Datasheet LTC1293, LTC1294, LTC1296 (Analog Devices) - 4

LTC1293/LTC1294/LTC1296
U DIGITAL A D DC ELECTRICAL CH C ARA TER S I TICS (Note 3) LTC1293/4/6B LTC1293/4/6C LTC1293/4/6D SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
VIH High Level Input Voltage VCC = 5.25V ● 2.0 V VIL Low Level Input Voltage VCC = 4.75V ● 0.8 V IIH High Level Input Current VIN = VCC ● 2.5 µA IIL Low Level Input Current VIN = 0V ● –2.5 µA VOH High Level Output Voltage VCC = 4.75V, IO = –10mA 4.7 V IO = 360µA ● 2.4 4.0 VOL Low Level Output Voltage VCC = 4.75V, IO = 1.6mA ● 0.4 V IOZ High Z Output Leakage VOUT = VCC, CS High ● 3 µA VOUT = 0V, CS High ● –3 ISOURCE Output Source Current VOUT = 0V –20 mA ISINK Output Sink Current VOUT = VCC 20 mA ICC Positive Supply Current CS High ● 6 12 mA ICC Positive Supply Current CS High, LTC1294BC, LTC1294CC, ● 5 10 µA Power LTC1294DC, LTC1294BI, Shutdown LTC1294CI, LTC1294DI, CLK Off LTC1294BM, LTC1294CM, ● 5 15 µA LTC1294DM IREF Reference Current CS High ● 10 50 µA I– Negative Supply Current CS High ● 1 50 µA ISOURCEs SSO Source Current VSSO = 0V ● 0.8 1.5 mA ISINKs SSO Sink Current VSSO = VCC ● 0.5 1.0 mA
Note 1:
Absolute Maximum Ratings are those values beyond which the life
Note 6:
Recommended operating conditions. of a device may be impaired.
Note 7:
Two on-chip diodes are tied to each reference and analog input
Note 2:
All voltage values are with respect to DGND, AGND and REF– wired which will conduct for reference or analog input voltages one diode drop together (unless otherwise noted). below V– or one diode drop above VCC. Be careful during testing at low
Note 3:
V V CC = 5V, VREF+ = 5V, V CC levels (4.5V), as high level reference or analog inputs (5V) can cause REF– = 0V, V – = 0V for unipolar mode and –5V for bipolar mode, CLK = 1.0MHz unless otherwise specified. The ● this input diode to conduct, especially at elevated temperatures, and cause denotes specifications which apply over the full operating temperature errors for inputs near full scale. This spec allows 50mV forward bias of range; all other limits and typicals T either diode. This means that as long as the reference or analog input A = 25°C. does not exceed the supply voltage by more than 50mV, the output code
Note 4:
These specs apply for both unipolar and bipolar modes. In bipolar will be correct. To achieve an absolute 0V to 5V input voltage range will mode, one LSB is equal to the bipolar input span (2VREF) divided by 4096. therefore require a minimum supply voltage of 4.950V over initial For example, when VREF = 5V, 1LSB (bipolar) = 2 (5V)/4096 = 2.44mV. tolerance, temperature variations and loading.
Note 5:
Linearity error is specified between the actual end points of the A/
Note 8
: Channel leakage current is measured after the channel selection. D transfer curve. The deviation is measured from the center of the quantization band. 129346fs 4