage Current
MUX On Resistance
MUX Channel-to-Channel R
Matching
MUX Channel and COM Input
Capacitance
ADCIN Input Capacitance
MUX Output Capacitance
; all other limits T
; all other limits T
; all other limits T
V
V
Standby Supply Current
(I
Reference Input Current
D
D
A
+ Analog Supply Current
+ + I
CLK
+ Digital Supply Current
CLK
CLK
= 12.0 MHz, R
= 12.0 MHz, R
= 12.0 MHz, R
A
+)
Parameter
Parameter
Parameter
A
A
A
= T
= T
= T
J
J
J
S
S
S
= 25˚C
= 25˚C
= 25˚C
= 25Ω, source impedance for V
= 25Ω, source impedance for V
= 25Ω, source impedance for V
ON
Start Command (Performing a
conversion) with SYNC configured as an
input and driven with a 214 kHz signal.
Bus width set to 13.
f
f
Start Command (Performing a
conversion) with SYNC configured as an
input and driven with a 214 kHz signal.
Bus width set to 13.
f
f
Standby Mode
f
f
CLK
CLK
CLK
CLK
CLK
CLK
V
Analog Input Signal: 1 kHz
(Note 20)
REF
ON Channel = 5V, OFF Channel = 0V
ON Channel = 0V, OFF Channel = 5V
ON Channel = 5V, OFF Channel = 0V
ON Channel = 0V, OFF Channel = 5V
V
V
IN
IN
= 12.0 MHz, Reset Mode
= 12.0 MHz, Conversion
= 12.0 MHz, Reset Mode
= 12.0 MHz, Conversion
= Stopped
= 12.0 MHz
+ 4.096V, V
= 2.5V
= 2.5V
(Continued)
Conditions
Conditions
80 kHz
A
A
A
REF−
Conditions
+ = V
+ = V
+ = V
6
= 0V
D
D+
D
REF
REF
REF
+ = 5V, V
+ = 5V, V
= 5V, V
+ and V
+ and V
+ and V
REF
REF
REF
REF
REF
REF
+ = 4.096V, V
+ = 4.096V, V
+ = 4.096V, V
− ≤ 1Ω, fully differential input with fixed 2.048V
+ ≤ 1Ω, fully differential input with fixed 2.048V
− ≤ 1Ω, fully differential input with fixed 2.048V
(Note 10)
Typical
145
136
(Note 10)
Typical
(Note 10)
2.45
850
100
2.3
2.3
Typical
5
±
−0.05
−0.05
0.05
0.05
0.05
310
20%
10
70
20
REF
REF
REF
− = 0.0V, 12-Bit + sign conver-
− = 0.0V, 12-bit + sign conver-
− = 0.0V, 12-bit + sign conver-
(Note 11)
Limits
(Note 11)
(Note 11)
Limits
Limits
120
2.8
4.0
−1.0
−1.0
15
500
1.0
1.0
2.0
A
A
A
= T
= T
= T
mA (max)
mA (max)
µA (max)
µA (max)
µA (max)
µA (max)
µA (max)
J
J
J
µA (min)
µA (min)
Ω (max)
(Limit)
(Limit)
(Limit)
= T
= T
= T
Unit
Unit
Unit
mA
µA
µA
µA
pF
pF
pF
Ω
MIN
MIN
MIN