ZADCS1282 Datasheet, PDF (8/21 Pages) Zentrum Mikroelektronik Dresden AG – 12-Bit, 200ksps, Serial Output ADC Family

Datasheet
ZADCS1282/1242/1222 Family
1.5.2 Specific Parameters of versions with Internal Voltage Reference
(ZADCS12x2V)
(VDD = +2.7V to + 5.25V; fSCLK = 3.2MHz (50% duty cycle); 16 clocks/conversion cycle (200 ksps); qOP = qOPmin … qOPmax)
Parameter
Symbol Conditions
Min Typ Max Unit
Internal Reference at VREF
VREF Output Voltage
TA = + 25°C
2.480
VREF Short-Circuit Current
VREF Temperature Coefficient
Load Regulation
0 to 0.2mA output load
Capacitive Bypass at VREF
4.7
Capacitive Bypass at REFADJ
0.047
REFADJ Adjustment Range
External Reference at VREF (internal buffer disabled by V(REFADJ) = VDD)
VREF Input Voltage Range
1.0
VREF Input Current
VREF Input Resistance
Shutdown VREF Input Current
REFADJ Buffer Disable Threshold
External Reference at VREF_ADJ
VREF = 2.5V
11.5
VDD-
0.5
2.500
± 20
0.35
± 1.5
2.520
30
± 30
V
mA
ppm/°C
mV
µF
µF
%
VDD +
50mV
V
180 215 µA
14
kW
0.1 µA
V
Reference Buffer Gain
VREF_ADJ Input Current
Full Power Down
VREFADJ Input Current
Power Requirements
Full Power-Down mode
2.00
±80 µA
0.1 µA
Positive Supply Voltage
VDD
2.7
5.25 V
Positive Supply Current
Operating Mode ext. VREF
0.85 1.0 mA
ZADCS1282VI
ZADCS1242VI
ZADCS1222VI
IDD
VDD=3.6V
Operating Mode int. VREF
Fast Power-Down
Full Power-Down
1.3 1.4 mA
250 300 _µA
0.5 4.0
Positive Supply Current
Operating Mode ext. VREF
1.00 1.3 mA
ZADCS1282VI
ZADCS1242VI
ZADCS1222VI
Positive Supply Current
ZADCS1282VQ
ZADCS1242VQ
ZADCS1222VQ
Positive Supply Current
ZADCS1282VQ
ZADCS1242VQ
ZADCS1222VQ
IDD
VDD=5.2V ^{Operating Mode int. VREF}
Fast Power-Down
Full Power-Down
Operating Mode ext. VREF
IDD
VDD=3.6V ^{Operating Mode int. VREF}
Fast Power-Down
Full Power-Down
Operating Mode ext. VREF
IDD
VDD=5.2V
Operating Mode int. VREF
Fast Power-Down
Full Power-Down
1.40
250
0.5
0.85
1.3
250
0.5
1.00
1.40
250
0.5
1.6 mA
300 _µA
4.0
1.1¹⁾ mA
1.5¹⁾ mA
350¹⁾
15¹⁾
µA
1.4¹⁾ mA
1.7¹⁾ mA
350¹⁾
20¹⁾
µA
1) _{relaxed maximum limits are due to wider temperature range of automotive qualified version ZADCS12x2VQ}
Copyright © 2008, ZMD AG, Rev. 1.1
All rights reserved. The material contained herein may not be reproduced, adapted, merged, translated, stored, or used without the prior written consent of the copyright owner. The
Information furnished in this publication is preliminary and subject to changes without notice.
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