MAX5439EUD [MAXIM]
±15V, 128-Tap, Low-Drift Digital Potentiometers; ± 15V ， 128抽头，低漂移数字电位器
| 型号： | MAX5439EUD |
| 厂家： | 
MAXIM INTEGRATED PRODUCTS |
| 描述： | ±15V, 128-Tap, Low-Drift Digital Potentiometers |
| 文件： | 总11页 (文件大小：792K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
19-2657; Rev 3; 9/04
±±5ꢀ, ±28-Tap, Low-Drift Digital Potentiometers
General Description
Features
The MAX5436–MAX5439 are 128-tap high-voltage ( 5ꢀ
to 15ꢀV ꢁigital poteꢂtioꢃeterꢄ iꢂ paꢅcageꢄ that are halꢆ
the ꢄize oꢆ ꢅoꢃparable ꢁeviꢅeꢄ iꢂ 8-piꢂ SO. They perꢆorꢃ
the ꢄaꢃe ꢆuꢂꢅtioꢂ aꢄ ꢃeꢅhaꢂiꢅal poteꢂtioꢃeterꢄ, but
replaꢅe the ꢃeꢅhaꢂiꢅꢄ with a ꢄiꢃple ꢁigital iꢂterꢆaꢅe. The
ꢁigital logiꢅ iꢄ powereꢁ by a ꢄeparate ꢄiꢂgle +2.7ꢀ to
♦ +10V to +30V Single-Supply Operation
♦ -28V to -10V Single Negative Supply Operation
♦ ±5V to ±15V Dual-Supply Operation
♦ 128 Tap Positions
+5.25ꢀ ꢄupply voltage (ꢀ V. The reꢄiꢄtor ꢄtriꢂg uꢄeꢄ itꢄ
CC
♦ Uncommitted High-Voltage Amplifier
owꢂ aꢂalog ꢄupplieꢄ (ꢀ
aꢂꢁ ꢀ V that require
SS
DD
(MAX5437/MAX5439)
ꢀ
DD
- ꢀ to be greater thaꢂ 9ꢀ aꢂꢁ leꢄꢄ thaꢂ 31.5ꢀ. Thiꢄ
SS
♦ Low Temperature Coefficient
35ppm/°C (End-to-End)
allowꢄ ꢆor greater ꢆlexibility iꢂ voltage raꢂgeꢄ that ꢅaꢂ be
uꢄeꢁ with theꢄe ꢁeviꢅeꢄ. Exaꢃpleꢄ oꢆ aꢂalog ꢄupply
raꢂgeꢄ iꢂꢅluꢁe ꢂot oꢂly ꢁual voltageꢄ oꢆ 5ꢀ to 15ꢀ, but
ꢄiꢂgle-ꢄupply voltageꢄ, ꢄuꢅh aꢄ +10ꢀ, +15ꢀ, +30ꢀ, -30ꢀ,
5ppm/°C (Ratiometric)
♦ Small-Footprint Packages
aꢂꢁ ꢃore, aꢄ loꢂg aꢄ the raꢂgeꢄ oꢆ ꢀ
SS
- ꢀ aꢂꢁ ꢀ
-
DD
SS
CC
10-Pin µMAX (MAX5436/MAX5438)
14-Pin TSSOP (MAX5437/MAX5439)
ꢀ
are ꢃet.
The MAX5437/MAX5439 iꢂꢅluꢁe aꢂ oꢂ-ꢅhip, high-
voltage, uꢂꢅoꢃꢃitteꢁ aꢃpliꢆier, proviꢁiꢂg aꢁꢁitioꢂal
reꢁuꢅtioꢂꢄ iꢂ boarꢁ ꢄpaꢅe aꢂꢁ ꢅoꢄt. Other ꢆeatureꢄ
iꢂꢅluꢁe low 35ppꢃ/°C eꢂꢁ-to-eꢂꢁ aꢂꢁ 5ppꢃ/°C ratio-
ꢃetriꢅ reꢄiꢄtor teꢃperature ꢅoeꢆꢆiꢅieꢂtꢄ, a 3-wire SPI™/
QSPI™/MICROWIRE™-ꢅoꢃpatible ꢄerial iꢂterꢆaꢅe, aꢂꢁ
a power-oꢂ reꢄet to ꢃiꢁꢄꢅale.
♦ Glitchless Switching Between the Resistor Taps
♦ 3-Wire SPI/QSPI/MICROWIRE-Compatible Serial
Interface
♦ 50kΩ/100kΩ End-to-End Resistances
♦ Power-On Reset: Wiper Goes to Midscale
The MAX5436/MAX5438 are available iꢂ 10-piꢂ µMAX
paꢅcageꢄ. The MAX5437/MAX5439 are available iꢂ 14-
piꢂ TSSOP paꢅcage. Eaꢅh ꢁeviꢅe iꢄ guaraꢂteeꢁ over
the exteꢂꢁeꢁ teꢃperature raꢂge oꢆ -40°C to +85°C.
