Datasheet HI-565A/883 Datasheet (intersil)

®
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HI-565A
Data Sheet May 2002
High Speed, Monolithic D/A Converter with Reference
The HI-565A is a fast, 12-bit, current output, digital-to-analog converter. The monolithic chip includes a precision voltage reference, thin-film R2R ladder, reference control amplifier and twelve high speed bipolar current switches.
The Intersil dielectric isolation process provides latch free operation while minimizing stray capacitance and leakage currents, to produce an excellent combination of speed and accuracy. Also, ground currents are minimized to produce a low and constant current through the ground terminal, which reduces error due to code dependent ground currents.
HI-565A dice are laser trimmed for a maximum integral nonlinearity error of ±0.5 LSB at 25 noise buried zener reference is trimmed both for absolute value and temperature coefficient. Power dissipation is typically 250mW, with ±15V supplies.
The HI-565A is offered in both commercial and military grades. See Ordering Information.
o
C. In addition, the low
FN3109.4
Features
• 12-Bit DAC and Reference on a Single Chip
• Pin Compatible With AD565A
• Very High Speed: Settles to ±0.5 LSB in 250ns (Max) Full Scale Switching Time 30ns (Typ)
• Guaranteed For Operation With ±12V Supplies
• Monotonicity Guaranteed Over Temperature
• Nonlinearity Guaranteed Over Temp (Max). . . . ±0.5 LSB
• Low Gain Drift (Max, DAC Plus Ref) . . . . . . . . .25ppm/oC
• Low Power Dissipation . . . . . . . . . . . . . . . . . . . . .250mW
Applications
• CRT Displays
• High Speed A/D Converters
• Signal Reconstruction
• Waveform Synthesis
Ordering Information
PART NUMBER LINEARITY (INL) LINEARITY (DNL) TEMP. RANGE (oC) PACKAGE PKG. NO.
HI1-565AJD-5 0.50 LSB 0.75 LSB 0 to 75 24 Ld SBDIP D24.6 HI1-565ATD-2 0.25 LSB 0.50 LSB -55 to 125 24 Ld SBDIP D24.6 HI1-565ASD/883 0.50 LSB 0.50 LSB -55 to 125 24 Ld SBDIP D24.6 HI1-565ATD/883 0.25 LSB 0.50 LSB -55 to 125 24 Ld SBDIP D24.6
Pinout
REF OUT (+10V)
NC NC
V
CC
REF GND
REF IN
-V
EE
BIPOLAR R IN
IDAC OUT 10V SPAN R 20V SPAN R
POWER GND
HI-565A (SBDIP)
TOP VIEW
1 2 3 4 5 6 7 8
9 10 11 12
24
BIT 1 (MSB) IN
23
BIT 2 IN BIT 3 IN
22 21
BIT 4 IN
20
BIT 5 IN
19
BIT 6 IN
18
BIT 7 IN
17
BIT 8 IN
16
BIT 9 IN
15
BIT 10 IN
14
BIT 11 IN
13
BIT 12 (LSB) IN
Functional Diagram
REF OUT
V
CC
REF
IN
6
5
REF
GND
43
+
-
19.95K
3.5K
3K
HI-565A
0.5mA
I
REF
+
-
712
-V
EE
PWR GND
BIP. OFF
9.95K
DAC
(4X I
REF
X CODE)
24 . . . . . .13
MSB LSB
8
I
O
2.5K
5K
5K
11
10
9
20V SPAN
10V SPAN
OUT
1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 321-724-7143
| Intersil (and design) is a registered trademark of Intersil Americas Inc.
