ADS774H Datasheet, PDF (4/23 Pages) Texas Instruments – Microprocessor-Compatible Sampling CMOS ANALOG-TO-DIGITAL CONVERTER

ADS774H
SBAS443 – AUGUST 2009 ................................................................................................................................................................................................ www.ti.com
ELECTRICAL CHARACTERISTICS (continued)
All specifications at T_A = T_MIN to T_MAX, V_DD = +5V, V_EE = –15V to +5V, sampling frequency of 117kHz, and f_IN = 10kHz, unless otherwise
noted.
ADS774HI
ADS774HIB ⁽¹⁾
PARAMETER
CONDITIONS
MIN
TYP
MAX
MIN
TYP
MAX UNIT
SAMPLING DYNAMICS
Sampling rate
Aperture delay, t_AP
Aperture uncertainty (jitter)
Settling time to 0.01% for
full-scale input change
At +25°C
T_MIN to T_MAX
with V_EE = +5V
with V_EE = 0V to –15V
with V_EE = +5V
with V_EE = 0V to –15V
125
117
20
1.6
300
10
1.4
125
117
20
1.6
300
10
1.4
kHz
kHz
ns
µs
ps RMS
ns RMS
µs
DIGITAL OUTPUTS (DB₁₁ to DB₀, STATUS)
Output codes
Unipolar
Bipolar
Unipolar straight binary (USB)
Bipolar offset binary (BOB)
Unipolar straight binary (USB)
Bipolar offset binary (BOB)
Logic levels
Leakage, data bits only, high-Z
state
Logic 0 (I_SINK = 1.6mA)
Logic 1 (I_SOURCE = 500µA)
+0.4
+0.4
V
+2.4
+2.4
V
–5
0.1
+5
–5
0.1
+5
µA
Capacitance
5
5
pF
INTERNAL REFERENCE VOLTAGE
Voltage
+2.4
+2.5
+2.6
+2.4
+2.5
+2.6
V
Source current available for
external loads
0.5
0.5
mA
POWER-SUPPLY REQUIREMENTS
Voltage
Current
V_EE ⁽⁸⁾
V_DD
I_EE ⁽⁸⁾
I_DD
V_EE = –15V
Power dissipation, t_MIN to t_MAX
V_EE = 0V to +5V
TEMPERATURE RANGE
–16.5
+4.5
V_DD
+5.5
–16.5
+4.5
–1
+15
+24
75
120
V_DD
V
+5.5
V
–1
mA
+15
+24 mA
75
120 mW
Specified
–40
+85
–40
+85
°C
Operating
–40
+85
–40
+85
°C
Storage
–65
+150
–65
+150
°C
(8) V_EE is optional, and is only used to set the mode for the internal sample/hold. When V_EE = –15V, I_EE = –1mA typ; when V_EE = 0V, I_EE =
±5mA typ; when V_EE = +5V, I_EE = +167mA typ.
4
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