(Position 64)
Ordering Information
PIN-
RESISTANCE
PART
TEMP RANGE
PACKAGE
(kΩ)
MAX5436EUB -40°C to +85°C 10 µMAX
MAX5437EUD -40°C to +85°C 14 TSSOP
MAX5438EUB -40°C to +85°C 10 µMAX
MAX5439EUD -40°C to +85°C 14 TSSOP
50
50
Applications
LCD Sꢅreeꢂ Coꢂtraꢄt Aꢁjuꢄtꢃeꢂt
100
100
Data-Aꢅquiꢄitioꢂ Syꢄteꢃꢄ
Meꢅhaꢂiꢅal Poteꢂtioꢃeter Replaꢅeꢃeꢂt
Low-Driꢆt Prograꢃꢃable Gaiꢂ Aꢃpliꢆier
Auꢁio ꢀoluꢃe Coꢂtrol
Pin Configurations
TOP VIEW
1
2
3
4
5
6
7
14 V
CC
SCLK
DIN
SCLK
DIN
1
2
3
4
5
10 V
CC
13
12
L
9
8
7
6
L
MAX5436
MAX5438
CS
W
CS
W
H
11 H
SHDN
GND
MAX5437
MAX5439
GND
10
9
V
SS
V
V
DD
DD
IN+
IN-
V
SS
µMAX
OUT
8
SPI/QSPI are trademarks of Motorola, Inc.
TSSOP
MICROWIRE is a trademark of National Semiconductor Corp.
________________________________________________________________ Maxim Integrated Products
1
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
±±5ꢀ, ±28-Tap, Low-Drift Digital Potentiometers
ABSOLUTE MAXIMUM RATINGS
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
to GND, ꢀ = GND........................................-0.3ꢀ to +34ꢀ
Coꢂtiꢂuouꢄ Power Diꢄꢄipatioꢂ (T = +70°CV
A
DD
SS
DD
DD
CC
CC
SS
to GND, ꢀ
= GND........................................-34ꢀ to +0.3ꢀ
10-Piꢂ µMAX (ꢁerate 6.94ꢃW/°C above +70°CV.........556ꢃW
14-Piꢂ TSSOP (ꢁerate 9.1ꢃW/°C above +70°CV .........727ꢃW
Operatiꢂg Teꢃperature Raꢂge ...........................-40°C to +85°C
Juꢂꢅtioꢂ Teꢃperature......................................................+150°C
Storage Teꢃperature Raꢂge.............................-65°C to +150°C
Leaꢁ Teꢃperature (ꢄolꢁeriꢂg, 10ꢄV .................................+300°C
DD
to ꢀ ..............................................................-0.3ꢀ to +34ꢀ
SS
to ꢀ ........................................................-6.3ꢀ to +28.75ꢀ
CC
to ꢀ ..............................................................-0.3ꢀ to +34ꢀ
SS
to GND..............................................................-0.3ꢀ to +6ꢀ
DIN, SCLK, CS, SHDN ...............................-0.3ꢀ to (ꢀ
H, L, W, IN+, IN-, OUT .....................(ꢀ - 0.3ꢀV to (ꢀ
+ 0.3ꢀV
+ 0.3ꢀV
CC
DD
SS
Maxiꢃuꢃ Coꢂtiꢂuouꢄ Curreꢂt iꢂto H, L, aꢂꢁ W
MAX5436–MAX5439....................................................... 1ꢃA
