INTERSIL HI5813KIB

HI5813
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May 2001
CMOS 3.3V, 30 Microsecond, 12-Bit,
Sampling A/D Converter with Internal
Track and Hold
• Conversion Time . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30µs
• Throughput Rate . . . . . . . . . . . . . . . . . . . . . . . . . 40 kSPS
• Built-In Track and Hold
• Single Supply Voltage . . . . . . . . . . . . . . . . . . . . . . . +3.3V
• Maximum Power Consumption at 25oC. . . . . . . . . . 3.3mW
Applications
The twelve data outputs feature full high speed CMOS
three-state bus driver capability, and are latched and held
through a full conversion cycle. The output is user
selectable, i.e., 12-bit, 8-bit (MSBs), and/or 4-bit (LSBs). A
data ready flag and conversion start input complete the
digital interface.
• Remote Low Power Data Acquisition Systems
• Battery Operated Systems
• Pen Based PC Handheld Scanners
• DSP Modems
• General Purpose DSP Front End
Part Number Information
PART
NUMBER
HI5813KIB
±2.5
TEMP.
RANGE
(oC)
3634.3
Features
The HI5813 is a 3.3V, very low power, 12-bit, successive
approximation analog-to-digital converter. It can operate
from a single 3V to 6V supply and typically draws a
maximum of 1.0mA (at 25oC) when operating at 3.3V. The
HI5813 features a built-in track and hold. The conversion
time is as low as 25µs with a 3.3V supply.
INL (LSB)
(MAX OVER
TEMP.)
File Number
• µP Controlled Measurement Systems
PKG.
NO.
PACKAGE
-40 to 85 24 Ld SOIC
• PCMCIA Type II Compliant
• PC Based Industrial Controls/DAQ Systems
M24.3
Pinout
HI5813 (SOIC)
TOP VIEW
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DRDY
1
24 VDD
(LSB) D0
2
23 OEL
D1
3
22 CLK
D2
4
21 STRT
D3
5
20 VREF -
D4
6
19 VREF+
D5
7
18 VIN
D6
8
17 VAA +
D7
9
16 VAA-
D8
10
15 OEM
D9
11
14 D11 (MSB)
12
13 D10
VSS
sesta
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 trademark of Intersil Americas Inc. | Copyright © Intersil Americas Inc. 2001
HI5813
Functional Block Diagram
STRT
VDD
TO INTERNAL LOGIC
VSS
VIN
CONTROL
AND
TIMING
CLOCK
CLK
DRDY
32C
OEM
VREF+
16C
D11 (MSB)
8C
50Ω
SUBSTRATE
D10
4C
2C
D9
C
D8
VAA+
VAA-
32C
64C
63
D7
16C
8C
12-BIT
SUCCESSIVE
APPROXIMATION
REGISTER
12-BIT EDGE
TRIGGERED
“D” LATCHES
D6
4C
D5
2C
D4
C
P1
D3
C
D2
D1
VREF D0 (LSB)
OEL
2
HI5813
Absolute Maximum Ratings
Thermal Information
Supply Voltage
VDD to VSS . . . . . . . . . . . . . . . . . . . . (VSS -0.5V) < VDD < +6.5V
VAA+ to VAA- . . . . . . . . . . . . . . . . . . . (VSS -0.5V) to (VSS +6.5V)
VAA+ to VDD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±0.3V
Analog and Reference Inputs
VIN , VREF+, VREF-. . . . . . . . . (VSS -0.3V) < VINA < (VDD +0.3V)
Digital I/O Pins . . . . . . . . . . . . . . . (VSS -0.3V) < VI/O < (VDD +0.3V)
Thermal Resistance (Typical, Note 1)
θJA ( oC/W)
SOIC Package . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
75
Maximum Junction Temperature
SOIC Package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .150oC
Maximum Storage Temperature Range . . . . . . . . . . -65οC to 150oC
Maximum Lead Temperature (Soldering, 10s). . . . . . . . . . . . . 300oC
(SOIC - Lead Tips Only)
Operating Conditions
Temperature Range . . . . . . . . . . . . . . . . . . . . . . . . . . -40oC to 85oC
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:
1. θJA is measured with the component mounted on a low effective thermal conductivity test board in free air. See Tech Brief TB379 for details.