Copyright © Intersil Americas Inc. 2002. All Rights Reserved
HI-565A
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Absolute Maximum Ratings Thermal Information
VCC to Power GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0V to +18V
V
to Power GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0V to -18V
EE
Voltage on DAC Output (Pin 9) . . . . . . . . . . . . . . . . . . . -3V to +12V
Digital Inputs (Pins 13-24) to Power GND . . . . . . . . . . .-1V to +7.0V
REF In to REF GND. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±12V
Bipolar Offset to REF GND . . . . . . . . . . . . . . . . . . . . . . . . . . . ±12V
10V Span R to REF GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±12V
20V Span R to REF GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±24V
REF Out. . . . . . . . . . . . . . . . . . . . . . Indefinite Short to Power GND,
Momentary Short to V
CC
Operating Conditions
Temperature Ranges
HI1-565AX-2, /883 . . . . . . . . . . . . . . . . . . . . . . . . -55
HI1-565AX-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0
CAUTION: Stresses above those listed in “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress only rating and operation of the device at these or any other conditions above those indicated in the operational sections of this specification is not implied.
NOTE:
is measured with the component mounted on an evaluation PC board in free air.
1. θ
JA
o
C to 125oC
o
C to 75oC
Thermal Resistance (Typical, Note 1) θ
SBDIP Package . . . . . . . . . . . . . . . . . . 60 20
Maximum Package Power Dissipation
SBDIP Package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .500mW
Maximum Junction Temperature. . . . . . . . . . . . . . . . . . . . . . .175
Maximum Storage Temperature Range . . . . . . . . . -65
Maximum Lead Temperature (Soldering 10s). . . . . . . . . . . . .300
Die Characteristics
Transistor Count . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 200
Process . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Bipolar-DI
(oC/W) θJC (oC/W)
JA
o
C to 150oC
o
o
C
C
Electrical Specifications T
PARAMETER TEST CONDITIONS
DATA INPUTS (Pins 13 to 24)
Input Voltage Bit ON Logic “1” (T Input Voltage Bit OFF Logic “0” (T Logic Current Bit ON Logic “1” (T Logic Current Bit OFF Logic “0” (T Resolution (Note 2) 12 - - 12 - - Bits
OUTPUT
Unipolar Current (All Bits ON) -1.6 -2.0 -2.4 -1.6 -2.0 -2.4 mA Bipolar Current (All Bits ON or OFF) ±0.8 ±1.0 ±1.2 ±0.8 ±1.0 ±1.2 mA Resistance (Exclusive of Span
Unipolar Offset (25
Bipolar Offset (25 Bipolar Offset (T
/883 Versions Only Capacitance - 20 - - 20 - pF Compliance Voltage (T ACCURACY (Error Relative to Full Scale) Integral Non-Linearity (25
Integral Non-Linearity /883 Versions Only
Differential Non-Linearity 25 Differential Non-Linearity T
o
C) -0.05 0.01 0.05 -0.05 0.01 0.05 % of FS
o
C) -0.15 0.05 0.15 -0.1 0.05 0.1 % of FS
MlN
to T
MAX
)
= 25oC, VCC = +15V, VEE = -15V, Unless Otherwise Specified
A
HI-565AJ, HI-565AS HI-565AT
to T
MlN
to T
MlN
to T
MlN
to T
MlN
Resistors) (Note 2)
