Datasheet

ADC10731, ADC10732, ADC10734, ADC10738
SNAS081D –MAY 1999–REVISED MARCH 2013 www.ti.com
Electrical Characteristics (continued)
The following specifications apply for V
+
= AV
+
= DV
+
= +5.0 V
DC
, V
REF
+ = 2.5 V
DC
, V
REF
− = GND, V
IN
− = 2.5V for Signed
Characteristics, V
IN
− = GND for Unsigned Characteristics and f
CLK
= 2.5 MHz unless otherwise specified. Boldface limits
apply for T
A
= T
J
= T
MIN
to T
MAX
; all other limits T
A
= T
J
= +25°C.
(1)(2)(3)(4)
Units
Parameter Test Conditions Typ
(5)
Limits
(6)
(Limits)
DYNAMIC UNSIGNED CONVERTER CHARACTERISTIC
V
REF
+ = 4.096V,
S/(N+D) Signal-to-Noise Plus Distortion Ratio V
IN
= 4.0 V
PP
, and 60 dB
f
IN
=1 kHz to 15 kHz
V
REF
+ = 4.096V,
ENOB Effective Bits V
IN
= 4.0 V
PP
, and 9.8 Bits
f
IN
= 1 kHz to 15 kHz
V
REF
+ = 4.096V,
THD Total Harmonic Distortion V
IN
= 4.0 V
PP
, and −70 dB
f
IN
= 1 kHz to 15 kHz
V
REF
+ = 4.096V,
IMD Intermodulation Distortion V
IN
= 4.0 V
PP
, and −73 dB
f
IN
= 1 kHz to 15 kHz
V
IN
= 4.0 V
PP
,
V
REF
+ = 4.096V,
Full-Power Bandwidth 380 kHz
where S/(N+D) decreases
3 dB
f
IN
= 15 kHz,
Multiplexer Chan to Chan Crosstalk −80 dB
V
REF
+ = 4.096V
REFERENCE INPUT AND MULTIPLEXER CHARACTERISTICS
7 kΩ
Reference Input Resistance 5.0 kΩ(min)
9.5 kΩ(max)
C
REF
Reference Input Capacitance 70 pF
−50 mV (min)
MUX Input Voltage
AV
+
+ 50mV (max)
C
IM
MUX Input Capacitance 47 pF
On Channel = 5V and
−0.4 −3.0 μA (max)
Off Channel = 0V
Off Channel Leakage Current
(9)
On Channel = 0V and
0.4 3.0 μA (max)
Off Channel = 5V
On Channel = 5V and
0.4 3.0 μA (max)
Off Channel = 0V
On Channel Leakage Current
(9)
On Channel = 0V and
−0.4 −3.0 μA (max)
Off Channel = 5V
REFERENCE CHARACTERISTICS
V
REF
Out Reference Output Voltage 2.5V ±0.5% 2.5V ±2% V (max)
ΔV
REF
/Δ V
REF
Out Temperature Coefficient
±40 ppm/°C
T
ΔV
REF
/ΔI %/mA
Load Regulation, Sourcing 0 mA ≤ I
L
≤ +4 mA ±0.003 ±0.05
L
(max)
ΔV
REF
/ΔI %/mA
Load Regulation, Sinking 0 mA ≤ I
L
≤ −1 mA ±0.2 ±0.6
L
(max)
Line Regulation 5V ±10% ±0.3 ±2.5 mV (max)
I
SC
Short Circuit Current V
REF
Out = 0V 13 22 mA (max)
10 Hz to 10 kHz,
Noise Voltage 5 μV
C
L
= 100 μF
ΔV
REF
/Δt Long-term Stability ±120 ppm/kHr
t
SU
Start-Up Time C
L
= 100 μF 100 ms
(9) Channel leakage current is measured after the channel selection.
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