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
ELECTRICAL CHARACTERISTICS
(ꢀ
= +15ꢀ, ꢀ = -15ꢀ, ꢀ
= +25°C, uꢂleꢄꢄ otherwiꢄe ꢂoteꢁ.V
= +5ꢀ, ꢀ = ꢀ , ꢀ = ꢀ , T = -40°C to +85°C, uꢂleꢄꢄ otherwiꢄe ꢂoteꢁ. Typiꢅal valueꢄ are at
DD
SS
CC
H
DD
L
SS
A
T
A
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
DC PERFORMANCE (voltage-divider mode)
Reꢄolutioꢂ
2N
128
Tapꢄ
LSB
Iꢂtegral Noꢂliꢂearity
Diꢆꢆereꢂtial Noꢂliꢂearity
Eꢂꢁ-to-Eꢂꢁ Reꢄiꢄtor Teꢃpꢅo
Ratioꢃetriꢅ Reꢄiꢄtor Teꢃpꢅo
Full-Sꢅale Error
INL
DNL
(Note 1V
(Note 1V
±1
±1
LSB
TC
35
5
ppꢃ/°C
ppꢃ/°C
LSB
R
R
R
R
R
= 50cΩ (MAX5436/MAX5437V
= 50cΩ (MAX5436/MAX5437V
= 100cΩ (MAX5438/MAX5439V
= 100cΩ (MAX5438/MAX5439V
-0.3
+0.3
-0.15
+0.15
HL
HL
HL
HL
Zero-Sꢅale Error
LSB
Full-Sꢅale Error
LSB
Zero-Sꢅale Error
LSB
DC PERFORMANCE (variable-resistor mode)
Reꢄolutioꢂ
2N
128
Tapꢄ
LSB
LSB
Iꢂtegral Noꢂliꢂearity
Diꢆꢆereꢂtial Noꢂliꢂearity
INL
DNL
(Note 2V
(Note 2V
±1
±1
DC PERFORMANCE (resistor characteristics)
Wiper Reꢄiꢄtaꢂꢅe
Wiper Capaꢅitaꢂꢅe
W
R
W
C
(Note 3V
0.9
6
2
cΩ
Miꢁꢄꢅale
pF
MAX5438/MAX5439
MAX5436/MAX5437
75
100
50
125
Eꢂꢁ-to-Eꢂꢁ Reꢄiꢄtaꢂꢅe
R
HL
cΩ
37.5
62.5
DIGITAL INPUTS
Iꢂput High ꢀoltage
Iꢂput Low ꢀoltage
ꢀ
ꢀ
= 4.75ꢀ to 5.25ꢀ (Note 4V
= 4.75ꢀ to 5.25ꢀ
2.4
ꢀ
ꢀ
CC
CC
0.8
2
_______________________________________________________________________________________
±±5ꢀ, ±28-Tap, Low-Drift Digital Potentiometers
ELECTRICAL CHARACTERISTICS (continued)
(ꢀ
= +15ꢀ, ꢀ = -15ꢀ, ꢀ
= +25°C, uꢂleꢄꢄ otherwiꢄe ꢂoteꢁ.V
= +5ꢀ, ꢀ = ꢀ , ꢀ = ꢀ , T = -40°C to +85°C, uꢂleꢄꢄ otherwiꢄe ꢂoteꢁ. Typiꢅal valueꢄ are at
DD
SS
CC
H
DD
L
SS
A
T
A
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
Iꢂput High ꢀoltage
Iꢂput Low ꢀoltage
Iꢂput Leacage Curreꢂt
Iꢂput Capaꢅitaꢂꢅe
ꢀ
ꢀ
= 2.7ꢀ to 3.6ꢀ
= 2.7ꢀ to 3.6ꢀ
2.0
ꢀ
ꢀ
CC
CC
0.6
±1.0
µA
pF
5.0
DYNAMIC CHARACTERISTICS (analog)
R
C
= 50cΩ, ꢃiꢁꢄꢅale, ꢀ = 1.5ꢀ
,
HL
H
P-P
400
200
5
= 20pF, voltage-ꢁiviꢁer ꢃoꢁe
WIPER
Wiper -3ꢁB Baꢂꢁwiꢁth
Wiper Settliꢂg Tiꢃe
BW
cHz
µꢄ
W
R
C
= 100cΩ, ꢃiꢁꢄꢅale, ꢀ = 1.5ꢀ
,
HL
H
P-P
= 20pF, voltage-ꢁiviꢁer ꢃoꢁe
WIPER
C
= 20pF, ꢅoꢁe 1 to ꢅoꢁe 127, ꢄettle
WIPER
t
IL
to 0.5LSB
AMPLIFIER CHARACTERISTICS (analog)
Iꢂput Biaꢄ Curreꢂt
Iꢂput Oꢆꢆꢄet ꢀoltage
Oꢆꢆꢄet-ꢀoltage Teꢃperature Driꢆt
