Datasheet

Data Sheet AD7327
Rev. B | Page 5 of 36
B Version
Parameter
1
Min Typ Max Unit Test Conditions/Comments
DC Leakage Current ±80 nA V
IN
= V
DD
or V
SS
3 nA Per input channel, V
IN
= V
DD
or V
SS
Input Capacitance
3
13.5 pF When in track, ±10 V range
16.5 pF When in track, ±5 V and 0 V to +10 V ranges
21.5 pF When in track, ±2.5 V range
3 pF When in hold, all ranges
REFERENCE INPUT/OUTPUT
Input Voltage Range 2.5 3 V
Input DC Leakage Current ±1 µA
Input Capacitance 10 pF
Reference Output Voltage 2.5 V
Reference Output Voltage Error
at 25°C
±5
mV
Reference Output Voltage
T
MIN
to T
MAX
±10 mV
Reference Temperature
Coefficient
25 ppm/°C
3 ppm/°C
Reference Output Impedance 7 Ω
LOGIC INPUTS
Input High Voltage, V
INH
2.4 V
Input Low Voltage, V
INL
0.8 V V
CC
= 4.75 V to 5.25 V
0.4 V V
CC
= 2.7 to 3.6 V
Input Current, I
IN
±1 µA V
IN
= 0 V or V
DRIVE
Input Capacitance, C
IN
3
10 pF
LOGIC OUTPUTS
Output High Voltage, V
OH
V
DRIVE
−
0.2 V
V I
SOURCE
= 200 µA
Output Low Voltage, V
OL
0.4
V
I
SINK
= 200 µA
Floating-State Leakage Current ±1 µA
Floating-State Output
Capacitance
3
5 pF
Output Coding Straight natural binary Coding bit set to 1 in control register
Twos complement Coding bit set to 0 in control register
CONVERSION RATE
Conversion Time 1.6 µs 16 SCLK cycles with SCLK = 10 MHz
Track-and-Hold Acquisition
Time
2, 3
305
ns
Full-scale step input; see the Terminology section
Throughput Rate 500 kSPS See the Serial Interface section
POWER REQUIREMENTS
Digital inputs = 0 V or V
DRIVE
V
DD
12 16.5 V See Table 6
V
SS
−12 −16.5 V See Table 6
V
CC
2.7 5.25 V See Table 6
V
DRIVE
2.7 5.25 V
Normal Mode (Static) 0.9 mA V
DD
/V
SS
= ±16.5 V, V
CC
/V
DRIVE
= 5.25 V
Normal Mode (Operational) f
SAMPLE
= 500 kSPS
I
DD
180 µA V
DD
= 16.5 V
I
SS
205 µA V
SS
= −16.5 V
I
CC
and I
DRIVE
2.2 mA V
CC
/V
DRIVE
= 5.25 V
Autostandby Mode (Dynamic) f
SAMPLE
= 250 kSPS
I
DD
100
µA
V
DD
= 16.5 V
I
SS
110 µA V
SS
= −16.5 V
I
CC
and I
DRIVE
0.75 mA V
CC
/V
DRIVE
= 5.25 V