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ADS6445 Datasheet(PDF) 5 Page - STMicroelectronics

Part No. ADS6445
Description  QUAD CHANNEL, 14-BIT, 125/105/80/65 MSPS ADC WITH SERIAL LVDS OUTPUTS
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Maker  STMICROELECTRONICS [STMicroelectronics]
Homepage  http://www.st.com
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www.ti.com
ELECTRICAL CHARACTERISTICS
ADS6445, ADS6444
ADS6443, ADS6442
SLAS531 – MAY 2007
Typical values are at 25
°C, min and max values are across the full temperature range T
MIN = –40°C to TMAX = 85°C, AVDD =
LVDD = 3.3V, maximum rated sampling frequency, 50% clock duty cycle, –1dBFS differential analog input, internal reference
mode (unless otherwise noted).
PARAMETER
MIN
TYP
MAX
UNIT
RESOLUTION
14
Bits
ANALOG INPUT
Differential input voltage range
2.0
VPP
Differential input capacitance
7
pF
Analog input bandwidth
500
MHz
ADS6445
155
ADS6444
130
Analog input common mode current (per
µA
input pin of each ADC)
ADS6443
100
ADS6442
81
REFERENCE VOLTAGES
VREFB
Internal reference bottom voltage
1.0
V
VREFT
Internal reference top voltage
2.0
V
∆V
REF
Internal reference error (VREFT–VREFB)
-15
± 2
15
mV
VCM
Common mode output voltage
1.5
V
VCM output current capability
±4
mA
DC ACCURACY
No missing codes
Assured
EO
Offset error, across devices and across channels within a device
–15
±2
15
mV
Offset error temperature coefficient, across devices and across channels within a device
0.05
mV/
°C
There are two sources of gain error - internal reference inaccuracy and channel gain
error
EGREF
Gain error due to internal reference inaccuracy alone, (
∆V
REF /2.0) %
-0.75
0.1
0.75
% FS
Reference gain error temperature coefficient
0.0125
∆%/°C
EGCHAN Gain error of channel alone, across devices and across channels within a device(1)
–1
±0.3
1
% FS
Channel gain error temperature coefficient, across devices and across channels within a
0.005
∆%/°C
device
ADS6445 and ADS6444
–0.9
±0.6
2.0
DNL
Differential nonlinearity, Fin = 50 MHz
LSB
ADS6443 and ADS6442
–0.9
±0.5
1.8
ADS6445 and ADS6444
-5
±3
5
INL
Integral nonlinearity, Fin = 50 MHz
LSB
ADS6443 and ADS6442
4.5
±2
4.5
PSRR
DC power supply rejection ratio
0.5
mV/V
POWER SUPPLY
ADS6445
502
ADS6444
410
ICC
Total supply current
mA
ADS6443
360
ADS6442
320
ADS6445
410
ADS6444
322
IAVDD
Analog supply current
mA
ADS6443
280
ADS6442
245
ADS6445
92
ADS6444
88
ILVDD
LVDS supply current
mA
ADS6443
80
ADS6442
75
(1)
This is specified by design anad characterization; it is not tested in production.
5
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