Electrical Specifications
VDD = VAA+ = VREF+ = 3.3V, VSS = VAA - = VREF - = GND, CLK = 500kHz,
Unless Otherwise Specified
25oC
PARAMETER
TEST CONDITIONS
-40oC TO 85oC
MIN
TYP
MAX
MIN
MAX
UNITS
12
-
-
12
-
Bits
Integral Linearity Error, INL (End Point)
-
-
±2.5
-
±2.5
LSB
Differential Linearity Error, DNL
-
-
±2.0
-
±2.0
LSB
Gain Error, FSE (Adjustable to Zero)
-
-
±2.0
-
±2.0
LSB
Offset Error, VOS (Adjustable to Zero)
-
-
±2.5
-
±2.5
LSB
fS = 500kHz, fIN = 1kHz
-
63.9
-
-
-
dB
fS = 500kHz, fIN = 1kHz
-
65.1
-
-
-
dB
Total Harmonic Distortion, THD
fS = 750kHz, fIN = 1kHz
-
-70.8
-
-
-
dBc
Spurious Free Dynamic Range, SFDR
fS = 500kHz, fIN = 1kHz
-
71.8
-
-
-
dB
Input Current, Dynamic
At VIN = VREF+, 0V
-
±50
±100
-
±100
µA
Input Current, Static
Conversion Stopped
-
±0.4
±10
-
±10
µA
Input Bandwidth -3dB
-
1
-
-
-
MHz
Reference Input Current
-
160
-
-
-
µA
ACCURACY
Resolution
DYNAMIC CHARACTERISTICS
Signal to Noise Ratio, SINAD
RMS Signal
RMS Noise + Distortion
Signal to Noise Ratio, SNR
RMS Signal
RMS Noise
ANALOG INPUT
Input Series Resistance, RS
In Series with Input
CSAMPLE
-
420
-
-
-
W
Input Capacitance, C SAMPLE
During Sample State
-
380
-
-
-
pF
Input Capacitance, C HOLD
During Hold State
-
20
-
-
-
pF
High-Level Input Voltage, VIH
2.4
-
-
2.4
-
V
Low-Level Input Voltage, VIL
-
-
0.8
-
0.8
V
DIGITAL INPUTS OEL, OEM, STRT
3
HI5813
Electrical Specifications
VDD = VAA+ = VREF+ = 3.3V, VSS = VAA - = VREF - = GND, CLK = 500kHz,
Unless Otherwise Specified (Continued)
25oC
PARAMETER
TEST CONDITIONS
Input Leakage Current, IIL
Except CLK, VIN = 0V, 5V
Input Capacitance, C IN
-40oC TO 85oC
MIN
TYP
MAX
MIN
MAX
UNITS
-
-
±10
-
±10
µA
-
10
-
-
-
pF
2.6
-
-
2.6
-
V
DIGITAL OUTPUTS
High-Level Output Voltage, VOH
ISOURCE = -400µA
Low-Level Output Voltage, VOL
ISINK = 1.6mA
-
-
0.4
-
0.4
V
Three-State Leakage, IOZ
Except DRDY, VOUT = 0V,
3.3V
-
-
±10
-
±10
µA
Output Capacitance, COUT
Except DRDY
-
20
-
-
-
pF
30
-
-
30
-
µs
TIMING
Conversion Time (tCONV + tACQ)
(Includes Acquisition Time)
Clock Frequency
(Note 2)
0.05
-
0.75
0.05
0.75
MHz
Clock Pulse Width, tLOW, tHIGH
(Note 2)
100
-
-
100
-
ns
Aperture Delay, tDAPR
(Note 2)
-
35
50
-
70
ns
Clock to Data Ready Delay, tD1DRDY
(Note 2)
-
180
210
-
240
ns
Clock to Data Ready Delay, tD2DRDY
(Note 2)
-
180
220
-
250
ns
Start Removal Time, tRSTRT
(Note 2)
75
30
-
75
-
ns
Start Setup Time, tSU STRT
(Note 2)
85
60
-
30
-
ns
Start Pulse Width, tWSTRT
(Note 2)
-
15
25
-
25
ns
Start to Data Ready Delay, tD3 DRDY
(Note 2)
-
110
130
-
160
ns
Output Enable Delay, tEN
(Note 2)
-
65
75
-
80
ns
Output Disabled Delay, tDIS
(Note 2)
-
95
110
-
130
ns
-
0.5
1
-
2.5
mA
POWER SUPPLY CHARACTERISTICS
Supply Current, IDD + IAA
NOTE:
