THS1031
3-V TO 5.5-V, 10-BIT, 30 MSPS
CMOS ANALOG-TO-DIGITAL CONVERTER
SLAS242E – NOVEMBER 1999 – REVISED MARCH 2002
5
POST OFFICE BOX 655303
•
DALLAS, TEXAS 75265
electrical characteristics over recommended operating conditions, AV
DD
= 3 V, DV
DD
= 3 V,
f
s
= 30 MSPS/50% duty cycle, MODE = AV
DD
, 2-V input span from 0.5 V to 2.5 V, external reference,
PGA = 1X, T
A
= T
min
to T
max
(unless otherwise noted)
analog inputs
PARAMETER
MIN
TYP
MAX
UNIT
VI(AIN)
Analog input voltage
REFBS
REFTS
V
CI
Switched sampling input capacitance
1.2
pF
BW
Full power bandwidth (– 3 dB)
150
MHz
Ilkg
DC leakage current (input =
±
FS)
100
µ
A
VREF reference voltages
PARAMETER
MIN
TYP
MAX
UNIT
Internal 1-V reference voltage (REFSENSE = VREF)
0.95
1
1.05
V
Internal 2-V reference voltage (REFSENSE = AVSS)
1.90
2
2.10
V
External reference voltage (REFSENSE = AVDD)
1
2
V
Reference input resistance (REFSENSE = AVDD, MODE = AVDD/2)
18
k
Ω
REFTF, REFBF reference voltages
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
Differential input voltage (REFTF – REFBF)
1
2
V
Input common mode voltage (REFTF + REFBF)/2
AVDD = 3 V
1.3
1.5
1.7
V
Input common mode voltage (REFTF + REFBF)/2
AVDD = 5 V
2
2.5
3
V
VREF = 1 V
AVDD = 3 V
2
V
REFTF voltage (MODE = AVDD)
VREF = 1 V
AVDD = 5 V
3
V
REFTF voltage (MODE = AVDD)
VREF = 2 V
AVDD = 3 V
2.5
V
VREF = 2 V
AVDD = 5 V
3.5
V
VREF = 1 V
AVDD = 3 V
1
V
REFBF voltage (MODE = AVDD)
VREF = 1 V
AVDD = 5 V
2
V
REFBF voltage (MODE = AVDD)
VREF = 2 V
AVDD = 3 V
0.5
V
VREF = 2 V
AVDD = 5 V
1.5
V
Input resistance between REFTF and REFBF
680
Ω
