DAC16GS 查看數據表（PDF） - Analog Devices
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DAC16GS Datasheet PDF : 12 Pages
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DAC16
In using high speed op amps, the output capacitance of the
DAC16 appears across the inputs of the op amp where it and the
op amp’s input capacitance will set an additional pole in the op
amp’s loop gain response. The pole is formed with the feedback
resistance and the output resistance of the DAC. This additional
pole may adversely affect the transient response of the circuit
due to the added phase shift. Placing a small capacitor across the
feedback resistance, as shown in Figure 28, compensates for the
additional pole. The value of the capacitor can be determined by
setting RFBCFB = RO (CO + CIN) and should be adjusted for opti-
mum transient response.
The choice of amplifier depends entirely on the required system
accuracy, the required temperature range, and the operating
frequency.
CFB
DAC16
RFB
IDAC
RO
CO
CIN
VOUT
Figure 28. Compensating for the Feedback Pole
OUTLINE DIMENSIONS
Dimensions shown in inches and (mm).
24-Lead Epoxy DIP (P)
(N-24)
1.275 (32.30)
1.125 (28.60)
24
1
PIN 1
0.210
(5.33)
MAX
0.200 (5.05)
0.125 (3.18)
0.022 (0.558)
0.014 (0.356)
0.100
(2.54)
BSC
13 0.280 (7.11)
12 0.240 (6.10)
0.325 (8.25)
0.300 (7.62)
0.060 (1.52)
0.015 (0.38)
0.195 (4.95)
0.150
(3.81)
MIN
0.070 (1.77) SEATING
0.045 (1.15) PLANE
0.115 (2.93)
0.015 (0.381)
0.008 (0.204)
24
1
PIN 1
24-Lead Epoxy SOL (S)
(R-24)
0.6141 (15.60)
0.5985 (15.20)
13
0.2992 (7.60)
0.2914 (7.40)
0.4193 (10.65)
12
0.3937 (10.00)
0.1043 (2.65)
0.0926 (2.35)
0.0291
0.0098
((00..7245))؋
45؇
0.0118 (0.30) 0.0500
0.0040 (0.10)
(1.27)
BSC
8؇
0.0192 (0.49)
0.0138 (0.35)
SEATING
PLANE
0.0125 (0.32)
0؇
0.0091 (0.23)
0.0500 (1.27)
0.0157 (0.40)
–12–
REV. B
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