2. Parameter guaranteed by design or characterization, not production tested.
4
HI5813
Timing Diagrams
1
5 - 14
4
3
2
15
1
2
3
CLK
tLOW
tD1DRDY
tHIGH
STRT
tD2DRDY
DRDY
DATA N - 1
D0 - D11
DATA N
HOLD N
VIN
TRACK N
TRACK N + 1
OEL = OEM = VSS
FIGURE 1. CONTINUOUS CONVERSION MODE
15
2
2
1
2
3
4
5
CLK
tSUSTRT
tRSTRT
tWSTRT
STRT
tD3DRDY
DRDY
HOLD
HOLD
TRACK
VIN
FIGURE 2. SINGLE SHOT MODE
OEL OR OEM
tDIS
tEN
1.6mA
90%
50%
D0 - D3 OR D4 - D11
HIGH IMPEDANCE
TO HIGH
HIGH
IMPEDANCE
TO LOW
TO
OUTPUT
PIN
+2.1V
50pF
50%
-1.6mA
10%
FIGURE 3A.
FIGURE 3B.
FIGURE 3. OUTPUT ENABLE/DISABLE TIMING DIAGRAM
5
HI5813
Timing Diagrams
(Continued)
INPUT FREQUENCY = 1kHz
SAMPLING RATE = 33kHz
SNR = 65.55dB
SINAD = 64.18dB
EFFECTIVE BITS = 10.37
THD = -70.02dBc
PEAK NOISE = -70.9dB
SFDR = 71.1dB
+2.1V
50pF
AMPLITUDE (dB)
1.6mA
-400µA
FREQUENCY
FIGURE 4. GENERAL TIMING LOAD CIRCUIT
FIGURE 5. FFT SPECTRUM
Typical Performance Curves
4.00
4.00
3.60
VDD = VAA+ = VREF+ = 3.3V
3.60
3.20
3.20
CLK = 600kHz
CLK = 600kHz
2.40
2.00
CLK = 500kHz
1.60
1.20
DNL ERROR (LSBs)
2.80
2.80
INL (LSBs)
VDD = VAA+ = VREF+ = 3.3V
2.40
2.00
1.60
0.80
0.80
0.40
0.40
0.00
-50 -40 -30 -20 -10
CLK = 500kHz
1.20
0.0
-50 -40 -30 -20 -10
0 10 20 30 40 50 60 70 80 90
TEMPERATURE (oC)
10 20 30 40 50
60 70 80 90
FIGURE 7. DNL vs TEMPERATURE
FIGURE 6. INL vs TEMPERATURE
1.20
0.00
VDD = VAA+ = VREF+ = 3.3V
-0.10
1.10
VDD = VAA+ = VREF+ = 3.3V
-0.20
CLK = 500kHz
-0.30
1.00
CLK = 600kHz
0.90
CLK = 600kHz
0.80
CLK = 500kHz
0.70
FSE (LSBs)
VOS ERROR (LSBs)
0
TEMPERATURE (oC)
-0.40
-0.50
-0.60
-0.70
-0.80
0.60
0.50
-50 -40 -30 -20 -10
-0.90
0
10 20 30 40 50
60 70 80 90
TEMPERATURE (oC)
FIGURE 8. OFFSET ERROR vs TEMPERATURE
6
-1.00
-50 -40 -30 -20 -10
0 10 20 30 40 50 60 70 80 90
TEMPERATURE (oC)
FIGURE 9. FULL SCALE ERROR vs TEMPERATURE
HI5813
Typical Performance Curves
(Continued)
3.0
2.00
SUPPLY CURRENT, IDD (mA)
1.80
VDD = VAA+ = VREF+
VDD = VAA+ = VREF+ = 3.3V
2.5
DNL ERROR (LSBs)
1.60
1.40
1.20
1.00
0.80
2.0
1.5
CLK = 600kHz
1.0
CLK = 500kHz
0.60
0.40
-50 -40 -30 -20 -10
CLK = 500kHz
0.5
0
3.0
10 20 30 40 50 60 70 80 90
TEMPERATURE (oC)
3.1
3.2
FIGURE 10. SUPPLY CURRENT vs TEMPERATURE
3.4
3.5
3.6
FIGURE 11. DNL vs SUPPLY VOLTAGE
Pin Descriptions
Pin Descriptions
3.3
SUPPLY VOLTAGE (V)
(Continued)
PIN #
NAME
DESCRIPTION
PIN #
NAME
DESCRIPTION
1
DRDY
Output flag signifying new data is available.