(Figure 2, R3 = 50) -0.25 0.05 0.25 -0.2 0.05 0.2 % of FS
to T
MIN
o
C)
End Point Method
to T
(T
MIN
End Point Method
o
C-±0.50 ±0.75 - ±0.25 ±0.50 LSB
to T
MIN
) +2.0 - +5.5 +2.0 - +5.5 V
MAX
) - -+0.8- -+0.8 V
MAX
) - 0.01 +1.0 - 0.01 +1.0 µA
MAX
) - -2.0 -20 - -2.0 -20 µA
MAX
1.8K 2.5K 3.2K 1.8K 2.5K 3.2K
-0.07 0.01 0.07 -0.07 0.01 0.07 % of FS
)(Note 2) -1.5 - +10 -1.5 - +10 V
MAX
MAX
MAX
- ±0.25 (0.006)
)
- ±0.50 (0.012)
±0.50
(0.012)
±0.75
(0.018)
MONOTONICITY GUARANTEED
- ±0.12 (0.003)
- ±0.25 (0.006)
±0.25
(0.006)
±0.50
(0.012)
UNITSMIN TYP MAX MIN TYP MAX
LSB
% of FS
LSB
% of FS
2
HI-565A
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Electrical Specifications T
PARAMETER TEST CONDITIONS
TEMPERATURE COEFFIClENTS
Unipolar Offset Drift - 1 2 - 1 2 ppm/ Bipolar Zero Drift Internal Reference - 5 10 - 5 10 ppm/ Gain Drift, Uni- and Bipolar (Full Scale) Internal Reference - 15 40 - 10 25 ppm/ Differential Nonlinearity Error Drift Int. Ref. - 2 - - 2 - ppm/ SETTLING TIME T0 ±0.5 LSB With High, Z External Load (Notes 2, 3) - 350 500 - 350 500 ns With 75 External Load (Notes 2, 3) - 150 250 - 150 250 ns FULL SCALE TRANSITION From 50% of Logic Input to 90% of Analog Output Rise Time (Note 2) - 15 30 - 15 30 ns Fall Time (Note 2) - 30 50 - 30 50 ns
POWER REQUIREMENTS
I
CC
I
EE
POWER SUPPLY GAIN SENSITIVITY (Note 4) V
CC
V
EE
PROGRAMMABLE OUTPUT RANGES (See Table 2) Unipolar 5 (Note 2) 0 to +5 0 to +5 V Bipolar 5 (Note 2) -2.5 to +2.5 -2.5 to +2.5 V Unipolar 10 (Note 2) 0 to +10 0 to +10 V Bipolar 10 (Note 2) -5 to +5 -5 to +5 V Bipolar 20 (Note 2) -10 to +10 -10 to +10 V
EXTERNAL ADJUSTMENTS
Gain Error R2 = 50 (Figure 2) - ±0.1 ±0.25 - ±0.1 ±0.25 % of FS Bipolar Zero Error R3 = 50 (Figure 3) - ±0.05 ±0.15 - ±0.05 ±0.1 % of FS Gain Adjustment Range (Figure 1) (Note 2) ±0.25 - - ±0.25 - - % of FS Bipolar Zero Adjustment Range (Note 2) ±0.15 - - ±0.15 - - % of FS
REFERENCE INPUT
Input Impedance (Note 2) 15K 20K 25K 15K 20K 25K
REFERENCE OUTPUT
Voltage, Commercial Versions 9.90 10.00 10.10 9.90 10.00 10.10 V Voltage, /883 Versions 9.95 10.00 10.05 9.95 10.00 10.05 V Current (Available for External Loads) 1.5 2.5 - 1.5 2.5 - mA
NOTES:
2. Guaranteed by characterization or design but not tested over the operating temperature range.
3. See settling time discussion and Figure 3.
4. The Power Supply Gain Sensitivity is tested in reference to a V
= 25oC, VCC = +15V, VEE = -15V, Unless Otherwise Specified (Continued)
A
HI-565AJ, HI-565AS HI-565AT
- 9.0 11.8 - 9.0 11.8 mA
- -9.5 -14.5 - -9.5 -14.5 mA
(+11.4 to +16.5VDC) All Bits = 2V, Unipolar
(-11.4 to -16.5VDC) All Bits = 2V, Unipolar
- 3 10 - 3 10 ppm of
- 15 25 - 15 25 ppm of
, VEE of ± 15V.
CC
UNITSMIN TYP MAX MIN TYP MAX
FS/%
FS/%
o
C
o
C
o
C
o
C
3
HI-565A
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Definitions of Specifications
Digital Inputs
The HI-565A accepts digital input codes in binary format and may be user connected for any one of three binary codes. Straight Binary, Two’s Complement (Note 5), or Offset Binary, (See Operating Instructions).
TABLE 1.
