ABSOLUTE MAXIMUM RATINGS (Beyond which damage may occur)
1
25
°
C
Supply Voltages
V
DD1 ....................................................................
–0.5 V to +6 V
V
DD2 ....................................................................
–0.5 V to +6 V
V
DD3 ....................................................................
–0.5 V to +6 V
Input Voltages
Analog Input ................................. –0.5 V to (V
DD
+0.5 V)
Digital Input .................................. –0.5 V to (V
DD
+0.5 V)
V
REF
+ .......................................... –0.5 V to (V
DD
+0.5 V)
V
REF
– .......................................... –0.5 V to (V
DD
+0.5 V)
CLK .............................................. –0.5 V to (V
DD
+0.5 V)
Temperature
Operating Temperature ............................. –40 to +85
°C
Storage Temperature ............................... –65 to +125
°C
Note:
1. Operation at any Absolute Maximum Rating is not
implied. See Electrical Specifications for proper
nominal applied conditions in typical applications.
ELECTRICAL SPECIFICATIONS
T
A
=T
MIN
–T
MAX
, V
DD1
=V
DD2
=V
DD3
=
3.3 V, V
REF
–=1.0 V, V
REF
+=2.0 V, Common Mode Voltage=1.65 V, ƒ
CLK
=20 MSPS, Bias 1=90
µA,
Bias 2=9.5
µA,
Differential Input, Duty Cycle=50%, unless otherwise specified.
PARAMETERS
DC Accuracy
Resolution
Differential Linearity
Integral Linearity
No Missing Codes
Analog Input
Input Voltage Range (Differential)
Common Mode Input Voltage
Input Capacitance
Input Bandwidth (Large Signal)
Offset (Mid-scale)
Gain Error
Reference Voltages
Reference Input Voltage Range
(V
REF
+ – V
REF
–)
Negative Reference Voltage (V
REF
–)
Positive Reference Voltage (V
REF
+)
Common Mode Output Voltage (V
CM
)
V
REF
+ Current
V
REF
– Current
Switching Performance
Maximum Conversion Rate
Pipeline Delay
(See Timing Diagram)
Aperture Delay Time (T
AP
)
Aperture Jitter Time
Dynamic Performance
Effective Number of Bits
ƒ
IN
= 5.0 MHz
ƒ
IN
= 10.0 MHz
Signal-To-Noise Ratio
ƒ
IN
= 5.0 MHz
ƒ
IN
= 10.0 MHz
Total Harmonic Distortion
ƒ
IN
= 5.0 MHz
ƒ
IN
= 10.0 MHz
TEST
CONDITIONS
TEST
LEVEL
MIN
SPT7935
TYP
12
±0.6
±3.0
Guaranteed
±0.6
1.2
±1.0
1.65
1.4
120
±1.0
0.3
1.0
1.0
2.0
1.65
35
–25
±1.7
1.9
MAX
UNITS
Bits
LSB
LSB
V
V
VI
IV
IV
V
V
V
V
IV
IV
IV
VI
V
V
VI
IV
V
V
V
IN
+=V
IN
–=V
CM
V
V
pF
MHz
% FSR
% FSR
V
V
V
V
µA
µA
MHz
Clocks
ns
ps-rms
0.6
0.9
1.9
1.3
1.7
1.3
2.6
1.8
I
O
= –1
µA
20
7.5
5
10
VI
V
VI
V
VI
V
9.2
9.8
9.0
62
58
–68
–60
–61
Bits
Bits
dB
dB
dB
dB
59
SPT7935
2
7/12/00
CADEKA [ CADEKA MICROCIRCUITS LLC. ]
