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AMC7820
SBAS231B
www.ti.com
3
ELECTRICAL CHARACTERISTICS
(Cont.)
At
–
40
°
C to +85
°
C, AV
DD
, DV
DD
, BV
DD
= +5V, using external 2.5V reference, unless otherwise noted.
PARAMETER
CONDITION
MIN
TYP
MAX
UNITS
AMC7820
VOLTAGE REFERENCE (V
REF
)
Internal Reference Voltage
Internal Reference Drift
(5)
2.45
2.50
±
10
±
30
0.5
±
1
±
15
2.50
10
5
2.55
V
0
°
C to +85
°
C
–
40
°
C to +85
°
C
ppm/
°
C
ppm/
°
C
mA
mA
V
k
pF
2.5V Output Impedance (pin 26)
2.5V Output Current (pin 26)
Short-Circuit Current (pin 26)
External Reference Voltage Range (pin 27)
External Reference Input Resistance
External Reference Input Capacitance
2.45
2.55
OP AMP CHARACTERISTICS
(6)
Input Offset Voltage
vs Temperature
vs Power Supply
Input Bias Current
(7)
±
0.5
±
2
50
±
2
±
4
mV
μ
V/
°
C
μ
V/V
pA
T
A
= +25
°
C
T
A
=
–
40
°
C to +85
°
C
T
= +25
°
C
f = 0.1Hz to 10Hz
f = 1kHz
f = 1kHz
±
50
See Typical Characteristics
±
1
6
26
0.6
–
0.2
74
100
120
Input Offset Current
(7)
Input Voltage Noise
Input Voltage Noise Density
Current Noise Density
Common-Mode Voltage Range
Common-Mode Rejection Ratio
(8)
Open-Loop Gain
(8)
Gain-Bandwidth Product
Slew Rate
Settling Time: 0.1%
Voltage Output Swing from Rail
Closed-Loop Output Impedance
Output Current
Short-Circuit Current
±
50
pA
μ
Vp-p
nV/
√
Hz
fA/
√
Hz
V
dB
dB
MHz
V/
μ
s
μ
s
mV
mA
mA
AV
DD
–
1.2
–
0.2V < V
< AV
–
1.2V
R
L
= 25k
, 125mV < V
O
< AV
DD
–
125mV
G = 1
G = 1
2V Step, C
L
= 100pF, G = 1, R
L
= 10k
R
L
= 25k
90
3
1.2
3
40
0.4
±
1
±
18
See Typical Characteristics
DIGITAL INPUT/OUTPUT
Logic Level:
V
IH
V
IL
V
OH
V
Logic Level:
V
IH
V
IL
V
OH
V
Input Capacitance
BV
DD
= 5V, |I
IH
|
≤
10
μ
A
BV
DD
= 5V, |I
IL
|
≤
10
μ
A
BV
DD
= 5V, I
OH
=
–
3mA
BV
DD
= 5V, I
OL
= 3mA
3.5
0
4.0
0
BV
DD
+ 0.3
0.8
BV
DD
0.4
V
V
V
V
BV
DD
= 3V, |I
IH
|
≤
10
μ
A
BV
DD
= 3V, |I
IL
|
≤
10
μ
A
BV
DD
= 3V, I
OH
=
–
3mA
BV
DD
= 3V, I
OL
= 3mA
2.1
0
2.4
0
BV
DD
+ 0.3
0.6
BV
DD
0.4
V
V
V
V
pF
5
POWER-SUPPLY REQUIREMENTS
Power-Supply Voltage
AV
DD
, DV
DD
BV
Quiescent Current of AV
DD
Quiescent Current of DV
DD
Quiescent Current of BV
DD
Power Dissipation
Specified Performance
Specified Performance
4.75
2.7
5
5.25
5.25
12
0.75
0.1
V
V
8
mA
mA
mA
mW
0.3
0.01
40
TEMPERATURE RANGE
Specified Performance
Storage
–
40
–
65
+85
+150
°
C
°
C
NOTES: (1) For channels 2-5, fed into MUX directly. (2) LSB means Least Significant Bit. (3) DACs are tested without output load. (4) Measured from code 010
to FFF. (5) Internal reference voltage has been optimized for lowest drift from 0
°
C to +85
°
C. (6) Applies to all amplifiers; see Figure 2. (7) Offset current will double
for each 10
°
C of temperature increase. See Operational Amplifier section. (8) Ensured by design.