Iꢂput Oꢆꢆꢄet Curreꢂt
Uꢂity-Gaiꢂ Baꢂꢁwiꢁth
Slew Rate
I
15
±6
ꢂA
ꢃꢀ
B
ꢀ
OS
ꢀ
10
µꢀ/°C
ꢂA
OSD
I
2
OS
UBW
SR
C
= 250pF
100
0.25
100
110
cHz
ꢀ/µꢄ
ꢀ/ꢃꢀ
ꢂꢀ/√Hz
ꢀ
A
LOAD
Large-Sigꢂal ꢀoltage Gaiꢂ
Iꢂput Noiꢄe
A
R
= 100cΩ, ꢀ
= ±14ꢀ
ꢀO
LOAD
OUT
ꢀ
ꢆ = 1cHz
N
Iꢂput Coꢃpliaꢂꢅe
Output Coꢃpliaꢂꢅe
DC CMRR
CMR
ꢀ
ꢀ
+ 1
ꢀ
- 2
I
SS
SS
DD
DD
CMR
I
=
LOAD
5ꢃA
+ 1
ꢀ
- 1
ꢀ
O
CMRR
PSRR
68
70
ꢁB
DC PSRR
ꢁB
TIMING CHARACTERISTICS (digital) (Note 5, Figure 3V
SCLK Cloꢅc Frequeꢂꢅy
SCLK Cloꢅc Perioꢁ
ꢆ
0
10
MHz
ꢂꢄ
ꢂꢄ
ꢂꢄ
ꢂꢄ
ꢂꢄ
ꢂꢄ
ꢂꢄ
ꢂꢄ
ꢂꢄ
ꢂꢄ
CLK
t
100
40
40
40
10
40
0
CP
SCLK Pulꢄe Wiꢁth High
SCLK Pulꢄe Wiꢁth Low
CS Fall to SCLK Riꢄe Setup Tiꢃe
SCLK Riꢄe to CS Riꢄe Holꢁ Tiꢃe
DIN Setup Tiꢃe
t
CH
t
CL
t
CSS
CSH
t
t
DS
DIN Holꢁ Tiꢃe
t
DH
SCLK Riꢄe to CS Fall Delay
CS Riꢄe to SCLK Riꢄe Holꢁ
CS Pulꢄe Wiꢁth High
t
10
40
100
CSO
t
CS1
t
CSW
POWER SUPPLIES
Poꢄitive Aꢂalog Supply ꢀoltage
Negative Aꢂalog Supply ꢀoltage
ꢀ
0
31.5
0
ꢀ
ꢀ
DD
ꢀ
-28.8
SS
_______________________________________________________________________________________
3
±±5ꢀ, ±28-Tap, Low-Drift Digital Potentiometers
ELECTRICAL CHARACTERISTICS (continued)
(ꢀ
= +15ꢀ, ꢀ = -15ꢀ, ꢀ
= +25°C, uꢂleꢄꢄ otherwiꢄe ꢂoteꢁ.V
= +5ꢀ, ꢀ = ꢀ , ꢀ = ꢀ , T = -40°C to +85°C, uꢂleꢄꢄ otherwiꢄe ꢂoteꢁ. Typiꢅal valueꢄ are at
DD
SS
CC
H
DD
L
SS
A
T
A
PARAMETER
SYMBOL
CONDITIONS
MIN
9.0
TYP
MAX
31.5
5.25
UNITS
Aꢂalog Supply Separatioꢂ
Digital Supply ꢀoltage
ꢀ
ꢀ
ꢀ
- ꢀ
- ꢀ
ꢀ
ꢀ
DS
CC
DD
CC
SS
ꢀ
2.70
Digital Supply to Negative Aꢂalog
Supply Separatioꢂ
ꢀ
2.7
31.5
ꢀ
CS
SS
Power-Oꢂ Reꢄet Threꢄholꢁ
Digital Supply Curreꢂt
POR
1.6
30
ꢀ
I
(Note 4V
50
60
µA
CC
MAX5436/MAX5438
SHDN = GND ꢆor MAX5437/MAX5439
30
105
55
Poꢄitive Aꢂalog Supply Curreꢂt
Negative Aꢂalog Supply Curreꢂt
I
µA
µA
DD
SHDN = ꢀ
215
110
250
CC
MAX5436/MAX5438
SHDN = GND ꢆor MAX5437/MAX5439
I
SS
SHDN = ꢀ
130
CC
Note 1: The DNL aꢂꢁ INL are ꢃeaꢄureꢁ with the poteꢂtioꢃeter ꢅoꢂꢆigureꢁ aꢄ a voltage-ꢁiviꢁer with H = ꢀ
aꢂꢁ L = ꢀ . The
SS
DD
wiper terꢃiꢂal iꢄ uꢂloaꢁeꢁ.
Note 2: The DNL aꢂꢁ INL are ꢃeaꢄureꢁ with the poteꢂtioꢃeter ꢅoꢂꢆigureꢁ aꢄ a variable reꢄiꢄtor. H iꢄ uꢂꢅoꢂꢂeꢅteꢁ aꢂꢁ L = ꢀ
.
SS
The wiper terꢃiꢂal iꢄ ꢁriveꢂ with a ꢄourꢅe ꢅurreꢂt oꢆ 80µA ꢆor the 50cΩ ꢅoꢂꢆiguratioꢂ aꢂꢁ 40µA ꢆor the 100cΩ ꢅoꢂꢆiguratioꢂ.