Goes high at end of clock period 15. Goes low
when new conversion is started.
14
D11
Bit 11 (Most significant bit, MSB).
15
OEM
Three-State enable for D4-D11. Active Low
Input.
2
D0
Bit 0 (Least Significant Bit, LSB).
16
V AA-
Analog Ground, (0V).
3
D1
Bit 1.
17
VAA+
Analog Positive Supply. (+3.3V) (See text).
4
D2
Bit 2.
18
VIN
5
D3
Bit 3.
19
6
D4
Bit 4.
VREF+ Reference Voltage Positive Input, sets 4095
code end of input range.
7
D5
Bit 5.
20
VREF-
8
D6
Bit 6.
Reference Voltage Negative Input, sets 0 code
end of input range.
9
D7
Bit 7.
21
STRT
Start Conversion Input active low, recognized
after end of clock period 15.
10
D8
Bit 8.
22
CLK
11
D9
Bit 9.
CLK Input. Conversion functions are synchronized
to positive going edge. (See text).
12
VSS
Digital Ground, (0V).
23
OEL
Three-State Enable for D0 - D3. Active low input.
13
D10
Bit 10.
24
VDD
Digital Positive Supply (+3.3V).
7
Analog Input.
HI5813
Theory of Operation
HI5813 is a CMOS 12-Bit, Analog-to-Digital Converter that
uses capacitor charge balancing to successively
approximate the analog input. A binary weighted capacitor
network forms the A/D heart of the device. See the block
diagram for the HI5813.
The capacitor network has a common node which is
connected to a comparator. The second terminal of each
capacitor is individually switchable to the input, VREF+ or
VREF -.
During the first three clock periods of a conversion cycle, the
switchable end of every capacitor is connected to the input
and the comparator is being auto balanced at the capacitor
common node.
or 1.4µs. The maximum source impedance (RSOURCE Max)
for a 6µs acquisition time settling to within 0.5 LSB is 1.3kΩ.
If the clock frequency was slower, or the converter was not
restarted immediately (causing a longer sample time), a
higher source impedance could be tolerated.
VIN
RSW ≈ 420Ω
CSAMPLE ≈ 380pF
RSOURCE
-tACQ
- RSW
RSOURCE (MAX) =
CSAMPLE ln [2-(N + 1)]
FIGURE 12. ANALOG INPUT MODEL IN TRACK MODE
During the fourth period, all capacitors are disconnected
from the input; the one representing the MSB (D11) is
connected to the VREF+ terminal; and the remaining
capacitors to VREF -. The capacitor common node, after the
charges balance out, will indicate whether the input was
above 1/2 of (VREF+ - VREF -). At the end of the fourth
period, the comparator output is stored and the MSB
capacitor is either left connected to VREF+ (if the comparator
was high) or returned to VREF -. This allows the next
comparison to be at either 3/4 or 1/4 of (VREF+ - VREF -).
At the end of periods 5 through 14, capacitors representing
D10 through D1 are tested, the result stored, and each
capacitor either left at VREF+ or at VREF -.
