|
|
|
부품번호 | MPY100 기능 |
|
|
기능 | MULTIPLIER-DIVIDER | ||
제조업체 | Burr-Brown Corporation | ||
로고 | |||
전체 12 페이지수
www.DataSheet4U.com
®
MPY100
MULTIPLIER-DIVIDER
FEATURES
q LOW COST
q DIFFERENTIAL INPUT
q ACCURACY 100% TESTED AND
GUARANTEED
q NO EXTERNAL TRIMMING REQUIRED
q LOW NOISE: 90µVrms, 10Hz to 10kHz
q HIGHLY RELIABLE ONE-CHIP DESIGN
q DIP OR TO-100 TYPE PACKAGE
q WIDE TEMPERATURE OPERATION
APPLICATIONS
q MULTIPLICATION
q DIVISION
q SQUARING
q SQUARE ROOT
q LINEARIZATION
q POWER COMPUTATION
q ANALOG SIGNAL PROCESSING
q ALGEBRAIC COMPUTATION
q TRUE RMS-TO-DC CONVERSION
DESCRIPTION
The MPY100 multiplier-divider is a low cost preci-
sion device designed for general purpose application.
In addition to four-quadrant multiplication, it also
performs analog square root and division without the
bother of external amplifiers or potentiometers. Laser-
trimmed one-chip design offers the most in highly
reliable operation with guaranteed accuracies.
Because of the internal reference and pretrimmed
accuracies the MPY100 does not have the restrictions
of other low cost multipliers. It is available in both
TO-100 and DIP ceramic packages.
X1
V-I
X2
Y1
V-I
Y2
Multiplier Core
Out
A
Z1
Z2
www.DataSheet4U.com
V-I
Attenuator
High Gain
Output Amplifier
International Airport Industrial Park • Mailing Address: PO Box 11400 • Tucson, AZ 85734 • Street Address: 6730 S. Tucson Blvd. • Tucson, AZ 85706
Tel: (520) 746-1111 • Twx: 910-952-1111 • Cable: BBRCORP • Telex: 066-6491 • FAX: (520) 889-1510 • Immediate Product Info: (800) 548-6132
©1987 Burr-Brown Corporation
PDS-412D
Printed in U.S.A. March, 1995
www.DataSheet4U.com
SIMPLIFIED SCHEMATIC
+VCC
A
Z2 Out
X1
25kΩ
–VCC
X2 Y2
25kΩ 25kΩ
500µA
25kΩ
Y1
3.8kΩ Z1
25kΩ
25kΩ
25kΩ 25kΩ
500µA
VOS
500µA
CONNECTION DIAGRAM
+15VDC
X1
X2
Y1
Y2 VOS
(1)
100kΩ
+VS Z1
Out
–VS Z2
VO
(X1 – X2)(Y1 – Y2)
10
NOTE: (1) Optional component.
–15VDC
DICE INFORMATION
PAD
1
2
3
4
5
6
7
8
9
10
FUNCTION
Y2
VOS
Z2
X2
X1
VO
Z1
+V
–V
Y1
Substrate Bias: –VCC
www.DataSheet4U.com
MPY100 DIE TOPOGRAPHY
MECHANICAL INFORMATION
Die Size
Die Thickness
Min. Pad Size
Backing
MILS (0.001")
107 x 93 ±5
20 ±3
4x4
MILLIMETERS
2.72 x 2.36 ±0.13
0.51 ±0.08
0.10 x 0.10
Gold
®
MPY100
4
4페이지 www.DataSheet4U.com
THEORY OF OPERATION
The MPY100 is a variable transconductance multiplier con-
sisting of three differential voltage-to-current converters, a
multiplier core and an output differential amplifier as illus-
trated in Figure 1.
The basic principle of the transconductance multiplier can
be demonstrated by the differential stage in Figure 2.
For small values of the input voltage, V1, that are much
smaller than VT, the transistor’s thermal voltage, the differ-
ential output voltage, VO, is:
VO = gm RLV1
The transconductance gm of the stage is given by:
gm = IE/VT
and is modulated by the voltage, V2, to give
gm ≈ V2/VTRE
Substituting this into the original equation yields the overall
transfer function
VO = gmRLV1 = V1V2 (RL/VTRE)
which shows the output voltage to be the product of the two
input voltages, V1 and V2.
Variations in IE due to V2 cause a large common-mode
voltage swing in the circuit. The errors associated with this
common-mode voltage can be eliminated by using two
differential stages in parallel and cross-coupling their out-
puts as shown in Figure 3.
+VS
X1
V-I
X2
Y1
V-I
Y2
Stable
Reference
and Bias
+VS
–VS
VO = A
(X1 – X2)(Y1 – Y2)
10
– (Z1 – Z2)
Transfer Function
Multiplier
Core
Out
A
Z1
V-I
Z2
Attenuator
High Gain
Output Amplifier
FIGURE 1. MPY100 Functional Block Diagram.
I1 RL
+VCC
RL I2
– VO +
+ Q1
V1
–
Q2
Q3
+ RE IE
V2
–
wwwF.DIGaUtRaES2h. MBeaueslitctip4DliUiefrf..ecreonmtial Stage as a Transconductance
+
V1
–
+
V2
–
RL
I1
Q1
+–
VO
I2
Q2
I3
Q3
RL
I4
Q4
Q5
RE
Q6
RE
IT
–VCC
FIGURE 3. Cross-Coupled Differential Stages as a Variable-
Transconductance Multiplier.
An analysis of the circuit in Figure 3 shows it to have the
same overall transfer function as before:
VO = V1V2 (RL/VTRE).
For input voltages larger than VT, the voltage-to-current
transfer characteristics of the differential pair Q1, Q2 or Q3
and Q4 are no longer linear. Instead, their collector currents
are related to the applied voltage V1
I1 =
I2
I3
=e
V1
VT
I4
The resultant nonlinearity can be overcome by developing
V1 logarithmically to exactly cancel the exponential rela-
tionship just derived. This is done by diodes D1 and D2 in
Figure 4.
The emitter degeneration resistors, RX and RY, in Figure 4,
provide a linear conversion of the input voltages to differen-
tial current, IX and IY, where:
®
7 MPY100
7페이지 | |||
구 성 | 총 12 페이지수 | ||
다운로드 | [ MPY100.PDF 데이터시트 ] |
당사 플랫폼은 키워드, 제품 이름 또는 부품 번호를 사용하여 검색할 수 있는 |
구매 문의 | 일반 IC 문의 : 샘플 및 소량 구매 ----------------------------------------------------------------------- IGBT, TR 모듈, SCR 및 다이오드 모듈을 포함한 광범위한 전력 반도체를 판매합니다. 전력 반도체 전문업체 상호 : 아이지 인터내셔날 사이트 방문 : [ 홈페이지 ] [ 블로그 1 ] [ 블로그 2 ] |
부품번호 | 상세설명 및 기능 | 제조사 |
MPY100 | Multiplier/Divider | Texas Instruments |
MPY100 | MULTIPLIER-DIVIDER | Burr-Brown Corporation |
DataSheet.kr | 2020 | 연락처 | 링크모음 | 검색 | 사이트맵 |