Note 3: The wiper reꢄiꢄtaꢂꢅe iꢄ ꢃeaꢄureꢁ aꢄꢄuꢃiꢂg the ꢄourꢅe ꢅurreꢂtꢄ giveꢂ iꢂ Note 2.
Note 4: The ꢁeviꢅe ꢁrawꢄ ꢅurreꢂt iꢂ exꢅeꢄꢄ oꢆ the ꢄpeꢅiꢆieꢁ ꢄupply ꢅurreꢂt wheꢂ the ꢁigital iꢂputꢄ are ꢁriveꢂ with voltageꢄ betweeꢂ
(ꢀ
CC
- 0.5ꢀV aꢂꢁ (GND + 0.5ꢀV. See Supply Curreꢂt vꢄ. Digital Iꢂput ꢀoltage iꢂ the Typical Operating Characteristics ꢄeꢅtioꢂ.
Note 5: Guaraꢂteeꢁ by ꢁeꢄigꢂ aꢂꢁ ꢅharaꢅterizatioꢂ.
Typical Operating Characteristics
(ꢀ
= +15ꢀ, ꢀ = -15ꢀ, ꢀ
= +5ꢀ, ꢀ = ꢀ , ꢀ = ꢀ , T = +25°C, uꢂleꢄꢄ otherwiꢄe ꢂoteꢁ.V
DD
SS
CC
H
DD
L
SS
A
SUPPLY CURRENT
vs. DIGITAL INPUT VOLTAGE
WIPER RESISTANCE vs. INPUT CODE
WIPER RESISTANCE vs. INPUT CODE
2.0
3000
2800
2600
2400
2200
2000
1800
1600
1400
1200
1000
1100
V
V
= +5V
= -5V
DD
SS
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
1075
1050
1025
1000
975
CONDITIONS OF NOTE 2
CONDITIONS OF NOTE 2
950
925
900
875
850
0
1
2
3
4
5
0
16 32 48 64 80 96 112 128
INPUT CODE
0
16 32 48 64 80 96 112 128
INPUT CODE
DIGITAL INPUT VOLTAGE (V)
4
_______________________________________________________________________________________
±±5ꢀ, ±28-Tap, Low-Drift Digital Potentiometers
Typical Operating Characteristics (continued)
(ꢀ
= +15ꢀ, ꢀ = -15ꢀ, ꢀ
= +5ꢀ, ꢀ = ꢀ , ꢀ = ꢀ , T = +25°C, uꢂleꢄꢄ otherwiꢄe ꢂoteꢁ.V
CC H DD L SS A
DD
SS
W-TO-L RESISTANCE CHANGE
vs. INPUT CODE
DIGITAL SUPPLY CURRENT
vs. TEMPERATURE
END-TO-END RESISTANCE % CHANGE
vs. TEMPERATURE
100
40
35
30
25
20
15
10
0.15
90
80
70
60
50
40
30
20
10
0
0.10
0.05
0
100kΩ
50kΩ
-0.05
-0.10
-0.15
-0.20
-0.25
50kΩ
100kΩ
0
16 32 48 64 80 96 112 128
INPUT CODE
-40
-15
10
35
60
85
-40
-15
10
35
60
85
TEMPERATURE (°C)
TEMPERATURE (°C)
MIDSCALE SWITCHING TRANSIENT
(CODE 63 TO CODE 64)
VARIABLE-RESISTOR DNL
vs. INPUT CODE (50kΩ)
VARIABLE-RESISTOR DNL
vs. INPUT CODE (100kΩ)
MAX5436 toc07
0.10
0.08
0.06
0.04
0.02
0
0.10
0.08
0.06
0.04
0.02
0
CONDITIONS OF NOTE 2
CONDITIONS OF NOTE 2
CS
2V/div
-0.02
-0.04
-0.06
-0.08
-0.10
-0.02
-0.04
-0.06
-0.08
-0.10
V
W-L
100mV/div
C
= 20pF
WIPER
100ns/div
0
16 32 48 64 80 96 112 128
INPUT CODE
0
16 32 48 64 80 96 112 128
INPUT CODE
VOLTAGE-DIVIDER DNL
vs. INPUT CODE (50kΩ)
VARIABLE-RESISTOR INL
vs. INPUT CODE (50kΩ)
VARIABLE-RESISTOR INL
vs. INPUT CODE (100kΩ)
0.010
0.008
0.006
0.004
0.002
0
0.30
0.25
0.20
0.15
0.10
0.05
0
0.25
0.20
0.15
0.10
0.05
0
CONDITIONS OF NOTE 2
CONDITIONS OF NOTE 2
-0.002
-0.004
-0.006
-0.008
-0.010
-0.05
-0.10
-0.15
-0.05
-0.10
0
16 32 48 64 80 96 112 128
INPUT CODE
0
16 32 48 64 80 96 112 128
INPUT CODE