At the end of the 15th period, when the LSB (D0) capacitor is
tested, (D0) and all the previous results are shifted to the
output registers and drivers. The capacitors are reconnected
to the input, the comparator returns to the balance state, and
the data ready output goes active. The conversion cycle is
now complete.
Analog Input
The analog input pin is a predominately capacitive load that
changes between the track and hold periods of the
conversion cycle. During hold, clock period 4 through 15, the
input loading is leakage and stray capacitance, typically less
than 5µA and 20pF.
At the start of input tracking, clock period 1, some charge is
dumped back to the input pin. The input source must have
low enough impedance to dissipate the current spike by the
end of the tracking period. The amount of charge is
dependent on supply and input voltages. The average
current is also proportional to clock frequency.
As long as these current spikes settle completely by end of
the signal acquisition period, converter accuracy will be
preserved. The analog input is tracked for 3 clock cycles.
With a clock of 500kHz the track period is 6µs.
A simplified analog input model is presented in Figure 12.
During tracking, the A/D input (VIN ) typically appears as a
380pF capacitor being charged through a 420Ω internal
switch resistance. The time constant is 160ns. To charge this
capacitor from an external “zero Ω” source to 0.5 LSB
(1/8192), the charging time must be at least 9 time constants
8
Reference Input
The reference input VREF+ should be driven from a low
impedance source and be well decoupled.
Current spikes are generated on the reference pin during
each bit test of the successive approximation part of the
conversion cycle as the charge balancing capacitors are
switched between VREF - and VREF+ (clock periods 5 - 14).
These current spikes must settle completely during each bit
test of the conversion to not degrade the accuracy of the
converter. Therefore V REF+ and VREF - should be well
bypassed. Reference input VREF - is normally connected
directly to the analog ground plane. If V REF - is biased for
nulling the converters offset it must be stable during the
conversion cycle.
Full Scale and Offset Adjustment
In many applications the accuracy of the HI5813 would be
sufficient without any adjustments. In applications where
accuracy is of utmost importance full scale and offset errors
may be adjusted to zero.
The VREF+ and VREF - pins reference the two ends of the
analog input range and may be used for offset and full scale
adjustments. In a typical system the VREF - might be
returned to a clean ground, and the offset adjustment done
on an input amplifier. VREF+ would then be adjusted to null
out the full scale error. When this is not possible, the VREF input can be adjusted to null the offset error, however, VREF must be well decoupled.
Full scale and offset error can also be adjusted to zero in the
signal conditioning amplifier driving the analog input (VIN).
Control Signal
The HI5813 may be synchronized from an external source
by using the STRT (Start Conversion) input to initiate
conversion, or if STRT is tied low, may be allowed to free
run. Each conversion cycle takes 15 clock periods.
The input is tracked from clock period 1 through period 3,
then disconnected as the successive approximation takes
place. After the start of the next period 1 (specified by tD
data), the output is updated.
HI5813
The DRDY (Data Ready) status output goes high (specified
by tD1DRDY) after the start of clock period 1, and returns
low (specified by tD2DRDY) after the start of clock period 2.
The 12 data bits are available in parallel on three-state bus
driver outputs. When low, the OEM input enables the most
significant byte (D4 through D11) while the OEL input
enables the four least significant bits (D0 - D3). tEN and tDIS
specify the output enable and disable times.
If the output data is to be latched externally, either the trailing
edge of data ready or the next falling edge of the clock after
data ready goes high can be used.
Figure 2 shows operation of the HI5813 when the STRT pin
is used to initiate a conversion. If STRT is taken high at least
tR STRT before clock period 1 and is not reapplied during
that period, the converter will stay in the track mode and the
DRDY output will remain high. A low signal applied to STRT
will bring the DRDY flag low and the conversion will continue
with clock period 3 on the first positive going clock edge that
meets the tSUSTRT setup time.
