Datasheet LTC1292, LTC1297 (Analog Devices) - 4
| Hersteller | Analog Devices |
| Beschreibung | Single Chip 12-Bit Data Acquisition Systems |
| Seiten / Seite | 24 / 4 — DIGITAL A D DC ELECTRICAL CHARACTERISTICS The. denotes the specifications … |
| Dateiformat / Größe | PDF / 325 Kb |
| Dokumentensprache | Englisch |
DIGITAL A D DC ELECTRICAL CHARACTERISTICS The. denotes the specifications which
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Textversion des Dokuments
LTC1292/LTC1297
U DIGITAL A D DC ELECTRICAL CHARACTERISTICS The
●
denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25
°
C. (Note 3) LTC1292B/LTC1297B LTC1292C/LTC1297C LTC1292D/LTC1297D SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
ICC Positive Supply Current CS High LTC1292 ● 6 12 mA CS Low LTC1297 ● 6 12 mA CS High Power Shutdown CLK Off LTC1297 ● 5 10 µA IREF Reference Current CS High ● 10 50 µA
Note 1:
Absolute Maximum Ratings are those values beyond which the life below GND or one diode drop above VCC. Be careful during testing at low of a device may be impaired. VCC levels (4.5V), as high level reference or analog inputs (5V) can cause this input diode to conduct, especially at elevated temperatures, and cause
Note 2:
All voltage values are with respect to ground (unless otherwise errors for inputs near full scale. This spec allows 50mV forward bias of noted). either diode. This means that as long as the reference or analog input does
Note 3:
VCC = 5V, VREF = 5V, CLK = 1.0MHz unless otherwise specified. not exceed the supply voltage by more than 50mV, the output code will be
Note 4:
One LSB is equal to VREF divided by 4096. For example, when correct. To achieve an absolute 0V to 5V input voltage range will therefore VREF = 5V, 1LSB = 5V/4096 = 1.22mV. require a minimum supply voltage of 4.950V over initial tolerance,
Note 5:
Linearity error is specified between the actual end points of the temperature variations and loading. A/D transfer curve. The deviation is measured from the center of the
Note 8:
Channel leakage current is measured after the channel selection. quantization band.
Note 9:
Increased leakage currents at elevated temperatures cause the
Note 6:
Recommended operating conditions. S/H to droop, therefore it is recommended that fCLK ≥125kHz at 125°C,
Note 7:
Two on-chip diodes are tied to each reference and analog input fCLK ≥ 31kHz at 85°C, and fCLK ≥ 3kHz at 25°C. which will conduct for reference or analog input voltages one diode drop
W U TYPICAL PERFOR A CE CH C ARA TERISTICS LTC1297 Supply Current (Power Supply Current vs Supply Voltage Supply Current vs Temperature Shutdown) vs Temperature
10 10 10 CLK = 1MHz CLK = 1MHz V 9 CC = 5V TA = 25°C V 9 VCC = 5V REF = 5V 8 8 CS HIGH CLK OFF 8 µA) 7 6 6 7 5 6 4 4 3 SUPPLY CURRENT (mA) SUPPLY CURRENT (mA) 5 SUPPLY CURRENT ( 2 2 4 1 0 3 0 4 5 6 –50 –30 –10 10 30 50 70 90 110 130 – 50 – 25 0 25 50 75 100 125 SUPPLY VOLTAGE (V) AMBIENT TEMPERATURE (°C) AMBIENT TEMPERATURE (°C) LTC1292/7 G01 LTC1292/7 G02 LTC1292/7 G03 12927fb 4
U DIGITAL A D DC ELECTRICAL CHARACTERISTICS The
●
denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25
°
C. (Note 3) LTC1292B/LTC1297B LTC1292C/LTC1297C LTC1292D/LTC1297D SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
ICC Positive Supply Current CS High LTC1292 ● 6 12 mA CS Low LTC1297 ● 6 12 mA CS High Power Shutdown CLK Off LTC1297 ● 5 10 µA IREF Reference Current CS High ● 10 50 µA
Note 1:
Absolute Maximum Ratings are those values beyond which the life below GND or one diode drop above VCC. Be careful during testing at low of a device may be impaired. VCC levels (4.5V), as high level reference or analog inputs (5V) can cause this input diode to conduct, especially at elevated temperatures, and cause
Note 2:
All voltage values are with respect to ground (unless otherwise errors for inputs near full scale. This spec allows 50mV forward bias of noted). either diode. This means that as long as the reference or analog input does
Note 3:
VCC = 5V, VREF = 5V, CLK = 1.0MHz unless otherwise specified. not exceed the supply voltage by more than 50mV, the output code will be
Note 4:
One LSB is equal to VREF divided by 4096. For example, when correct. To achieve an absolute 0V to 5V input voltage range will therefore VREF = 5V, 1LSB = 5V/4096 = 1.22mV. require a minimum supply voltage of 4.950V over initial tolerance,
Note 5:
Linearity error is specified between the actual end points of the temperature variations and loading. A/D transfer curve. The deviation is measured from the center of the
Note 8:
Channel leakage current is measured after the channel selection. quantization band.
Note 9:
Increased leakage currents at elevated temperatures cause the
Note 6:
Recommended operating conditions. S/H to droop, therefore it is recommended that fCLK ≥125kHz at 125°C,
Note 7:
Two on-chip diodes are tied to each reference and analog input fCLK ≥ 31kHz at 85°C, and fCLK ≥ 3kHz at 25°C. which will conduct for reference or analog input voltages one diode drop
W U TYPICAL PERFOR A CE CH C ARA TERISTICS LTC1297 Supply Current (Power Supply Current vs Supply Voltage Supply Current vs Temperature Shutdown) vs Temperature
10 10 10 CLK = 1MHz CLK = 1MHz V 9 CC = 5V TA = 25°C V 9 VCC = 5V REF = 5V 8 8 CS HIGH CLK OFF 8 µA) 7 6 6 7 5 6 4 4 3 SUPPLY CURRENT (mA) SUPPLY CURRENT (mA) 5 SUPPLY CURRENT ( 2 2 4 1 0 3 0 4 5 6 –50 –30 –10 10 30 50 70 90 110 130 – 50 – 25 0 25 50 75 100 125 SUPPLY VOLTAGE (V) AMBIENT TEMPERATURE (°C) AMBIENT TEMPERATURE (°C) LTC1292/7 G01 LTC1292/7 G02 LTC1292/7 G03 12927fb 4