0
16 32 48 64 80 96 112 128
INPUT CODE
_______________________________________________________________________________________
5
±±5ꢀ, ±28-Tap, Low-Drift Digital Potentiometers
Typical Operating Characteristics (continued)
(ꢀ
= +15ꢀ, ꢀ = -15ꢀ, ꢀ
= +5ꢀ, ꢀ = ꢀ , ꢀ = ꢀ , T = +25°C, uꢂleꢄꢄ otherwiꢄe ꢂoteꢁ.V
DD
SS
CC
H
DD
L
SS
A
VOLTAGE-DIVIDER DNL
vs. INPUT CODE (100kΩ)
VOLTAGE-DIVIDER INL
vs. INPUT CODE (100kΩ)
VOLTAGE-DIVIDER INL
vs. INPUT CODE (50kΩ)
0.010
0.05
0.04
0.03
0.02
0.01
0
0.05
0.008
0.006
0.004
0.002
0
0.04
0.03
0.02
0.01
0
-0.002
-0.004
-0.006
-0.008
-0.010
-0.01
-0.02
-0.03
-0.04
-0.05
-0.01
-0.02
-0.03
-0.04
-0.05
0
16 32 48 64 80 96 112 128
INPUT CODE
0
16 32 48 64 80 96 112 128
INPUT CODE
0
16 32 48 64 80 96 112 128
INPUT CODE
WIPER FREQUENCY RESPONSE
AT MIDSCALE (100kΩ)
AMPLIFIER SMALL-SIGNAL
FREQUENCY RESPONSE
AMPLIFIER OUTPUT
vs. OUTPUT LOAD CURRENT
0
-2
5
0
14.000
13.999
13.998
13.997
13.996
13.995
V
= 50mV
P-P
V
C
= 1.5V
P-P
V
= +13V
IN
H
IN
UNITY GAIN
= 20pF
GAIN SETTING 1.077
WIPER
-4
-6
-8
-5
-10
-12
-14
-16
-18
-20
-10
-15
-20
0.01
0.1
1
10
100
1000
0.01
0.1
1
10
100
1000
0
2
4
6
8
10
FREQUENCY (kHz)
FREQUENCY (kHz)
LOAD CURRENT (mA)
AMPLIFIER INPUT-REFERRED OFFSET
vs. TEMPERATURE
0
-0.2
-0.4
-0.6
-0.8
-1.0
-1.2
-1.4
-1.6
-1.8
-2.0
-40
-15
10
35
60
85
TEMPERATURE (°C)
6
_______________________________________________________________________________________
±±5ꢀ, ±28-Tap, Low-Drift Digital Potentiometers
Pin Description
PIN
NAME
DESCRIPTION
MAX5436/
MAX5438
1
MAX5437/
MAX5439
1
SCLK
DIN
Serial Cloꢅc Iꢂput
Serial Data Iꢂput
2
3
2
3
CS
Chip Seleꢅt
—
4
4
SHDN
GND
Aꢃpliꢆier Shutꢁowꢂ
Aꢂalog aꢂꢁ Digital Grouꢂꢁ
5
5
6
ꢀ
Negative Aꢂalog Supply. Bypaꢄꢄ with a 0.1µF ꢅapaꢅitor to GND.
Aꢃpliꢆier Output
SS
—
—
—
6
7
OUT
IN-
8
Aꢃpliꢆier Negative Iꢂput
9
IN+
Aꢃpliꢆier Poꢄitive Iꢂput
10
11
12
13
14
ꢀ
Poꢄitive Aꢂalog Supply. Bypaꢄꢄ with a 0.1µF ꢅapaꢅitor to GND.
High Terꢃiꢂal oꢆ Reꢄiꢄtor
DD
7
H
8
W
L
Wiper Terꢃiꢂal oꢆ Reꢄiꢄtor
9
Low Terꢃiꢂal oꢆ Reꢄiꢄtor
10
ꢀ
Digital Supply. Bypaꢄꢄ with a 0.1µF ꢅapaꢅitor to GND.
CC
Adjustable Gain Amplifier
The MAX5436/MAX5438 are uꢄeꢁ with the MAX427 to
ꢃace a ꢁigitally aꢁjuꢄtable gaiꢂ ꢅirꢅuit aꢄ ꢄhowꢂ iꢂ
Figure 4. The ꢂorꢃal ꢆeeꢁbaꢅc reꢄiꢄtor iꢄ replaꢅeꢁ with
the MAX5436/MAX5438 iꢂ a variable-reꢄiꢄtor ꢅoꢂꢆigura-
tioꢂ ꢄo that the gaiꢂ oꢆ the ꢅirꢅuit ꢅaꢂ be ꢁigitally ꢅoꢂ-
trolleꢁ. The MAX5437/MAX5439 ꢅaꢂ uꢄe the iꢂterꢂal
high-voltage aꢃpliꢆier to ꢃace thiꢄ ꢁigitally aꢁjuꢄtable
gaiꢂ ꢅirꢅuit.
