Datasheet


SLAS400B − SEPTEMBER 2003 − REVISED NOVEMBER 2005
www.ti.com
3
SPECIFICATIONS
T
A
= −40°C to 85°C, +VA = 5 V, +VBD = 5 V or 3.3 V, V
ref
= 2.5 V, f
sample
= 4 MHz (unless otherwise noted)
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
ANALOG INPUT
Full-scale input span
(1)
+IN – (−IN) 0 V
ref
V
Absolute input range
+IN −0.2 V
ref
+ 0.2
V
Absolute input range
−IN −0.2 +0.2
V
Input capacitance 27 pF
Input leakage current 500 pA
SYSTEM PERFORMANCE
Resolution 12 Bits
No missing codes 12 Bits
Integral linearity
(2)
−1 ±0.6 1 LSB
(3)
Differential linearity −1 ±0.6 1 LSB
(3)
Offset error
(4)
External reference −1.5 ±0.25 1.5 mV
Gain error
(4)
External reference −2 ±0.75 2 mV
Common-mode rejection ratio
With common mode input signal = 200
mVp−p at 1 MHz
60 dB
Power supply rejection
At FF0
H
output code,
+VA = 4.75 V to 5.25 V , Vref = 2.50 V
80 dB
SAMPLING DYNAMICS
Conversion time
+VDB = 5 V 185 200 nsec
Conversion time
+VDB = 3 V 205 nsec
Acquisition time
+VDB = 5 V 50 65 nsec
Acquisition time
+VDB = 3 V 45 nsec
Maximum throughput rate 4 MHz
Aperture delay 2 nsec
Aperture jitter 20 psec
Step response 50 nsec
Over voltage recovery 50 nsec
DYNAMIC CHARACTERISTICS
(5)
V
IN
= 2.496 Vp−p at 100 kHz/2.5 Vref −91
Total harmonic distortion
(5)
V
IN
= 2.496 Vp−p at 1 MHz/2.5 Vref −88.5 −86
dB
Total harmonic distortion
(5)
V
IN
= 2.496 Vp−p at 1.8 MHz/2.5 Vref 74
dB
V
IN
= 2.496 Vp−p at 100 kHz/2.5 Vref 71.5
SNR
V
IN
= 2.496 Vp−p at 1 MHz/2.5 Vref 69 71
dB
SNR
V
IN
= 2.496 Vp−p at 1.8 MHz/2.5 Vref 69.7
dB
V
IN
= 2.496 Vp−p at 100 kHz/2.5 Vref 71.5
SINAD
V
IN
= 2.496 Vp−p at 1 MHz/2.5 Vref 69 71
dB
SINAD
V
IN
= 2.496 Vp−p at 1.8 MHz/2.5 Vref 68.3
dB
SFDR V
IN
= 2.496 Vp−p at 1 MHz/2.5 Vref 90 dB
−3 dB Small signal bandwidth 50 MHz
EXTERNAL REFERENCE INPUT
Input V
REF
range 2.4 2.5 2.6 V
Resistance
(6)
To internal reference voltage 500 kΩ