ANALOG OUTPUT
(NOTE 5)
DIGITAL
INPUT
MSB...LSB
000...000 Zero -FS
100...000
111...111 +FS - 1 LSB +FS - 1 LSB Zero - 1 LSB
011...111 1/2FS - 1 LSB Zero - 1 LSB +FS - 1 LSB
NOTE:
5. Invert MSB with external inverter to obtain Two’s Complement Coding.
Nonlinearity of a D/A converter is an important measure of its accuracy. It describes the deviation from an ideal straight line transfer curve drawn between zero (all bits OFF) and full scale (all bits ON) (End Point Method).
Differential Nonlinearity for a D/A converter, it is the difference between the actual output voltage change and the ideal (1 LSB) voltage change for a one bit change in code. A Differential Nonlinearity of ±1 LSB or less guarantees monotonicity; i.e., the output always increases for an increasing input.
Settling Time is the time required for the output to settle to within the specified error band for any input code transition. It is usually specified for a full scale or major carry transition, settling to within ±0.5 LSB of final value.
Gain Drift is the change in full scale analog output over the specified temperature range, expressed in parts per million of full scale range per measured with respect to 25 temperatures. Gain drift is calculated for both high (T
-25oC) and low ranges (25oC -TL) by dividing the gain error by the respective change in temperature. The specification is the larger of the two representing worst-case drift.
Offset Drift is the change in analog output with all bits OFF over the specified temperature range expressed in parts per million of full scale range per is measured with respect to 25 temperatures. Offset Drift is calculated for both high (T
-25oC) and low (25oC -TL) ranges by dividing the offset error by the respective change in temperature. The specification given is the larger of the two, representing worst-case drift.
STRAIGHT
BINARY
1
/2FS Zero -FS
o
OFFSET BINARY
(Full Scale)
C (ppm of FSR/oC). Gain error is
o
C at high (TH) and low (TL)
o
C (ppm of FSR/oC). Offset error
o
C at high (TH) and low (TL)
TWO'S
COMPLEMENT
Zero
H
H
Power Supply Sensitivity is a measure of the change in gain and offset of the D/A converter resulting from a change in -15V or +15V supplies. It is specified under DC conditions and expressed as parts per million of full scale range per percent of change in power supply (ppm of FSR/%).
Compliance Voltage is the maximum output voltage range that can be tolerated and still maintain its specified accuracy. Compliance Limit implies functional operation only, and makes no claims to accuracy.
Glitch a glitch on the output of a D/A converter is a transient spike resulting from unequal internal ON-OFF switching times. Worst case glitches usually occur at half-scale or the major carry code transition from 011...1 to 100...0 or vice versa. For example, if turn ON is greater than turn OFF for
011...1 to 100...0, an intermediate state of 000...0 exists, such that, the output momentarily glitches toward zero output. Matched switching times and fast switching will reduce glitches considerably.
Detailed Description
Op Amp Selection
The Hl-565As current output may be converted to voltage using the standard connections shown in Figures 1 and 2. The choice of operational amplifier should be reviewed for each application, since a significant trade-off may be made between speed and accuracy.
For highest precision, use an HA-5135. This amplifier contributes negligible error, but requires about 11µs to settle within ±0.1% following a 10V step.
The Intersil HA-2600/05 is the best all-around choice for this application, and it settles in 1.5µs (also to ±0.1% following a 10V step). Remember, settling time for the DAC amplifier combination is the square root of t are settling times for the DAC and amplifier.
No-Trim Operation
The Hl-565A will perform as specified without calibration adjustments. To operate without calibration, substitute 50 resistors for the 100 trimming potentiometers: In Figure 1 replace R2 with 50 also remove the network on pin 8 and connect 50 to ground. For bipolar operation in Figure 2, replace R3 and R4 with 50 resistors.
With these changes, performance is guaranteed as shown under Specifications, “External Adjustments”. Typical unipolar zero will be ±0.5
The feedback capacitor, C, must be selected to minimize settling time.
LSB plus the op amp offset.
Calibration
Calibration provides the maximum accuracy from a converter by adjusting its gain and offset errors to zero. For the Hl-565A, these adjustments are similar whether the current output is used, or whether an external op amp is
D
2
plus t
2
, where tD, tA
A
4
HI-565A
www.BDTIC.com/Intersil
added to convert this current to a voltage. Refer to Table 2 for the voltage output case, along with Figure 1 or Figure 2.
