ABSOLUTE MAXIMUM RATINGS (Beyond which damage may occur)
1
25
°
C
Supply Voltages
V
DD1 ...................................................................
- 0.3 V to +6 V
V
DD2 ...................................................................
- 0.3 V to +6 V
Input Voltages
Analog In ....................................... - 0.3 V to V
DD
+ 0.3 V
Digital In ........................................ - 0.3 V to V
DD
+ 0.3 V
REF
P ....................................................
- 0.3 V to V
DD
+ 0.3 V
REF
N ....................................................
- 0.3 V to V
DD
+ 0.3 V
CLOCK.......................................... - 0.3 V to V
DD
+ 0.3 V
Note:
1. Operation at any Absolute Maximum Rating is not implied. See Electrical Specifications for proper nominal
applied conditions in typical applications.
Temperatures
Operating Temperature ................................. 0 to +70
°C
Storage Temperature.. ............................. - 65 to +125
°C
ELECTRICAL SPECIFICATIONS
T
A
= T
MIN
-T
MAX
, V
DD1
=V
DD2
= 3.3 V, Sampling Rate = 28 MSPS, Differential input signal, 50% duty cycle clock with 2.5 ns rise and fall times, unless otherwise
specified.
PARAMETERS
DC Accuracy
Differential Nonlinearity (DNL)
Integral Nonlinearity
Common Mode Rejection Ratio (CMRR)
No Missing Codes
Analog Input
Input Voltage Range (differential) VFSR
Common Mode Input Voltage VCMI
Input Capacitance C
IN
(From Each Input to Ground)
Midscale Offset V
OS
Gain Error
Input Bandwidth
Reference Voltages
Internal Reference Voltage on Pin 10 (V
REFNI
)
Internal Reference Voltage on Pin 11 (V
REFPI
)
Internal Reference Voltage Drift
Negative Input Voltage (V
REF
-)
Positive Input Voltage (V
REF
+)
Reference Input Voltage Range (V
REF
+ — V
REF
-)
Common Mode Output Voltage (V
CM
)
Bandgap Output Voltage (V
BGAP
)
Dynamic Performance
Effective Number of Bits
Signal to Noise and Distortion Ratio (SINAD)
Signal to Noise Ratio (SNR)
Without Harmonics
Total Harmonic Distortion (THD)
TEST
CONDITIONS
TEST
LEVEL
VI
VI
V
SPT7936
MIN
TYP
±0.5
±1.3
54
Guaranteed
0.6
1.2
±1
1.5
2
±2
-0.2
150
0.95
1.95
0.9
1.9
0.6
1.45
2.365
1.0
2.0
1.0
2.0
1.0
1.50
2.415
MAX
±1.0
±3.0
UNITS
LSB
LSB
dB
IV
IV
V
V
IN
+=V
IN
–=V
CM
Large Signal
V
V
V
VI
VI
IV
VI
VI
IV
VI
VI
±1.2
1.6
V
V
pF
%
%
MHz
1.05
2.05
100
1.3
2.3
1.2
1.55
2.465
V
V
ppm/°C
V
V
V
V
V
f
IN
= 5.0 MHz
f
IN
= 10.0 MHz
f
IN
= 5.0 MHz
f
IN
= 10.0 MHz
f
IN
= 5.0 MHz
f
IN
= 10.0 MHz
f
IN
= 5.0 MHz
f
IN
= 10.0 MHz
V
VI
V
VI
V
VI
V
VI
9.2
57
59
10.0
9.7
62
60
64
63
–66
–64
–61
Bits
Bits
dB
dB
dB
dB
dB
dB
SPT7936
2
8/1/00
CADEKA [ CADEKA MICROCIRCUITS LLC. ]
