THS1041 Datasheet, PDF (5/37 Pages) Texas Instruments – 10-Bit, 40-MSPS ANALOG-TO-DIGITAL CONVERTER WITH PGA AND CLAMP

THS1041
SLAS289B – OCTOBER 2001 – REVISED FEBRUARY 2002
electrical characteristics over recommended operating conditions, AV_DD = 3 V, DV_DD = 3 V,
f_s = 40 MSPS/50% duty cycle, MODE = AV_DD (internal reference), differential input range = 1 Vpp
and 2 Vpp, PGA = 1X, T_A = T_min to T_max (unless otherwise noted) (continued)
power supply
PARAMETER
TEST CONDITIONS
MIN TYP MAX UNIT
AVDD
DVDD
ICC
PD
PD(STBY)
Supply voltage
Operating supply current
Power dissipation
Standby power
All circuits active, See Note 1
All circuits active
3
3 3.6
V
3
3 3.6
34
42 mA
103 125 mW
75
µW
NOTES:
Power up time for all references from standby, t(PU)
770
µs
Wake-up time, t(WU)
See Note 2
45
µs
1. Actual values will vary slightly depending on application clamp load, VREF load, etc.
2. Wake-up time is from the power-down state to accurate ADC samples being taken and is specified for MODE = AGND with external
reference sources applied to the device at the time of release of power-down and an applied 40-MHz clock. Circuits that need to
power up are the bandgap, bias generator, ADC, and SHPGA.
analog inputs
Differential analog input voltage, VI(AIN) = AIN+ – AIN–
Reference input voltage, VI(VREF)
Clamp input voltage, VI(CLAMPIN)
MIN
–1
0.5
0.1
NOM MAX
1
1
AVDD–0.1
UNIT
V
V
V
REFT, REFB external ADC reference voltages inputs (MODE = AGND)
PARAMETER
Reference input voltage, REFT–REFB
Reference common mode voltage, (REFT + REFB)/2
Input resistance between REFT and REFB
TEST CONDITIONS
AVDD = 3
MIN NOM MAX UNIT
0.5
1.5
1V
V
1.9
kΩ
REFT, REFB internal ADC reference voltages outputs (MODE = AV_DD or AV_DD/2)
PARAMETER
TEST CONDITIONS MIN
Reference voltage top, REFT
VREF = 0.5 V
VREF = 1 V
AVDD = 3 V
Refence voltage bottom, REFB
VREF = 0.5 V
VREF = 1 V
AVDD = 3 V
TYP MAX UNIT
1.75
V
2
1.25
V
1
VREF (on-chip voltage reference generator)
PARAMETER
Internal 0.5-V reference voltage (REFSENSE = VREF)
Internal 1-V reference voltage (REFSENSE = AGND)
External reference voltage (REFSENSE = AVDD)
Reference input resistance (REFSENSE = AVDD, MODE = AVDD/2 or AVDD)
MIN TYP MAX UNIT
0.45 0.5 0.55 V
0.95
1 1.05 V
0.5
1V
14
kΩ
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