SPECIFICATIONS
AD7390/AD7391
AD7391 ELECTRICAL CHARACTERISTICS (@ VREF IN = 2.5 V, ؊40؇C < TA < ؉85؇C, unless otherwise noted)
Parameter
Symbol Conditions
3 V ؎ 10% 5 V ؎ 10% Units
STATIC PERFORMANCE
Resolution1
Relative Accuracy2
Relative Accuracy2
Differential Nonlinearity2
Zero-Scale Error
Full-Scale Voltage Error
Full-Scale Voltage Error
Full-Scale Tempco3
N
INL
INL
DNL
VZSE
VFSE
VFSE
TCVFS
TA = ϩ25°C
TA = Ϫ40°C, ϩ85°C, ϩ125°C
Monotonic
Data = 000H
TA = ϩ25°C, ϩ85°C, ϩ125°C,
Data = 3FFH
TA = Ϫ40°C, Data = 3FFH
10
Ϯ1.75
Ϯ2.0
Ϯ0.9
9.0
Ϯ32
Ϯ35
16
REFERENCE INPUT
VREF IN Range
Input Resistance
Input Capacitance3
VREF
RREF
CREF
0/VDD
2.5
5
ANALOG OUTPUT
Output Current (Source)
Output Current (Sink)
Capacitive Load3
IOUT
IOUT
CL
Data = 800H, ∆VOUT = 5 LSB
1
Data = 800H, ∆VOUT = 5 LSB
3
No Oscillation
100
LOGIC INPUTS
Logic Input Low Voltage
Logic Input High Voltage
Input Leakage Current
Input Capacitance3
INTERFACE TIMING3, 5
Clock Width High
Clock Width Low
Load Pulse Width
Data Setup
Data Hold
Clear Pulse Width
Load Setup
Load Hold
VIL
VIH
IIL
CIL
tCH
tCL
tLDW
tDS
tDH
tCLRW
tLD1
tLD2
0.5
VDDϪ0.6
10
10
50
50
30
10
30
15
30
40
AC CHARACTERISTICS6
Output Slew Rate
Settling Time
DAC Glitch
Digital Feedthrough
Feedthrough
SR
Data = 000H to 3FFH to 000H
0.05
tS
To Ϯ0.1% of Full Scale
70
Q
Code 7FFH to 800H to 7FFH
65
Q
15
VOUT/VREF VREF = 1.5 VDC ϩ1 V p-p,
Ϫ63
Data = 000H, f = 100 kHz
SUPPLY CHARACTERISTICS
Power Supply Range
Positive Supply Current
Positive Supply Current
Power Dissipation
Power Supply Sensitivity
VDD RANGE
IDD
IDD
PDISS
PSS
DNL < Ϯ1 LSB
VIL = 0 V, No Load, TA = ϩ25°C
VIL = 0 V, No Load
VIL = 0 V, No Load
∆VDD = Ϯ5%
2.7/5.5
55
100
300
0.003
NOTES
1One LSB = VREF/1024 V for the 10-bit AD7391.
2The first two codes (000H, 001H) are excluded from the linearity error measurement.
3These parameters are guaranteed by design and not subject to production testing.
4Typicals represent average readings measured at 25°C.
5All input control signals are specified with tR = tF = 2 ns (10% to 90% of ϩ3 V) and timed from a voltage level of 1.6 V.
6The settling time specification does not apply for negative going transitions within the last 3 LSBs of ground.
Specifications subject to change without notice.
10
Ϯ1.75
Ϯ2.0
Ϯ0.9
9.0
Ϯ32
Ϯ35
16
0/VDD
2.5
5
1
3
100
0.8
VDDϪ0.6
10
10
30
30
20
10
15
15
15
20
0.05
60
65
15
Ϫ63
2.7/5.5
55
100
500
0.006
Bits
LSB max
LSB max
LSB max
mV max
mV max
mV max
ppm/°C typ
V min/max
MΩ typ4
pF typ
mA typ
mA typ
pF typ
V min
V max
µA max
pF max
ns
ns
ns
ns
ns
ns
ns
ns
V/µs typ
µs typ
nVs typ
nVs typ
dB typ
V min/max
µA typ
µA max
µW max
%/% max
REV. 0
–3–