Datasheet

AD7846
Rev. G | Page 3 of 24
SPECIFICATIONS
V
DD
= +14.25 V to +15.75 V; V
SS
= −14.25 V to –15.75 V; V
CC
= +4.75 V to +5.25 V. V
OUT
loaded with 2 kΩ, 1000 pF to 0 V; V
REF+
= +5 V;
R
IN
connected to 0 V. All specifications T
MIN
to T
MAX
, unless otherwise noted.
Table 1.
Parameter
1
J, A Versions K, B Versions Unit Test Conditions/Comments
RESOLUTION 16 16 Bits
UNIPOLAR OUTPUT V
REF−
= 0 V, V
OUT
= 0 V to +10 V
Relative Accuracy at +25°C ±12 ±4 LSB typ 1 LSB = 153 V
T
MIN
to T
MAX
±16 ±8 LSB max
Differential Nonlinearity Error ±1 ±0.5 LSB max All grades guaranteed monotonic
Gain Error at +25°C ±12 ±6 LSB typ V
OUT
load = 10 MΩ
T
MIN
to T
MAX
±16 ±16 LSB max
Offset Error at +25°C ±12 ±6 LSB typ
T
MIN
to T
MAX
±16 ±16 LSB max
Gain TC
2
±1 ±1 ppm FSR/°C typ
Offset TC
2
±1 ±1 ppm FSR/°C typ
BIPOLAR OUTPUT V
REF−
= –5 V, V
OUT
= −10 V to +10 V
Relative Accuracy at +25°C ±6 ±2 LSB typ 1 LSB = 305 V
T
MIN
to T
MAX
±8 ±4 LSB max
Differential Nonlinearity Error ±1 ±0.5 LSB max All grades guaranteed monotonic
Gain Error at +25°C ±6 ±4 LSB typ V
OUT
load = 10 MΩ
T
MIN
to T
MAX
±16 ±16 LSB max
Offset Error at +25°C ±6 ±4 LSB typ V
OUT
load = 10 MΩ
T
MIN
to T
MAX
±16 ±12 LSB max
Bipolar Zero Error at +25°C ±6 ±4 LSB typ
T
MIN
to T
MAX
±12 ±8 LSB max
Gain TC
2
±1 ±1 ppm FSR/°Ctyp
Offset TC
2
±1 ±1 ppm FSR/°Ctyp
Bipolar Zero TC
2
±1 ±1 ppm FSR/°Ctyp
REFERENCE INPUT
Input Resistance 20 20 kΩ min Resistance from V
REF+
to V
REF−
40 40 kΩ max Typically 30 kΩ
V
REF+
Range V
SS
+ 6 to V
SS
+ 6 to V min to
V
DD
− 6 V
DD
− 6 V max
V
REF−
Range V
SS
+ 6 to V
SS
+ 6 to V min to
V
DD
− 6 V
DD
− 6 V max
OUTPUT CHARACTERISTICS
Output Voltage Swing
V
SS
+ 4 to V
SS
+ 4 to
V max
V
DD
− 3 V
DD
− 3
Resistive Load 2 2 kΩ min To 0 V
Capacitive Load 1000 1000 pF max To 0 V
Output Resistance 0.3 0.3 Ω typ
Short Circuit Current ±25 ±25 mA typ To 0 V or any power supply
DIGITAL INPUTS
V
IH
(Input High Voltage) 2.4 2.4 V min
V
IL
(Input Low Voltage) 0.8 0.8 V max
I
IN
(Input Current) ±10 ±10 A max
C
IN
(Input Capacitance)
2
10 10 pF max