Clock
The clock used to drive the HI5813 can range in frequency
from 50kHz up to 750kHz. All converter functions are
synchronized with the rising edge of the clock signal. The
clock can be shut off only during the sample (track) portion
of the conversion cycle. At other times it must be above the
minimum frequency shown in the specifications. In the above
two cases, a further restriction applies in that the clock
should not be shut off during the third sample period for
more than 1ms. This might cause an internal charge pump
voltage to decay.
If the clock is shut off during the conversion time (clock
cycles 4 through 15) of the A/D, the output might be invalid
due to balancing capacitor droop.
The clock must also meet the minimum tLOW and tHIGH
times shown in the specifications. A violation may cause an
internal miscount and invalidate the results.
part of a low pass RC filter to attenuate switching supply
noise. A 10µF capacitor from VAA+ to ground would
attenuate 30kHz noise by approximately 40dB. Note that
back to back diodes should be placed from VDD to VAA+ to
handle supply to capacitor turn-on or turn-off current spikes.
Dynamic Performance
Fast Fourier Transform (FFT) techniques are used to
evaluate the dynamic performance of the A/D. A low
distortion sine wave is applied to the input of the A/D
converter. The input is sampled by the A/D and its output
stored in RAM. The data is than transformed into the
frequency domain with a 4096 point FFT and analyzed to
evaluate the converters dynamic performance such as SNR
and THD. See typical performance characteristics.
Signal-To-Noise Ratio
The signal to noise ratio (SNR) is the measured RMS signal
to RMS sum of noise at a specified input and sampling
frequency. The noise is the RMS sum of all except the
fundamental and the first five harmonic signals. The SNR is
dependent on the number of quantization levels used in the
converter. The theoretical SNR for an N-bit converter with no
differential or integral linearity error is: SNR = (6.02N +
1.76)dB. For an ideal 12-bit converter the SNR is 74dB.
Differential and integral linearity errors will degrade SNR:
Sinewave Signal Power
SNR = 10 Log
Total Noise Power
Signal-To-Noise + Distortion Ratio
SINAD is the measured RMS signal to RMS sum of noise
plus harmonic power and is expressed by the following:
SINAD = 10 Log
Sinewave Signal Power
Noise + Harmonic Power (2nd - 6th)
Effective Number of Bits
The effective number of bits (ENOB) is derived from the
SINAD data:
Power Supplies and Grounding
VDD and VSS are the digital supply pins: they power all
internal logic and the output drivers. Because the output
drivers can cause fast current spikes in the VDD and VSS
lines, VSS should have a low impedance path to digital
ground and VDD should be well bypassed.
Except for VAA+, which is a substrate connection to VDD , all
pins have protection diodes connected to VDD and VSS .
Input transients above VDD or below VSS will get steered to
the digital supplies.
The VAA+ and VAA- terminals supply the charge balancing
comparator only. Because the comparator is autobalanced
between conversions, it has good low frequency supply
rejection. It does not reject well at high frequencies however;
VAA- should be returned to a clean analog ground and VAA+
should be RC decoupled from the digital supply as shown in
Figure 13.
There is approximately 50Ω of substrate impedance
between VDD and VAA+. This can be used, for example, as
9
ENOB =
SINAD - 1.76
6.02
Total Harmonic Distortion
The total harmonic distortion (THD) is the ratio of the RMS
sum of the second through sixth harmonic components to
the fundamental RMS signal for a specified input and
sampling frequency.
THD = 10 Log
Total Harmonic Power (2nd - 6th Harmonic)
Sinewave Signal Power
Spurious-Free Dynamic Range
The spurious-free dynamic range (SFDR) is the ratio of the
fundamental RMS amplitude to the rms amplitude of the next
largest spur or spectral component. If the harmonics are
buried in the noise floor it is the largest peak.