Calibration is a two step process for each of the five output ranges shown in Table 2. First adjust the negative full scale (zero for unipolar ranges). This is an offset adjust which translates the output characteristic, i.e., affects each code by the same amount.
TABLE 2. OPERATING MODES AND CALIBRATION
CIRCUIT CONNECTIONS CALIBRATION
OUTPUT
MODE
Unipolar (See Figure 1)
Bipolar (See Figure 2)
PRANGE PIN 10 TO PIN 11 TO RESlSTOR (R)
0 to +10V V
0 to +5V V
O
O
Pin 10 1.43K All 0’s
Pin 9 1.1K All 0’s
±10V NC V
±5V V
±2.5V V
O
O
Pin 10 1.43K All 0’s
Pin 9 1.1K All 0’s
Next adjust positive FS. This is a gain error adjustment, which rotates the output characteristic about the negative FS value.
For the bipolar ranges, this approach leaves an error at the zero code, whose maximum value is the same as for integral nonlinearity error. In general, only two values of output may be calibrated exactly; all others must tolerate some error. Choosing the extreme end points (plus and minus full scale) minimizes this distributed error for all other codes.
APPLY
INPUT CODE ADJUST
R1
All 1’s
R2 R1
All 1’s
O
1.69K All 0’s All 1’s
R2 R3
R4 R3
All 1’s
R4 R3
All 1’s
R4
TO SET
V
O
0V
+9.99756V
0V
+4.99878V
-10V
+9.99512V
-5V
+4.99756V
-2.5V
+2.49878V
R2
100
REF
IN
REF
GND
REF OUT
19.95K
6
5
+
-
V
CC
43
10V
3.5K
BIP.
8
OFF.
3K
HI-565A
I
REF
0.5mA
+
-
71224 13
EE
PWR GND
MSB LSB
-V
DAC
(4 x I
x CODE)
CODE INPUT
9.95K
REF
5K
5K
I
O
2.5K
FIGURE 1. UNIPOLAR VOLTAGE OUTPUT
11
20V SPAN
10
10V SPAN
9
DAC OUT
C
-
+
R (SEE
TABLE 2)
100k
V
100
O
R1 50k
+15V
-15V
5
HI-565A
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R3
100
HI-565A
I
REF
0.5mA
+
-
71224 13
-V
EE
PWR GND
R4
100
REF
IN
REF
GND
REF OUT
19.95K
6
5
V
CC
43
+
10V
-
3.5K
3K
FIGURE 2. BIPOLAR VOLTAGE OUTPUT
Settling Time
This is a challenging measurement, in which the result depends on the method chosen, the precision and quality of test equipment and the operating configuration of the DAC (test conditions). As a result, the different techniques in use by converter manufacturers can lead to consistently different results. An engineer should understand the advantage and limitations of a given test method before using the specified settling time as a basis for design.
The previous approach calls for a strobed comparator to sense final perturbations of the DAC output waveform. This gives the LSB a reasonable magnitude (814µV for the HI-565A), which provides the comparator with enough overdrive to establish an accurate ±0.5 LSB window about the final settled value. Also, the required test conditions simulate the DACs environment for a common application - use in a successive approximation A/D converter. Considerable experience has shown this to be a reliable and repeatable way to measure settling time.
The usual specification is based on a 10V step, produced by simultaneously switching all bits from off-to-on (t to-off (t
). The slower of the two cases is specified, as
OFF
measured from 50% of the digital input transition to the final entry within a window of ±0.5 LSB about the settled value. Four measurements characterize a given type of DAC:
(a) t (b) t (c) t (d) t
, to final value +0.5 LSB
ON
, to final value -0.5 LSB
ON
, to final value +0.5 LSB
OFF
, to final value -0.5 LSB
OFF
ON
) or on-
BIP.
OFF.