Detailed Description
Digital Interface Operation
The MAX5436–MAX5439 uꢄe a 3-wire SPI/QSPI/
MICROWIRE-ꢅoꢃpatible ꢄerial ꢁata iꢂterꢆaꢅe to ꢅoꢂtrol
the wiper poꢄitioꢂ. Thiꢄ write-oꢂly iꢂterꢆaꢅe ꢅoꢂtaiꢂꢄ
three iꢂputꢄ: ꢅhip ꢄeleꢅt (CSV, ꢁata iꢂ (DINV, aꢂꢁ ꢄerial
ꢅloꢅc (SCLKV. Wheꢂ CS iꢄ taceꢂ low, ꢁata ꢆroꢃ DIN iꢄ
ꢄyꢂꢅhroꢂouꢄly loaꢁeꢁ iꢂto the ꢄerial ꢄhiꢆt regiꢄter oꢂ the
riꢄiꢂg eꢁge oꢆ eaꢅh SCLK pulꢄe (Figure 2V. The 8-bit
ꢁata worꢁ requireꢄ 8 ꢅloꢅc pulꢄeꢄ to iꢂput the ꢄerial
ꢁata. Note that the ꢆirꢄt bit oꢆ the ꢁata worꢁ, D7, iꢄ
uꢂuꢄeꢁ aꢂꢁ ꢄhoulꢁ be igꢂoreꢁ. Thereꢆore, the ꢄeꢅoꢂꢁ
riꢄiꢂg eꢁge oꢆ SCLK loaꢁꢄ the MSB. Aꢆter all the ꢁata
bitꢄ have beeꢂ ꢄhiꢆteꢁ iꢂ, they are latꢅheꢁ iꢂto the
poteꢂtioꢃeter ꢅoꢂtrol regiꢄter wheꢂ CS traꢂꢄitioꢂꢄ ꢆroꢃ
low to high, the wiper poꢄitioꢂ iꢄ theꢂ upꢁateꢁ. Note
that iꢆ CS iꢄ ꢂot cept low ꢁuriꢂg the eꢂtire ꢁata ꢄtreaꢃ,
the ꢁata will be ꢅorrupteꢁ aꢂꢁ the ꢁeviꢅe will ꢂeeꢁ to
be reloaꢁeꢁ.
LCD Biasing Control Applications
The MAX5436–MAX5439 are iꢁeal ꢆor LCDꢄ that require
ꢄeparate voltage ꢆor ꢅoꢂtraꢄt ꢅoꢂtrol iꢂ aꢁꢁitioꢂ to the
ꢃaiꢂ ꢄupply voltage. Figure 5a ꢄhowꢄ the MAX5436–
MAX5439 beiꢂg uꢄeꢁ ꢆor LCD ꢅoꢂtraꢄt ꢅoꢂtrol aloꢂg with
the MAX629, whiꢅh proviꢁeꢄ the LCD ꢄupply voltage. A
ꢄiꢃilar ꢅirꢅuit with aꢂ aꢁꢁitioꢂal buꢆꢆer ꢅirꢅuit iꢄ ꢄhowꢂ iꢂ
Figure 5b.
Applications Information
Power-Up Sequencing
The MAX5436–MAX5439 have beeꢂ ꢁeꢄigꢂeꢁ ꢄo that
aꢂy oꢆ the ꢄupplieꢄ ꢅaꢂ turꢂ oꢂ ꢆirꢄt without ꢅauꢄiꢂg aꢂy
uꢂwaꢂteꢁ ꢅrowbar ꢅurreꢂtꢄ to ꢆlow. Note that both ꢁigital
aꢂꢁ aꢂalog ꢄupplieꢄ are requireꢁ to power up the wiper
aꢂꢁ uꢂꢅoꢃꢃitteꢁ aꢃpliꢆier (MAX5437/MAX5439 oꢂlyV.
