LTC1597_15 Datasheet, PDF (9/20 Pages) Linear Technology – 14-Bit and 16-Bit Parallel Low Glitch Multiplying DACs with 4-Quadrant Resistors

LTC1591/LTC1597
TYPICAL PERFOR A CE CHARACTERISTICS (LTC1597)
Differential Nonlinearity vs
Supply Voltage in Bipolar Mode
1.0
0.8
0.6
0.4
0.2
0 _{VREF = 2.5V}
– 0.2
– 0.4 ^{VREF = 2.5V}
V_REF = 10V
V_REF = 10V
– 0.6
– 0.8
– 1.0
2
3
4
5
6
7
SUPPLY VOLTAGE (V)
1597 G10
Unipolar Multiplying Mode Frequency
Response vs Digital Code
0
– 20
– 40
– 60
– 80
– 100
ALL BITS ON
D15 ON
D14 ON
D13 ON
D12 ON
D11 ON
D10 ON
D9 ON
D8 ON
D7 ON
D6 ON
D5 ON
D4 ON
D3 ON
D2 ON
D1 ON
D0 ON
ALL BITS OFF
– 120
100
1k
10k 100k 1M 10M
FREQUENCY (Hz)
1597G11
V_REF
30pF
32145
6–
LTC1597
LT1468
V_OUT
7₊
22
Bipolar Multiplying Mode Frequency
Response vs Digital Code
0 _{ALL BITS ON}
D15 AND D14 ON
– 20 ^{D15 AND D13 ON}
D15 AND D12 ON
D15 AND D11 ON
– 40 D15 AND D10 ON
D15 AND D9 ON
D15 AND D8 ON
– 60 D15 AND D7 ON
D15 AND D6 ON
– 80
D15 AND D5 ON
D15 AND D4 ON
D15 AND D3 ON
D15 AND D2 ON
CODES FROM
MIDSCALE
TO FULL SCALE
D15 AND D1 ON
– 100
10
D15 AND D0 ON
D15 ON*
100 1k 10k 100k 1M 10M
FREQUENCY (Hz)
1597 G12
*DAC ZERO VOLTAGE OUTPUT LIMITED BY BIPOLAR
ZERO ERROR TO – 96dB TYPICAL (–78dB MAX, A GRADE)
V_REF
+
LT1468
–
12pF
12pF
32
14 5 ₆
LTC1597
7
22
V_OUT
15pF
–
LT1468
+
Bipolar Multiplying Mode Frequency
Response vs Digital Code
0 _{ALL BITS OFF}
D14 ON
– 20 ^{D14 AND D13 ON}
D14 TO D12 ON
D14 TO D11 ON
D14 TO D10 ON
– 40 _{D14 TO D9 ON}
D14 TO D8 ON
D14 TO D7 ON
– 60
– 80
D14 TO D6 ON
D14 TO D5 ON
D14 TO D4 ON
D14 TO D3 ON
D14 TO D2 ON
CODES FROM
MIDSCALE
TO ZERO SCALE
D14 TO D1 ON _{D14 TO D0 ON}
– 100
10
D15 ON*
100 1k 10k 100k 1M 10M
FREQUENCY (Hz)
1597 G13
*DAC ZERO VOLTAGE OUTPUT LIMITED BY BIPOLAR
ZERO ERROR TO – 96dB TYPICAL (–78dB MAX, A GRADE)
V_REF
+
LT1468
–
12pF
12pF
32
14 5 ₆
LTC1597
7
22
V_OUT
15pF
–
LT1468
+
15917fa
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