SFDR = 10 Log
Sinewave Signal Power
Highest Spurious Signal Power
HI5813
TABLE 1. CODE TABLE
BINARY OUTPUT CODE
INPUT
VOLTAGE†
VREF+ = 3.3V
VREF - = 0.0V
(V)
DECIMAL
COUNT
D11
D10
D9
D8
D7
D6
D5
D4
D3
D2
D1
D0
Full Scale (FS)
3.2992
4095
1
1
1
1
1
1
1
1
1
1
1
1
FS - 1 LSB
3.2984
4094
1
1
1
1
1
1
1
1
1
1
1
0
3/ FS
4
1/ FS
2
2.4750
3072
1
1
0
0
0
0
0
0
0
0
0
0
1.6500
2048
1
0
0
0
0
0
0
0
0
0
0
0
1/ FS
4
0.8250
1024
0
1
0
0
0
0
0
0
0
0
0
0
1 LSB
0.00080566
1
0
0
0
0
0
0
0
0
0
0
0
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
CODE
DESCRIPTION
Zero
MSB
LSB
† The voltages listed above represent the ideal lower transition of each output code shown as a function of the reference voltage.
+3.3V
0.1µF
10µF
0.1µF
4.7µF
0.01µF
VAA+
VDD
D11
.
.
.
D0
VREF +
OUTPUT
DATA
DRDY
OEM
ANALOG
INPUT
OEL
VIN
STRT
CLK
VREF -
VAA-
500kHz CLOCK
VSS
FIGURE 13. GROUND AND SUPPLY DECOUPLING
10
HI5813
Die Characteristics
DIE DIMENSIONS:
PASSIVATION:
3200µm x 3940µm
Type: PSG
Thickness: 13kÅ ±2.5kÅ
METALLIZATION:
WORST CASE CURRENT DENSITY:
Type: AlSi
Thickness: 11kÅ ±1kÅ
1.84 x 105 A/cm 2
Metallization Mask Layout
HI5813
D1
D0
(LSB)
DRDY
VDD
OEL
CLK
D2
STRT
D3
VREF -
D4
D5
VREF +
D6
D7
VIN
D8
VAA +
VAA -
D9
11
VSS
D10
D11
(MSB)
OEM
HI5813
Small Outline Plastic Packages (SOIC)
M24.3 (JEDEC MS-013-AD ISSUE C)
N
24 LEAD WIDE BODY SMALL OUTLINE PLASTIC PACKAGE
INDEX
AREA
0.25(0.010) M
H
B M
INCHES
E
-B1
2
3
L
SEATING PLANE
-A-
h x 45o
A
D
-C-
e
A1
B
0.25(0.010) M
C
0.10(0.004)
C A M
SYMBOL
MIN
MAX
MIN
MAX
NOTES
A
0.0926
0.1043
2.35
2.65
-
A1
0.0040
0.0118
0.10
0.30
-
B
0.013
0.020
0.33
0.51
9
C
0.0091
0.0125
0.23
0.32
-
D
0.5985
0.6141
15.20
15.60
3
E
0.2914
0.2992
7.40
7.60
4
e
µα
B S
0.05 BSC
1.27 BSC
-
H
0.394
0.419
10.00
10.65
-
h
0.010
0.029
0.25
0.75
5
L
0.016
0.050
0.40
N
α
NOTES:
MILLIMETERS
24
0o
1.27
6
24
8o
0o
1. Symbols are defined in the “MO Series Symbol List” in Section 2.2 of
Publication Number 95.
7
8o
Rev. 0 12/93
2. Dimensioning and tolerancing per ANSI Y14.5M-1982.
3. Dimension “D” does not include mold flash, protrusions or gate burrs.
Mold flash, protrusion and gate burrs shall not exceed 0.15mm
(0.006 inch) per side.
4. Dimension “E” does not include interlead flash or protrusions. Interlead flash and protrusions shall not exceed 0.25mm (0.010 inch) per
side.
5. The chamfer on the body is optional. If it is not present, a visual index
feature must be located within the crosshatched area.
6. “L” is the length of terminal for soldering to a substrate.
7. “N” is the number of terminal positions.
8. Terminal numbers are shown for reference only.
9. The lead width “B”, as measured 0.36mm (0.014 inch) or greater
above the seating plane, shall not exceed a maximum value of
0.61mm (0.024 inch)
10. Controlling dimension: MILLIMETER. Converted inch dimensions
are not necessarily exact.
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Intersil products are sold by description only. Intersil Corporation reserves the right to make changes in circuit design and/or specifications at any time without notice.
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12
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