_______________________________________________________________________________________
7
±±5ꢀ, ±28-Tap, Low-Drift Digital Potentiometers
DATA WORD
D7
D6
D5
D4
D3
D2
D1
D0
Doꢂ’t Care
(MSBV
(LSBV
First Bit
Loaded
Last Bit Loaded
Figure 1. Serial Data Format
WIPER POSITION UPDATED
CS
SCLK
DIN
MSB LOADED
D6
LAST BIT LOADED
D7
D5
D4
D3
D2
D1
D0
MSB
LSB
TIME
Figure 2. Serial Interface Timing Diagram
CS
t
CSW
t
CS1
t
CSS
t
CP
t
t
CSH
CH
t
t
CL
CSO
SCLK
t
DS
t
DH
DIN
Figure 3. Detailed Serial-Interface Timing Diagram
8
_______________________________________________________________________________________
±±5ꢀ, ±28-Tap, Low-Drift Digital Potentiometers
+15V
V
S
MAX427
V
O
-15V
R2
L
H
MAX5436–
MAX5439
R1
W
V /V = 1 + R /R
O
S
2
1
Figure 4. Noninverting Amplifier
V
BATT
DC/DC CONVERTER
(SIMPLIFIED)
FIXED ±28V IN
V
OUT
(LCD BIAS)
CONTROL
LCD
PANEL
MAX5436–
MAX5439
±16V TO ±26V CONTRAST ADJUST
MAX629
MICROCONTROLLER/MICROPROCESSOR
Figure 5a. Simplified LCD Contrast Control Circuit
V
BATT
DC/DC CONVERTER
(SIMPLIFIED)
FIXED ±28V IN
V
OUT
(LCD BIAS)
CONTROL
LCD
PANEL
MAX629
MAX5437/
MAX5439
±16V TO ±26V CONTRAST ADJUST
MICROCONTROLLER/MICROPROCESSOR
Figure 5b. Simplified LCD Contrast Control Circuit with Buffer
_______________________________________________________________________________________
9
±±5ꢀ, ±28-Tap, Low-Drift Digital Potentiometers
Functional Diagrams
V
V
CC
CC
H
H
R
R
R
R
128
7
7-BIT
LATCH
7
128
7
7-BIT
LATCH
7
W
DECODE
W
DECODE
7-BIT
SHIFT
7-BIT
SHIFT
REGISTER
REGISTER
DIN
DIN
L
L
MAX5437/
MAX5439
V
V
DD
DD
V
V
SS
SS
MAX5436/
MAX5438
SCLK
CS
SCLK
CS
POR
POR
CLOCK
LOGIC
CLOCK
LOGIC
OUT
GND
GND
IN+ IN-
SHDN
Chip Information
TRANSISTOR COUNT: 2556
PROCESS: BiCMOS
10 ______________________________________________________________________________________
±±5ꢀ, ±28-Tap, Low-Drift Digital Potentiometers
Package Information
(The paꢅcage ꢁrawiꢂg(ꢄV iꢂ thiꢄ ꢁata ꢄheet ꢃay ꢂot reꢆleꢅt the ꢃoꢄt ꢅurreꢂt ꢄpeꢅiꢆiꢅatioꢂꢄ. For the lateꢄt paꢅcage outliꢂe iꢂꢆorꢃatioꢂ,
go to www.maxim-ic.com/packages.V
e
4X S
10
10
INCHES
DIM MIN
MAX
MILLIMETERS
MIN
-
MAX
1.10
0.15
0.95
3.05
3.00
3.05
3.00
5.05
0.70
A
-
0.043
0.006
0.037
0.120
0.118
0.120
0.118
0.199
A1
A2
D1
D2
E1
E2
H
0.002
0.030
0.116
0.114
0.116
0.114
0.187
0.05
0.75
2.95
2.89
2.95
2.89
4.75
0.40
H
0 0.50±0.1
0.6±0.1
L
0.0157 0.0275
0.037 REF
L1
b
0.940 REF
0.007
0.0106
0.177
0.090
0.270
1
1
e
0.0197 BSC
0.500 BSC
0.6±0.1
c
0.0035 0.0078
0.0196 REF
0.200
BOTTOM VIEW
E2
0.498 REF
S
TOP VIEW
D2
α
0°
6°
0°
6°
GAGE PLANE
A2
c
A
E1
b
L
α
A1
D1
L1
FRONT VIEW
SIDE VIEW
PROPRIETARY INFORMATION
TITLE:
PACKAGE OUTLINE, 10L uMAX/uSOP
APPROVAL
DOCUMENT CONTROL NO.
REV.
1
21-0061
I
1
Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are
implied. Maxim reserves the right to change the circuitry and specifications without notice at any time.
Maxim Integrated Products, ±20 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 ____________________ 11
© 2004 Maxiꢃ Iꢂtegrateꢁ Proꢁuꢅtꢄ
Priꢂteꢁ USA
iꢄ a regiꢄtereꢁ traꢁeꢃarc oꢆ Maxiꢃ Iꢂtegrateꢁ Proꢁuꢅtꢄ.
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