8
11
20V SPAN
9.95K
DAC
I
O
(4 x I
REF
x CODE)
CODE INPUT
MSB LSB
5K
5K
2.5K
10
9
DAC OUT
10V SPAN
C
-
+
R(SEE
TABLE 2)
V
O
(Cases (b) and (c) may be eliminated unless the overshoot exceeds 0.5 LSB). For example, refer to Figure 3 for the measurement of case (d).
Procedure
As shown in Figure 3B, settling time equals tX plus the comparator delay (t
• Adjust the delay on generator No. 2 for a tX of several microseconds. This assures that the DAC output has settled to its final value.
• Switch on the LSB (+5V).
• Adjust the V COMPARA TOR OUT. This is indicated by traces of equal brightness on the oscilloscope display as shown in Figure 3B. Note DVM reading.
• Switch the LSB to Pulse (P).
• Readjust the V and note DVM reading. One LSB equals one tenth the difference in the DVM readings noted above.
• Adjust the V 5 LSBs (DVM reads 10X, so this sets the comparator to sense the final settled value minus 0.5 Comparator output disappears.
• Reduce generator No. 2 delay until comparator output reappears, and adjust for “equal brightness”.
• Measure t time equals t
= 15ns). To measure tX:
D
supply for 50% triggering at
LSB
supply for 50% triggering as before,
LSB
supply to reduce the DVM reading by
LSB
from scope as shown in Figure 3B. Settling
X
+ tD, i.e., tX + 15ns.
X
LSB).
6
HI-565A
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(A)
OUT
+5V
GENERATOR
24
23
14
P
13
LSB
~100kHz
PULSE
NO. 1
HI-565A
9.95K
2mA
12
SYNC
TRIG OUT
5K
5K
2.5K
DVM
IN
GENERATOR
20V ±20%
BIAS
8
11
10
NC
9
5
PULSE
NO. 2
TURN ON
TURN OFF
10
OUT
(B)
SCHOTTKY DIODES
90
(C)
STROBE
200K
0.1µF
IN (D)
COMP OUT
V
LSB
SUPPLY
(A)
(B)
(TURN
OFF)
(C)
(D)
+3V
0V
0V
-400mV
2V
0.8V
4V
0V
50%
t
X
50%
DIGITAL INPUT
-0.5 LSB
DAC OUTPUT
SETTLING TIME tD = COMPARATOR DELAY
COMP. STROBE
EQUAL BRIGHTNESS
COMP. OUT
FIGURE 3A. FIGURE 3B.
Other Considerations
Grounds
The Hl-565A has two ground terminals, pin 5 (REF GND) and pin 12 (PWR GND). These should not be tied together near the package unless that point is also the system signal ground to which all returns are connected. (If such a point exists, then separate paths are required to pins 5 and 12).
The current through pin 5 is near-zero DC (Note 1); but pin 12 carries up to 1.75mA of code-dependent current from bits 1, 2, and 3. The general rule is to connect pin 5 directly to the system “quiet” point, usually called signal or analog ground. Connect pin 12 to the local digital or power ground. Then, of course, a single path must connect the analog/signal and digital/power grounds.
Layout
Connections to pin 9 (I for high speed performance. Output capacitance of the DAC is only 20pF, so a small change or additional capacitance may alter the op amp’s stability and affect settling time. Connections to pin 9 should be short and few. Component leads should be short on the side connecting to pin 9 (as for feedback capacitor C). See the Settling Time section.
) on the Hl-565A are most critical
OUT
Bypass Capacitors
Power supply bypass capacitors on the op amp will serve the HI-565A also. If no op amp is used, a 0.01µF ceramic capacitor from each supply terminal to pin 12 is sufficient, since supply current variations are small.
Current Cancellation
Current cancellation is a two step process within the HI-565A in which code dependent variations are eliminated, then the resulting DC current is supplied internally. First an auxiliary 9-bit R-2R ladder is driven by the complement of the DACs input code. Together, the main and auxiliary ladders draw a continuous 2.25mA from the internal ground node, regardless of input code. Part of this DC current is supplied by the zener voltage reference, and the remainder is sourced from the positive supply via a current mirror which is laser trimmed for zero current through the external terminal (pin 5).
7
Die Characteristics
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HI-565A
DIE DIMENSIONS:
179 mils x 107 mils x 19 mils ±1 mil
METALLIZATION:
Type: Al Thickness: 16k
Å ±2kÅ
Metallization Mask Layout
V
OUT
REF
V
REF
GND
V+
HI-565A
PASSIVATION:
Type: Nitride Over Silox Nitride Thickness: 3.5k
Å ±0.5kÅ
Silox Thickness: 12kÅ ±1.5kÅ
WORST CASE CURRENT DENSITY:
5
2
0.75 x 10
A/cm
TRANSISTOR COUNT:
200
(MSB)
BIT 1
BIT 2
BIT 3
BIT 4
V
REF
BIPOLAR
12
IDAC OUT
10V
SPAN
BIT 5
IN
-V
S
20V
SPAN
POWER
GND
(LSB)
BIT 11BIT 12
BIT 6
BIT 7
BIT 8
BIT 9
BIT 10
8
HI-565A
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Ceramic Dual-In-Line Metal Seal Packages (SBDIP)
LEAD FINISH
c1
-A-
-B-
S
bbb C A - B
BASE
PLANE
SEATING
PLANE
S1
b2
b
ccc
CA - BM
NOTES:
1. Index area: A notch or a pin one identification mark shall be locat­ed adjacent to pin one and shall be located within the shaded area shown. The manufacturer’s identification shall not be used as a pin one identification mark.
2. The maximum limits of lead dimensions b and c or M shall be measured at the centroid of the finished lead surfaces, when solder dip or tin plate lead finish is applied.
3. Dimensions b1 and c1 apply to lead base metal only. Dimension M applies to lead plating and finish thickness.
4. Corner leads (1, N, N/2, and N/2+1) may be configured with a partial lead paddle. For this configuration dimension b3 replaces dimension b2.
5. Dimension Q shall be measured from the seating plane to the base plane.
6. Measure dimension S1 at all four corners.
7. Measure dimension S2 from the top of the ceramic body to the nearest metallization or lead.
8. N is the maximum number of terminal positions.
9. Braze fillets shall be concave.
10. Dimensioning and tolerancing per ANSI Y14.5M - 1982.
11. Controlling dimension: INCH.
D
A
A
e
DS S
-D­BASE
E
S
S
D
Q
S2
-C-
aaa
METAL
b1
M
(b)
SECTION A-A
A
L
eA/2
CA - BM DS S
(c)
M
eA
c
D24.6 MIL-STD-1835 CDIP2-T24 (D-3, CONFIGURATION C)
24 LEAD CERAMIC DUAL-IN-LINE METAL SEAL PACKAGE
INCHES MILLIMETERS
SYMBOL
A - 0.225 - 5.72 -
b 0.014 0.026 0.36 0.66 2 b1 0.014 0.023 0.36 0.58 3 b2 0.045 0.065 1.14 1.65 ­b3 0.023 0.045 0.58 1.14 4
c 0.008 0.018 0.20 0.46 2
c1 0.008 0.015 0.20 0.38 3
D - 1.290 - 32.77 ­E 0.500 0.610 12.70 15.49 -
e 0.100 BSC 2.54 BSC ­eA 0.600 BSC 15.24 BSC -
eA/2 0.300 BSC 7.62 BSC -
L 0.120 0.200 3.05 5.08 -
Q 0.015 0.075 0.38 1.91 5 S1 0.005 - 0.13 - 6 S2 0.005 - 0.13 - 7
o
α
aaa - 0.015 - 0.38 ­bbb - 0.030 - 0.76 ­ccc - 0.010 - 0.25 -
M - 0.0015 - 0.038 2
N24 248
90
105
o
90
o
105
NOTESMIN MAX MIN MAX
o
Rev. 0 4/94
-
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